Chemistry Class 12 Answer Key 2023, Question Paper Set 1, 2, 3
Class 12 Chemistry Answer key 2023- Students can match their answers with the most accurate CBSE Class 12 Chemistry Answer Key 2023 prepared by the expert facilities of Adda247.
Table of Contents
Chemistry Answer key 2023
Class 12 Chemistry Answer Key: The Central Board of Secondary Education is all set to conduct the CBSE Class 12 Chemistry Exam 2023 o n 28 February 2023. We will cover the CBSE Class 12 Chemistry Answer Key 2023 on this page in detail. The chemistry exam will conclude at 01:30 pm, after completion of the examination we will update the CBSE Class 12 Chemistry Answer Key 2023 on this page. The students appearing in the examination can match their answers with the unofficial CBSE Class 12 Chemistry Answer Key 2023 prepared by the expert facilities of Adda247.
Chemistry Class 12 Answer Key 2023
CBSE Class 12 Chemistry Answer Key 2023 given on this page is error-free and all the answers to CBSE Class 12 Chemistry Answer Key 2023 are framed by the faculties who have years of experience in teaching Class 12 Chemistry. Below we have given the highlights of CBSE Class 12 Answer Key Chemistry. The students must check the brief information of CBSE Class 12 Chemistry Answer Key 2023 provided in the table below:
CBSE Class 12 Chemistry Additional Practice Questions 2023
Class 12 Chemistry Exam Answer key Analysis 2023
Here we have given the complete CBSE Class 12 Chemistry Exam Analysis 2023. In CBSE Class 12 Chemistry Answer key & Exam Analysis 2023, we will cover the difficulty level of the exam, out-of-syllabus questions, and mistakes in the question paper. After completion of the CBSE Chemistry Exam, the students must match their responses with the Chemistry Answer Key provided on this page and must check the CBSE Class 12 Chemistry Exam Analysis 2023.
Chemistry Answer Key 2023 Overview
Class 12 Chemistry Answer Key 2023: Exam Pattern
With calculating the scores with the Class 12 Chemistry Answer Key 2023, students must know the Chemistry marking Scheme of Each section. As per the CBSE Class 12 Chemistry sample paper , the CBSE Class 12 Chemistry question paper consists o Five sections. All the sections hold different marks and different types of questions. The board will ask the very short answer type, short answer type, and case-based questions in the CBSE Class 12 Chemistry Examination. Check out the detailed section-wise pattern listed below:
1. Section A consists of 18 Questions carrying 1 mark each [Multiple Choice Questions]
2. Section B consists of 7 questions carrying 2 marks each [Very Short Answer Questions]
3. Section C consists of 5 questions carrying 3 marks each [Short Answer Questions]
4. Section D consists of 2 Questions carrying 4 marks each [Case Based Questons]
5. Section E consists of 2 Questions carrying 5 marks each [Long Answer Questions]
Also Check: Class 12 Chemistry Previous Year Question Papers With Solutions
Chemistry Class 12 Answer Sheet 2023
Here we have provided the Class 12 Chemistry Answer Sheet 2023 for Chemistry question set 2 and 3. A majority of students said that Section A is Multiple Choice questions are a little bit tricky and they found some difficulties while solving these sections. Candidates can cross-check their answers with the Class 12 Chemistry Answer Key 2023 of Section A.
Chemistry Answer Key 2023 Class 12 of Section A
Chemistry class 12 answer key 2023-student’s reaction.
Chemistry Answer Key with Paper Solution 2023
Once the CBSE Class 12 Chemistry Exam 2023 will conclude, here we will provide the detailed 100% accurate CBSE Class 12 Chemistry Answer key 2023 with question paper analysis as soon as possible. Stay connected with us.
Class 12 Most Expected Chemistry Board Paper-Check Now
Class 12 Chemistry Question Papers 2023 Set 2
Cbse class 12 chemistry question papers 2023 set 3, answer key class 12 chemistry set 3.
1, A compound CaCl2.6h2O undergoes complete dissociation in water,The Van’t Hoff Factor ‘i’ is:
a) 9, b) 6, c)3, d) . 4
Answer: c) 3
2. For a Zero order reaction of type A →products, the rate equation may be expressed as:
Answer: Option (a)
3. Which of the following Cu 2+ halide is not known?
Answer: Option (b)
Q4. Which of the following structures represents a-D-glucose?
Answer: (a)
- The compounds [Cr(H2O)lCl3, [Cr(H2O) Cl]C12. H2O and [Cr(H2O)4C12]Cl. 2H2O exhibit:
(a) Linkage isomerism (b) Geometrical isomerism (c) . Ionization isomerism (d) Hydrate isomerism
Answer: (d) Hydrate isomerism
- Which of the following alkenes on acid catalysed hydration gives a tertiary alcohol?
(a) 2-Butene
(b) 2-Methylpropene
(c) Propene
(d) 95 1-Butene
Answer: (b) 2-Methylpropene
- When nitrobenzene is heated with tin and concentrated HCl, the product formed is:
- The reaction of 1-phenyl-2-chloropropane with alcoholic KOH gives mainly:
(a) 1-phenylpropene
(b) 3-phenylpropene
(c) 1-phenylpropene 1-phenylpropan-3-ol
(d) 1-phenylypropan-2-ol
Answer: (a) 1-phenylpropene
- Corrosion of iron is:
(a) a decomposition process a photochemical process (b) a photochemical process (c) an electrochemical process (d) a reduction process
Answer: (a) reduction process
- The number of molecules that react with each other in an elementary reaction is a measure of the:
(a) activation energy of the reaction (b) order of the reaction (c) stoichiometry of the reaction (d) molecularity of the reaction
Answer: (d) molecularity of the reaction
11. On hydrolysis, which of the following carbohydrates gives glucose and galactose?
(a) Sucrose (c) Maltose (b) Lactose (d) Cellulose
Answer: (b) Lactose
12. The deficiency of which of the following vitamins causes ‘Rickets’?
(a) Vitamin A (b) Vitamin D (c) Vitamin B (d) Vitamin C
Answer; (b) Vitamin D
13. Which of the following is an ‘Acetal’?
Answer: (d)
For Questions number 15 to 18, two statements are given – one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). (c) Assertion (A) is true, but Reason (R) is false. (d) Assertion (A) is false, but Reason (R) is true.
- Assertion (A): When NaCl is added to water, a depression in freezing point is observed.
Reason (R): The vapour pressure of solution is increased which causes depression in freezing point.
Answer:(c) Assertion (A) is true, but Reason (R) is false.
- Assertion (A): Monobromination of aniline can be conveniently done by protecting the amino group by acetylation.
Reason (R): Acetylation decreases the activating effect of the amino group.
- Class 12 Chemistry Answer Key 2023
- The magnetic moment of [NiCl4]2-
(a) 1.82 BM (b) 2.82 BM (c) 4.42 BM (d) 5.46 BM (Atomic no : Ni= 28) Answer: (a) 1.82 BM
- Which of the following cell was used in Apollo space programme?
(a) Mercury Cell
(b) Daniel Cell
(c) H2-O2 Fuel cell
(d) Dry Cell
Answer: (c) H2-O2 Fuel cell
- Which one of the following has lowest pKa value?
(a) CH3-COOH
(b) O2N-CH2-COOH
(c) Cl-CH2-COOH
Answer: (b) O2N-CH2-COOH
- Which of the following ions has the electronic configuration 3d6 ?
(a) Ni 3+ (b) Co 3+ (c) Mn 2+ (d) Mn 3+ Answer: (b) CO 3+
- Consider the following standard electrode potential values:
Fe3+ (aq) + e- —> Fe2+ (aq) Eo = + 0.77 V MnO4- (aq) + 8H+ + 5e- —-> Mn2+ (aq) + 4H2O (l) Eo = + 1.51V What is the cell potential for the redox reaction? (a) -2.28 V (b) – 0.74 V (c) + 0.74 V (d) + 2.28 V Answer: (c) +0.74 V
- The following experimental rate data were obtained for a reaction carried out at 25o C:
A(g) + B(g) —-> C(g) + D(g)
- A voltaic cell is made by connecting two half cells represented by half equations below:
Sn2+(aq) + 2e- –>Sn(s)Eo=-0.14 V
Fe3+(aq)+e- –> Fe2+ (aq)Eo=+0.77 V
- Which statement is correct about this voltaic cell?
(a) Fe2+ is oxidised and the voltage of the cell is -0.91 V. (b) Sn is oxidised and the voltage of the cell is 0.91 V. (c) Fe2+ is oxidised and the voltage of the cell is 0.91 V. (d) Sn is oxidised and the voltage of the cell is 0.63 V.
Answer: to be updated
- What are the orders with respect to A(g) and B(g)?
Answer: To be updated
- Which of the following aqueous solution will have highest boiling point?
(a) 1.0 M KCl
(b) 1.0 M K 2 SO4
(c) 2.0 M KCl
(d) 2.0 M K2SO4
- Amides can be converted into amines by the reaction named
(a) Hoffmann degradation
(b) Ammonolysis
(c) Carbylamine
(d) Diazotisation
Answer: (a) Hoffmann degradation
- Which of the following would not be a good choice for reducing nitrobenzene to aniline?
(c) Fe and HCl
(d) Sn and HCl
Answer: (a) LiA l H 4
- Which property of transition metals enables them to behave as catalysts?
(a) High melting point
(b) High ionisation enthalpy
(c) Alloy Formation
(d) Variable oxidation states
Answer: (d) Variable oxidation states
- Which of the following statements is not true about glucose?
(a) It is an aldohexose.
(b) On heating with HI it forms n-hexane.
(c) It is present in pyranose form.
(d) It gives 2,4 DNP test.
Answer: (d) It gives 2,4 DNP test.
- Which of the following alcohols will not undergo oxidation?
(a) Butanol
(b) Butan-2-ol
(c) 2-Methylbutan-2-ol
(d) 3-Methylbutan-2-ol
Answer: ( d) 3-Methylbutan-2-ol
- Four half reactions I to IV are shown below:
- 2Cl- —> Cl2 + 2e-
- 4OH- —-> O2 + 2H2O + 2e-
- Na+ + e- —-> Na
- 2H+ + 2e- —-> H2
Which two of these reactions are most likely to occur when concentrated brine is electrolysed?
(a) I and III
(b) I and IV
(c) II and III
(d) II and IV
For the questions 15 to 18 , two statements are given – one labeled as Assertion (A) and the other labelled as Reason (R ). Select the correct answer to these questions from the codes (a), (b), (c ), and (d) as given below:
(a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). (c) Assertion (A) is true but Reason (R) is false. (d) Assertion (A) is false, but Reason (R) is true.
- Assertion (A) : Vitamin C cannot be stored in our body.
Reason (R) : Vitamin C is fat soluble and is excreted from the body in urine. Answer: (c) Assertion (A) is true but Reason (R) is false
- Assertion (A) : The half life of a reaction is the time in which the concentration of the reactant is reduced to one half of its initial concentration.
Reason (R) : In first order kinetics when concentration of reactant is doubled, its half life is doubled.
- Assertion (A) : Bromination of benzoic acid gives m-bromobenzoic acid.
Reason (R) : Carboxyl group increases the electron density at the meta position. Answer: (a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A).
- Assertion (A): EDTA is a hexadentate ligand.
Reason (R) : EDTA has 2 nitrogen and 4 oxygen donor atoms. Answer: (a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A).
CBSE Class 12 Chemistry Exam Paper Analysis 2023
We surveyed students to find out what they thought of the CBSE Class 12 Chemistry Paper Review 2023. The overall paper was simple to moderate. The questions were straightforward, and nothing was outside of the syllabus. There were some math problems that tested students’ analytical abilities, but everything else was typical in terms of complexity.
Section A, which consisted of MCQs, was the top-scoring component of the exam, according to our subject experts. For your convenience, the answer key for the Class 12 Chemistry test is provided in the sections below.
Class 12 Chemistry Question Papers 2023 Set 1 2 3 4 PDF Download
After Completion of the Exam, here we will provide the CBSE Class 12 Chemistry Question Papers 2023 Pdf. Candidates may download Class 12 Chemistry Question Papers and analyze the Class 12 Chemistry Answer key to calculate their expected scores.
Class 12 Chemistry Answer key 2023 with Exam Paper Analysis
Class 12 Chemistry Answer Key 2023 Previous Year Repeated Questions
Q.1: Arrange the following compounds in the increasing order of their property indicated .
i) Acetaldehyde, Benzaldehyde, Acetophenone, Acetone(Reactivity towards HCN)
Answer. Acetaldehyde<Acetone<Benzaldehyde<Acetophenone
iii) CH3CH2OH, CH3CHO, CH3COOH (Boiling point)
Answer. CH3COOH<CH3CH2OH<CH3CHO
Q.2: In a plot of m against the square root of concentration (C12) for strong and weak electrolytes, the value of limiting molar conductivity of a weak electrolyte cannot be obtained graphically. Suggest a way to obtain this value. Also state the related law, if any.
Yes, we can do it by Kohlrausch’s law.
Kohlrausch’s law: a statement in physical chemistry: the migration of an ion at infinite dilution is dependent on the nature of the solvent and on the potential gradient but not on the other ions present.
Q.3: Write reasons for the following statements :
(i) Benzoic acid does not undergo Friedel-Crafts reaction.
No, benzoic acid does not undergo Friedel Craft reaction because the carboxylic group is deactivating and the Lewis acid catalyst and carboxylic group are bonded.
(ii) Oxidation of aldehydes is easier than that of ketones.
oxidation of aldenyde is easier than ketone due to presence of H-atoms linked to carbonyl group carbon which is absent in ketones.
Q.4: Write reasons for the following:
(i) Ethylamine is soluble in water whereas aniline is insoluble.
Ethylamine when added to water forms intermolecular H−bonds with water. Hence it is soluble in water. But aniline Can form H−bonding with water to a very small extent due to the presence of a large hydrophobic −C6H5 group. Hence aniline is insoluble in water.
(ii) Amino group is o- and p-directing in aromatic electrophilic substitution reactions, but aniline on nitration gives a substantial amount of m-nitroaniline.
Nitration is carried out in an acidic medium. In an acidic medium, aniline is protonated to give anilinium ion (which is meta-directing).
For this reason, aniline on nitration gives a substantial amount of m-nitroaniline.
(iii) Amines behave as nucleophiles.
A nucleophile is a substance that is attracted to, and then attacks, a positive or slightly positive part of another molecule or ion. All amines contain an active lone pair of electrons on the very electronegative nitrogen atom. It is these electrons that are attracted to positive parts of other molecules or ions.
b) How will you carry out the following conversions :
i) Nitrobenzene to Aniline
Nitrobenzene is reduced to aniline by Sn and concentrated HCl. Instead of Sn, Zn or Fe also can be used. Aniline salt is given from this reaction. Then aqueous NaOH is added to the aniline salt to get released aniline. This reaction is called nitrobenzene reduction.
- Benzene is a clear, colourless, highly flammable and volatile, liquid compound.
- Aniline is a yellowish to brownish oily liquid with a musty fishy odour organic compound.
ii) Ethanamide to Methanamine
React ethanamine with nitrous acid to form an azo compound, which further reacts with water to form ethanol, which on oxidising gives ethanoic acid. After treating with an excess of ammonia the ethanoic acid becomes ethanamide, which on further reacting with Bomine and a strong base (Hoffmann bromamide degradation reaction) to form methenamine.
iii) Ethanenitrile to Ethanamine
it’s simple reduction of nitriles with lithium aluminium hydride or catalytic hydrogenation produce primary amines. the reaction is
CH3C≡N + H2/Ni OR LiAlH4 → CH3CH2NH2
Q.5(a)(i) Write the electronic configuration of d5 on the basis of crystal field splitting theory if Δ0 < P.
When Δo < P, it is weak field and high spin situation’. As a result one electron entered in eg orbital and 3 electrons in t2g.
(ii) [Fe(CN)6]³- is weakly paramagnetic whereas [Fe(CN)6]4- is diamagnetic. Give reason to support this statement [Atomic no. Fe = 26].
Since CN − is a strong field ligand, it causes the pairing of unpaired electrons. Therefore, there is only one unpaired electron left in the d -orbital.
On the other hand, H 2 O is a weak field ligand. Therefore, it cannot cause the pairing of electrons. This means that the number of unpaired electrons is 5.
(iii) Write the number of ions produced from the complex [Co(NH3)6]C12 in solution.
The given complex can be written as [Co(NH3)6]Cl2. Thus, [Co(NH3)6]+ along with two Cl− ions are produced.
Q.(b)(i) Calculate the spin only magnetic moment of the complex [CoF613-. (Atomic no. of Co = 2 7)
Given ion is M 2+ with the atomic no. 27.
(iii) Which out of the two complexes is more stable and why ?
[Fe(H20)6]3+, [Fe(C204)3]3–
[Fe(C204)3]3– is more stable out of two complexes. The central metal ion is Fe3+ and C2O4 2– is negative bi-dentate ligand which forms more stable complex than neutral or monodentate ligand.
Q.6 (i) Which ion amongst the following is colourless and why?
Ti4+, Cr3+, V3+
(Atomic number of Ti = 22, Cr = 24, V = 23)
Ti is colourless because it is having no unpaired e − e- for excitation to higher energy level and it is colourless.
(ii) Why is Mn²+ much more resistant than Fe²+ towards oxidation?
Mn2+ is much more resistant than Fe2+ towards oxidationAs Mn2+ has stable configuration hence it is resistant towards oxidation. while in Fe2+ electronic configuration is 3d6 so it can lose one electron to give stable configuration 3d5.
(iii) Highest oxidation state of a metal is shown in its oxide or fluoride only. Justify the statement.
The highest oxidation state of a metal is exhibited in its oxide or fluoride only. This is because fluorine (F) and oxygen (O)are the most electronegative elements and the highest oxidation state shown by any transition element is +8.
Q.7 A compound ‘A’ (C2H4O) on oxidation gives ‘B’ (C2H4O2). ‘A’ undergoes an Iodoform reaction to give yellow precipitate and reacts with HCN to form the compound ‘C’. ‘C’ on hydrolysis gives 2-hydroxypropanoic acid. Identify the compounds ‘A’, ‘B’ and ‘C’. Write down equations for the reactions involved.
Q.9(a) Write equations involved in the following reactions :
(i) Ethanamine reacts with acetyl chloride.
(ii) Aniline reacts with bromine water at room temperature.
(iii) Aniline reacts with chloroform and ethanolic potassium hydroxide.
When aniline reacts with chloroform and alcoholic K O H it gives an offensive smelling liquid i.e., phenyl isocyanide as product. It is called as isocyanide test. It is given by aliphatic and aromatic primary amines.
Q.9 (b) (i) Write the IUPAC name for the following organic compound: (CH3CH2)2NCH3
( C H 3 C H 2 ) 2 N C H 3 it is a tertiary amine, and the parent chain is ethanamine. IUPAC name is N – Ethyl – N- methyl ethanamine.
(ii) Write the equations for the following:
(I) Gabriel phthalimide synthesis
Gabriel Phthalimide Synthesis Mechanism has 3 steps. The Synthesis is used to get primary amines from primary alkyl halides and is named after the German scientist Siegmund Gabriel.
The reaction has been generalized for applications in the alkylation of sulfonamides and imides & their deprotection in order to obtain amines. Alkylation of ammonia is quite inefficient, therefore it is substituted with phthalimide anion in the Gabriel synthesis.
(II) Hoffmann bromamide degradation
When an amide is treated with bromine in an aqueous or ethanolic solution of sodium hydroxide, degradation of amide takes place leading to the formation of primary amine. This reaction involving degradation of amide and is popularly known as Hoffmann bromamide degradation reaction. The primary amine thus formed contains one carbon less than the number of carbon atoms in that amide.
RCONH 2 +Br 2 + 4NaOH
R-NH 2 + Na 2 CO 3 + 2NaBr + 2H 2 O
Q.11(a) i) Silver atom has completely filled d-orbitals in its ground state, it is still considered to be a transition element. Justify the statement.
Silver (Ag) belongs to group 11 of d-block and its ground state electronic configuration is 4d10 5s1. It shows an oxidation state of +2 in its compounds like AgO and AgF2 in which its electronic configuration is d9 so it is a transition element.
ii) Why are E° values of Mn and Zn more negative than expected?
Negative E° values of Mn2+ and Zn2+ are because of the stabilities of half-filled (3d5 : Mn2+)and fullyfilled (3d10 : Zn2+) configuration respectively. Ni2+ ion has higher E° value due to highest negative enthalpy of hydration.
iii) Why do transition metals form alloys?
Transition metals have very similar atomic sizes. One metal can easily replace the other metal from its lattice to form solid solution (alloy). Transition metals are miscible with one another in the molten state. The molten state solution of two or more transition metals on cooling forms alloy.
Related Post:
- CBSE Class 12 Answer Key (All Subjects) 2023
- CBSE Class 10 Answer Key (All Subjects)
Sharing is caring!
When will CBSE class 12 Chemistry Exam takes place?
The CBSE Chemistry Examination is going to take place on 28 February 2023.
How many Sections are there in the class 12 Chemistry Question paper?
Class 12 Chemistry Question paper has 5 sections with 35 questions for 70 marks.
What is the totals marks of class 12 Chemistry Question paper?
The totals marks of the class 12 Chemistry Question paper is 70 marks
Join the Conversation
Keep it up the good work
Great article, the information provided to us. Thank you
Sir we need for physics
nice solutions for class 12 chemistry
Your email address will not be published. Required fields are marked *
Save my name, email, and website in this browser for the next time I comment.
Leave a comment
CBSE Board Exam 2023
- CBSE Class 10 Answer Key All Subjects
- CBSE Class 12 Answer key All Subjects
- CBSE Practice Papers Answer key All Subjects
- CBSE 10th & 12th Datesheets
- CBSE Exam Guidelines
- CBSE 12th Exam Pattern
- CBSE 10th Exam Pattern
- CBSE Previous Year Papers
- CBSE Sample Papers
- JEE Main 2023
- JEE Main Syllabus 2023
- NEET 2023
- NEET State wise Cut off
- NEET Rank Predictor
- NEET OMR Sheet
- NEET College Predictor
Trending News
- India Post GDS Result
- Telangana GDS Results 2023
Recent Posts
- Carbonic Acid Formula, Structure, Strength, Preparation
- NDA Eligibility and Age Limit, Check Educational Qualifications
- FTII JET Admit Card 2023 Out, Hall Ticket Download Link
- NDA Preparation Tips 2023
- CBSE Class 10 IT Answer Key 2023 With Exam Analysis
- CBSE Class 10 Computer Answer key for Set 1, 2, 3, 4
- Maillard Reaction Temperature, Mechanism, Examples
- CBSE Class 12 Physical Education Answer key for Set 1,2,3,4
- NDA Exam 2023 Exam Date, Eligibility, Exam Pattern
- Ammonia Formula, Structure, Symbol
- Socialism vs Communism
- NIFT Result 2023 OUT, Check link, Download Score Card
- IT Information Technology Sample Paper Class 10 2023 with Solutions
- NDA Syllabus 2023 for Maths and GAT Syllabus PDF Download
- Khelo India Youth Games 2023 Medal Tally, Schedule ,Winners List
- MAH MCA CET 2023, Exam dates, Exam Pattern, Preparation Tips
- Sample Paper of Physical Education Class 12 with Solution 2023
- SST Sample Paper Class 10 2023 with Solutions and PDF
- CBSE Class 10 Answer Key 2023, All Subjects [Updated]
Adda247 Youtube Channel
IMPORTANT EXAMS
Ncert solutions.
- NCERT Class 12
- NCERT Class 11
- NCERT Class 10
- NCERT Class 9
NCERT Books
School syllabus.
- CBSE Class 12
- CBSE Class 11
- CBSE Class 10
- CBSE Class 9
- CBSE Result
- CBSE Term 2 Date Sheet 2023
Our Other Websites
- Teachers Adda
- Career Power
- Bankers Adda
- Adda Malayalam
- Adda Punjab
- Current Affairs
- Defence Adda
- Adda Bengali
- Engineers Adda
- Adda Marathi
- Adda School
Get all your queries solved in one single place. We at Adda247 school strive each day to provide you the best material across the online education industry. We consider your struggle as our motivation to work each day.
Download Adda247 App
Follow us on
- Responsible Disclosure Program
- Cancellation & Refunds
- Terms & Conditions
- Privacy Policy
CBSE 12th Chemistry Answer Key 2023 Set 1 2 3 4 Question Paper
CBSE 12th Chemistry Answer Key 2023 Set 1 2 3 4 Question Paper and many other details are in this article. The Central Board of Secondary Education ( CBS E ) is the most popular board of education in India . Every year , lakh s of students occur in the CBS E 12 th Chemistry exams . The CBS E 12 th Chemistry Answer Key is one of the most awaited documents . The board releases it soon after the completion of the exams . The CBS E 12 th Chemistry answer key helps the students to gauge their performance in the exams and check their probable scores .
CBSE 12th Chemistry Answer Key 2023
Answer Key for CBS E 12 th Chemistry is the set of answers students can use to check their answers after completing the paper . It contains all the right answers to the questions asked in the paper . It is an essential tool for students to evaluate their performance and get a better understanding of the topics they have studied . The answer key consists of the accurate answers to the multiple choice questions , numerical problems , and long answer questions that are asked in the paper . The answers are provided in the exact series as they appear in the paper .
It is important to go through the answer key thoroughly to ensure that all the answers are correct . The answer key helps students identify the areas in which they need to improve . It also helps them understand the structure and pattern of the exam . It is helpful for students to use the answer key to check their responses and understand complex concepts better . The CBS E 12 th Chemistry answer key 20 23 is predicted to be released soon after the completion of the examination . It will be public on the authorised website of CBS E and can be downloaded as a PDF file .
CBSE 12th Chemistry Set 1 2 3 4 Question Paper 2023
The question Paper is designed to assess the student’s understanding and knowledge of the subject . The paper comprises four sets, namely Set 1 , Set 2 , Set 3 and Set 4 . The release of the 12 th Chemistry Set 1 2 3 4 Question Paper can be done anytime by the Central Board of Secondary Education . The question paper will include questions from all the topics studied by the students in the current academic year and will be divided into sections such as theory , practical and project work .
These question papers will be prepared in accordance with the syll abus prescribed by the CBS E board and will be designed to assess the student’s understanding and application of the concepts taught in the subject . The question paper will include multiple – choice questions , fill-in-the-blanks , diagrams and other such questions to evaluate the student ’ s knowledge and application of the concepts . The board will also release the answer key to the question paper and the question paper to evaluate the answers .
CBSE 12th Chemistry Answer Key Release Date 2023
The board usually releases the answer key within a month after the completion of the exams . The Chemistry answer key for 20 23 is anticipated to be released sometime in March . However , the exact date is yet to be announced by the board . The answer key will be available on the official website of CBS E . The students can download the solution key and match their solutions with the correct ones .
This will help students to know their scores and prepare for further entrance procedures . The board may also release the question paper along with the answer key . The answer key is a crucial document for the students as it helps them to have an idea about their performance in the exams . Therefore , the students should keep an eye on the official website of CBS E for the latest updates regarding the 12 th Chemistry answer key release date for the year 20 23 .
Steps to Check CBSE 12th Chemistry Answer Key 2023
Step s to check CBS E 12 th Chemistry Answer Key 20 23 :
- Visit the official website of the Central Board of Secondary Education ( CBS E ), i . e . www . cb se . nic . in .
- Click on the e x amination tab, which you can find on the homepage .
- Now , click the ‘ Answer Key ’ tab and select the ‘CBSE 12th Chemistry Answer Key 2023’ link.
- The solution key will be revealed on the screen .
- Download the answer key and take a print out of it for prospective consideration .
Compare your solutions with the answer key and calculate your probable scores . The board will release the exam result after the evaluation process is complete .
- Ruk Jana Nahi Result 2023 MPSOS
- Bihar Board exam date 2023
- JKBOSE Time Table 2023
- HBSE Admit Card 2023
- BSEB 12th Admit card 2023
If you have any issues regarding the 12th Answer key, comment in the section below and keep visiting our website for the latest updates on exams.
Leave a Comment Cancel reply
Save my name, email, and website in this browser for the next time I comment.
- Sample Papers
- Question Papers
- Sample Paper
- Question Paper
- NCERT Solutions
- NCERT Books
- NCERT Audio Books
- NCERT Exempler
- Solved Sample Papers
- Writing Skill Format
- School Admission
- Careers Opportunities
- Courses & Career
- Courses after 12th
- RD Sharma Solutions
- HC Verma Solutions
- Teaching Material
- Classes Wise Resources
CBSE Class 12 Chemistry Answer Key 2022 for Term 2 (Code 043) – Set 1, 2, 3, 4 Download PDF
- MAHE (MET) Applications 2023 - Apply Now!
- VITEEE 2023 B-TECH Application - Apply Now!
- UPES Dehradun Applications 2023 - Apply Now!
- LPU (Ranked #1) 2023 Application - Apply Now!
CBSE Class 12 Chemistry Answer Key 2022 for Term 2 is available after the exam. Students can check the CBSE Class 12 Term 2 Answer Key 2022 for Chemistry (Code 043) after exam. The answer key of Class 12 Chemistry exam contains correct answers of all questions asked in the CBSE board exam 2022 term 2 for Chemistry subject. Students can download the pdf of CBSE Class 12 Chemistry paper solution for term 2 here and know questions, answers, and solutions. Where available, you can also watch the video solutions.
CBSE Class 12 Chemistry Answer Key 2022 for Term 2
Here are the Class 12 Chemistry Term 2 Answer Key 2022:
You can also see the complete solution for class 12 Chemistry exam here itself.
Unofficial CBSE Class 12 Chemistry Answer Key 2022 for Term 2
The coaching institutes and subject experts release the unofficial CBSE class 12 Chemistry answer key for Term 2 after the exam is over. These unofficial answer keys are released as video solutions. The students can use these answer keys to calculate the marks.
How to Use CBSE Class 12 Chemistry Answer Key 2022 for Term 2?
Given below are the steps to calculate the scores using CBSE Class 12 Chemistry Answer Key 2022 for Term 2.
1st step: Check the answer keys given above on this page.
2nd step: Then, open them and check the answers to each question present.
3rd step: After this, write down the number of correct and incorrect answers.
4th step: Next, use the official marking scheme to calculate the marks.
Importance of CBSE Class 12 Chemistry Answer Key 2022 for Term 2
The answer key of CBSE Class 12 Chemistry Answer Key 2022 for Term 2 is beneficial for the following purposes:
- To know the correct answers: By having a look at the CBSE Class 12 Chemistry Answer Key 2022 for Term 2, the students will get to know the correct answers asked in the exam.
- For the calculation of marks: After checking the answer key, the students can get a rough idea about their marks. Once the answers have been cross-checked, evaluate the marks by applying the official marking scheme.
- Detailed analysis of the answers: After checking some of the video solutions provided above, the students will get to know the detailed explanation of the answers. They can recall whether they used the same method to derive any answers or not.
CBSE Class 12 Chemistry Answer Key 2022 for Term 2 Overview
Faqs on cbse class 12 chemistry answer key 2022 for term 2.
Ques. Where can I check CBSE Class 12 Chemistry Answer Key 2022 for Term 2? Ans The link so the answer keys have been provided on this page.
Ques. Who prepares the unofficial CBSE Class 12 Chemistry Answer Key 2022 for Term 2? Ans. The subject experts and coaching institutes have released the unofficial answer keys for CBSE class 12 Chemistry Term 2 exam.
Ques. How can I calculate the marks using CBSE Class 12 Chemistry Answer Key 2022 for Term 2? Ans. Download the answer key first. Then, check the answers displayed by the educators and after this, use the official marking scheme to calculate the scores.
CBSE Class 9 Syllabus 2022-23 French – Term 1, Term 2
Cbse class 9 syllabus 2022-23 thai – term 1, term 2, related posts.
RBSE 12th Punjabi Sahitya Model Paper 2023 (PDF) – Rajasthan Board Class 12 Sample Paper Punjabi Sahitya
Rbse 12th public administration model paper 2023 (pdf) – rajasthan board class 12 sample paper public administration, rbse 12th rajasthani sahitya model paper 2023 (pdf) – rajasthan board class 12 sample paper rajasthani sahitya, rbse 12th gujarati sahitya model paper 2023 (pdf) – rajasthan board class 12 sample paper gujarati sahitya, leave a reply cancel reply, cbse board quick links.
- CBSE Date Sheet
- CBSE Result
- CBSE Syllabus
- CBSE Sample Papers
- CBSE Question Papers
- CBSE Practice Papers
- CBSE Mock Tests
Class Wise Study Material
Registration open, board exams 2023.
- Revision Notes
- State Board
Study Material
- Class Notes
- Courses After Class 12th
- JEE Main 2023
- Fashion & Design
- Terms of Use
- Privacy Policy
© 2019 aglasem.com
- School & Boards College Admission Govt Jobs Alert & Prep Exams Current Affairs General Knowledge Careers Videos Education News Quiz & Mock Tests Ebooks Results हिन्दी Jagran TV Jagran Play View All Categories
- New Distance MBA
- SRM University
- Current Affairs
- Web Stories
- State Boards ICSE Board UP Board Bihar Board Rajasthan Board Maharashtra Board MP Board
- CBSE Class 12
CBSE Class 12 Chemistry Answer Key 2023 and Question Papers, Download PDF
CBSE Class 12 Chemistry Answer Key 2023: The Class 12 Chemistry annual examinations of the CBSE Board were held today, February 28, 2023. Students have a lot to discuss after the exam and Chemistry is a particularly tricky subject. Check the CBSE Class 12 Chemistry question paper and answer key in pdf format here.
CBSE Class 12 Chemistry Answer Key 2023 : The Central Board of Secondary Examination (CBSE) Class 12 examinations have begun, and the highly important science stream exam of Chemistry was conducted today, February 28, 2023, from 10:30 AM to 1:30 PM. Millions of students gave the exam, and all had varied experiences. Some found it tough, others too simple. One long-running after-exam tradition among students is discussing the question papers. It’s not a recommended practice, but quite irresistible. However, going over answers after exams can also reveal mistakes in questions. Students can know how and what to dispute in case their score suffers due to an external mistake. But it's important to know the SET 1, 2, 3 and 4 CBSE Class 12 answer key for that. The board doesn’t release the CBSE Class 12 Chemistry exam 2023 answer key this soon. However, you can check the but correct answer key for the CBSE class 12 Chemistry paper 2023 here. It’ll help you get a faint idea of your exam score. You can refer to the CBSE class 12 Chemistry paper 2023 answer key in this article.
- CBSE Class 12 Chemistry Paper Analysis 2023
- CBSE Class 12 Chemistry Question Paper 2023
CBSE Class 12 Chemistry Paper Answer Key 2023
CBSE hasn’t released the 2023 class 12 Chemistry question paper or answer key yet. However, you can check out the genuine question paper and CBSE Class 12 Chemistry answer key 2023 here. The official consensus of the paper was moderately difficult.
CBSE Class 12 Chemistry 2023 Answer Key
- Which one of the following has lowest pKa value?
(a) CH 3 -COOH
(b) O 2 N-CH 2 -COOH
(c) Cl-CH 2 -COOH
Answer: (b) O 2 N-CH 2 -COOH
- Which of the following cell was used in Apollo space programme?
(a) Mercury Cell
(b) Daniel Cell
(c) H 2 -O 2 Fuel cell
(d) Dry Cell
Answer: (c) H 2 -O 2 Fuel cell
- Consider the following standard electrode potential values:
Fe 3+ (aq) + e - —> Fe 2+ (aq) E o = + 0.77 V
MnO 4- (aq) + 8H + + 5e - —-> Mn 2+ (aq) + 4H 2 O (l) E o = + 1.51V
What is the cell potential for the redox reaction?
(a) -2.28 V
(b) - 0.74 V
(c) + 0.74 V
(d) + 2.28 V
Answer: (c) +0.74 V
- The following experimental rate data were obtained for a reaction carried out at 25o C:
A(g) + B(g) —-> C(g) + D(g)
What are the orders with respect to A(g) and B(g)?
Answer: To be updated
- The magnetic moment of [NiCl4]2-
(a) 1.82 BM
(b) 2.82 BM
(c) 4.42 BM
(d) 5.46 BM
(Atomic no : Ni= 28)
Answer: (a) 1.82 BM
- Which of the following ions has the electronic configuration 3d6 ?
Answer: (b) CO 3+
- Which of the following aqueous solution will have highest boiling point?
(a) 1.0 M KCl
(b) 1.0 M K 2 SO 4
(c) 2.0 M KCl
(d) 2.0 M K2SO4
Answer: to be updated
- A voltaic cell is made by connecting two half cells represented by half equations below:
Sn 2+ (aq) + 2e - -->Sn (s) E o =-0.14 V
Fe 3+ (aq) +e - --> Fe 2+ (aq) E o =+0.77 V
Which statement is correct about this voltaic cell?
(a) Fe 2+ is oxidised and the voltage of the cell is -0.91 V.
(b) Sn is oxidised and the voltage of the cell is 0.91 V.
(c) Fe2 + is oxidised and the voltage of the cell is 0.91 V.
(d) Sn is oxidised and the voltage of the cell is 0.63 V.
- Amides can be converted into amines by the reaction named
(a) Hoffmann degradation
(b) Ammonolysis
(c) Carbylamine
(d) Diazotisation
Answer: (a) Hoffmann degradation
- Which of the following statements is not true about glucose?
(a) It is an aldohexose.
(b) On heating with HI it forms n-hexane.
(c) It is present in pyranose form.
(d) It gives 2,4 DNP test.
Answer: (d) It gives 2,4 DNP test.
- Which of the following alcohols will not undergo oxidation?
(a) Butanol
(b) Butan-2-ol
(c) 2-Methylbutan-2-ol
(d) 3-Methylbutan-2-ol
Answer: ( d) 3-Methylbutan-2-ol
12. Four half reactions I to IV are shown below:
- 2Cl - —> Cl 2 + 2e -
- 4OH - —-> O 2 + 2H 2 O + 2e -
- Na + + e - —-> Na
- 2H + + 2e - —-> H 2
Which two of these reactions are most likely to occur when concentrated brine is electrolysed?
(a) I and III
(b) I and IV
(c) II and III
(d) II and IV
Answer:
13. Which property of transition metals enables them to behave as catalysts?
(a) High melting point
(b) High ionisation enthalpy
(c) Alloy Formation
(d) Variable oxidation states
Answer: (d) Variable oxidation states
14. Which of the following would not be a good choice for reducing nitrobenzene to aniline?
(a) LiAlH 4
(b) H 2 /Ni
(c) Fe and HCl
(d) Sn and HCl
Answer: (a) LiA l H 4
For the questions 15 to 18 , two statements are given - one labeled as Assertion (A) and the other labelled as Reason (R ). Select the correct answer to these questions from the codes (a), (b), (c ), and (d) as given below:
(a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is true but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Answer: (a) Both Assertion (A) and Reason (R ) are true and (R) is the correct explanation of the Assertion (A).
- Assertion (A) : Vitamin C cannot be stored in our body.
Reason (R) : Vitamin C is fat soluble and is excreted from the body in urine.
Answer: (c) Assertion (A) is true but Reason (R) is false
- Assertion (A) : The half life of a reaction is the time in which the concentration of the reactant is reduced to one half of its initial concentration.
Reason (R) : In first order kinetics when concentration of reactant is doubled, its half life is doubled.
- Assertion (A) : Bromination of benzoic acid gives m-bromobenzoic acid.
Reason (R) : Carboxyl group increases the electron density at the meta position.
- Assertion (A): EDTA is a hexadentate ligand.
Reason (R) : EDTA has 2 nitrogen and 4 oxygen donor atoms.
- (a) Which of the following species cannot act as a ligand? Give reason.
OH-, NH + 4 , CH3NH2, H20
Answer: NH4+ ion cannot act as a ligand as it does not possess any lone pair of electrons which it can donate to central metal ion. Therefore, it does not form complexes.
(b) The complex [Co(NH3)5(NO2)]Cl2 is red in colour. Give IUPAC name of its linkage isomer.
Answer: The complex [Co(NH3)5(NO2)]Cl2 is obtained in red colour when the nitrite ligand is bound through oxygen.
IUPAC name of its linkage isomer is - Pentamminenitrocobalt(III) chloride.
- For the pair phenol and cyclohexanol, answer the following:
(a) Why is phenol more acidic than cyclohexanol?
(b) Give one chemical test to distinguish between the two.
(a) Phenol is more acidic than cyclohexanol because the phenoxide ion is more stable than the alkoxide ion. Phenoxide ion is stabilised by resonance whereas no resonance structures are possible for alkoxide ion of cyclohexanol.
(b) Bromine water test can be used to distinguish between phenol and cyclohexanol. Phenol decolorises bromine water and gives white ppt. of 2, 4, 6- tribromophenol. But cyclohexanol does not give this test.
- (a) (i) Draw the zwitter ion structure for sulphanilic acid.
(ii) How can the activating effect of -NH2 group in aniline be controlled?
(a) (i) Zwitter ion structure for sulphanilic acid:
(ii) The activating effect of −NH2 group can be controlled by acetylation of −NH2 group.
Also Read: CBSE Chemistry Class 12 Syllabus 2022-2023
Also Read: CBSE Class 12th Chemistry Notes
Also Read: CBSE Class 12 Chemistry Sample Paper 2022-23
Also Read: CBSE Class 12 Chemistry Deleted Syllabus 2022-23
Also Read: CBSE Class 12 Chemistry Practice Paper 2023
Other Important Links:-
Important links for cbse class 12th chemistry exam.
- CBSE Class 12 Chemistry Question Paper 2023 PDF Download
- CBSE Class 12 Chemistry Answer Key 2023
- CBSE Class 12 Chemistry Paper Exam Review 2023
What are the students' reactions to the CBSE class 12 Chemistry question paper 2023?
Is official cbse class 12 chemistry question paper 2023 released , how to download cbse class 12 chemistry question paper 2023 pdf , related categories.
Related Stories
- CBSE Class 10 Syllabus for Board Exam 2023 (All Subjects): Download PDF with Important Resources for Preparation
- CBSE Board Exam 2023: Class 10 English Analytical Paragraph Writing Format & Tips for Full Marks
- CBSE Class 10 Maths Study Material for Board Exam 2023| Complete Guide for Scoring High in Exam
- CBSE Class 10 Maths Syllabus for Board Exam 2023 (PDF)
- CBSE Class 9 Syllabus 2022-2023 (PDF) - Download Subject-Wise Syllabus Here!
- CBSE Class 9 Science Syllabus 2022-23 PDF: Check Course Content & Details of Annual Assessment
Latest News
- Brain Teasers: These brain teasers are really interesting! Try them today! 1 hour ago
- Math riddles with answers: Math is an incredibly tough subject, but it can be incredibly fun too! These math riddles are a proof! 1 hour ago
- SVB Crisis: जानें सिलिकॉन वैली बैंक संकट कैसे प्रभावित करेगा इंडियन स्टार्टअप इकोसिस्टम को, पढ़ें यहां 1 hour ago
- Top 5 Hindi Current Affairs of the Day: 13 मार्च 2023 – सिलिकॉन वैली बैंक, बेस्ट ओरिजिनल सॉन्ग, गिनीज बुक वर्ल्ड रिकॉर्ड 1 hour ago
- CBSE Class 10 Social Science Map Work for Board Exam 2023 (PDF) with Important Resources for Last Minute Revision 2 hrs ago
- Optical Illusion: This crab is obstinate! He doesn't wish to come out. Can you find the hidden crab? 3 hrs ago
- CTC और In-Hand सैलरी में क्या होता है अंतर, जानें 3 hrs ago
- ICSE Class 10 Environmental Science Syllabus 2022-23: Download Class 10th Environmental Science Syllabus PDF 3 hrs ago
- AEES PRT Admit Card 2023 OUT: Download at aees.gov.in 5 hrs ago
- What are bio-computers? How can they help us dive deep into the human brain? 5 hrs ago
- BOI PO Admit Card 2023 Released: Download at PGDBF Officer Call Letter at bankofindia.co.in 5 hrs ago
- Current Affairs Daily Hindi Quiz: 13 March 2023 - 95वें ऑस्कर अवॉर्ड, सिलिकॉन वैली बैंक 5 hrs ago
- Current Affairs Hindi One Liners: 13 मार्च 2023 - ऑस्कर अवार्ड्स 2023, बेस्ट ओरिजिनल सॉन्ग, गिनीज बुक वर्ल्ड रिकॉर्ड 5 hrs ago
- ISC Class 12 Political Science Previous Year Question Papers (2017 to 2020) Download PDF 5 hrs ago
- AFCAT Result 2023 OUT at afcat.cdac.in: Check Direct Link to Download AFCAT 1 Marks and Cut Off 5 hrs ago
- Optical Illusion: You have the sharpest pair of eyes if you can spot a bird in the junkyard in 4 seconds 6 hrs ago
- BOB Recruitment 2023 Registration Ends Tomorrow: Apply Online, Direct Link to Apply & Other Details Here 6 hrs ago
- Personality Test: Name Starts With O? First Letter of Your Name Reveals Your Hidden Personality and Career 6 hrs ago
- ISC Political Science Specimen Paper 2023 Class 12: CISCE Political Science Sample Paper, Download PDF 6 hrs ago
- UPSC Combined Geo-Scientist Syllabus 2023: Check Prelims & Mains Subjects & Exam Pattern 6 hrs ago
Result Updates
- TS Result 2022 (SSC - Declared): Click here to Check Sep 1, 2022
- Odisha Board 10th Result 2022 (Declared): Click here to Check Aug 8, 2022
- Odisha board 12th Result 2022 (Commerce & Science - Declared): Click here to Check Aug 8, 2022
- Odisha board 12th Commerce and Arts Results 2022 (Arts - Declared): Click here to check Aug 8, 2022
For more results, click here
IMAGES
VIDEO
COMMENTS
Class 12 Chemistry Answer Key: The Central Board of Secondary Education is all set to conduct the CBSE Class 12 Chemistry Exam 2023 on 28
AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new features. © 2023 Google LLC.
Answer key of Class 12th Chemistry paper | CBSE 2022-23 | Set 3 | Question paper code 56/5/3.Maths Sample Paper Solution
ALLEN's Subject Matter Experts have prepared PDF Solutions & Paper Analysis Videos for students appearing in XII CBSE TERM-2 Exams.
Join here : https://bit.ly/37Q0dCJCUET 2022 Selection Course About the Course -- Classes will start on 8th May- Subject Covered : PCMB +
The answer key consists of the accurate answers to the multiple choice questions, numerical problems, and long answer questions that are asked
The answer key of Class 12 Chemistry exam contains correct answers of all questions asked in the CBSE board exam 2022 term 2 for Chemistry
Class 12 Chemistry Exam Today's Term 2 Question Paper & Answer Key 2023. CBSE Class 12th Term 2, Chemistry question paper and answer key.
Class 12 Chemistry Answer Key 2023: CBSE Chemistry Class 12 Exam ... Reaction of 1-phenyl-2-chloropropane with alcoholic KOH gives mainly:.
But it's important to know the SET 1, 2, 3 and 4 CBSE Class 12 answer key for that. The board doesn't release the CBSE Class 12 Chemistry exam