CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A

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Read and download CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A designed as per the latest question paper pattern and Class 12 examination guidelines issued by CBSE, NCERT and KVS. The past year Question Papers for Class 12 Chemistry have been provided with solutions which will help students to assess their performance and find out topics in Chemistry Class 12 which they need to improve to get better marks in Class 12 exams. After solving these last year papers also refer to solved Sample Papers for Class 12 Chemistry available on our website to build strong understanding of the subject

Chemistry Question Paper Class 12

Students can refer to the below Class 12 Chemistry Question Paper designed to help students understand the pattern of questions that will be asked in Class 12 exams. Please download CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A

Chemistry Class 12 Question Paper

SECTION A
Read the given passage and answer the questions number 1 to 5 that follow :
 
The substitution reaction of alkyl halide mainly occurs by SN1 or SN2 mechanism. Whatever mechanism alkyl halides follow for the substitution reaction to occur, the polarity of the carbon halogen bond is responsible for these substitution reactions. The rate of SN1 reactions are governed by the stability of carbocation whereas for SN2 reactions steric factor is the deciding factor. If the starting material is a chiral compound, we may end up with an inverted product or racemic mixture depending upon the type of mechanism followed by alkyl halide. Cleavage of ethers with HI is also governed by steric factor and stability of carbocation, which indicates that in organic chemistry, these two major factors help us in deciding the kind of product formed.
 
1. Predict the stereochemistry of the product formed if an optically active alkyl halide undergoes substitution reaction by SN1 mechanism.
 
2. Name the instrument used for measuring the angle by which the plane polarised light is rotated.
 
3. Predict the major product formed when 2-Bromopentane reacts with alcoholic KOH.
 
4. Give one use of CHI3.
 
5. Write the structures of the products formed when anisole is treated with HI.
 
Questions number 6 to 10 are one word answers :

6. Identify which liquid will have a higher vapour pressure at 900C if the boiling points of two liquids A and B are 1400C and 1800C, respectively.
 
7. Out of zinc and tin, whose coating is better to protect iron objects ?
 
8. Will the rate constant of the reaction depend upon T if the Eact (activation energy) of the reaction is zero ?
 
9. Give the structure of the monomer of PVC.
 
10. Which structural unit present in a detergent makes it non-biodegradable ?
 
Questions number 11 to 15 are multiple choice questions :
 
11. Out of the following, the strongest base in aqueous solution is
 
(A) Methylamine
 
(B) Dimethylamine
 
(C) Trimethylamine
 
(D) Aniline
 
12. Iodoform test is not given by
 
(A) Ethanol
 
(B) Ethanal
 
(C) Pentan-2-one
 
(D) Pentan-3-one
 
13. Out of the following transition elements, the maximum number of oxidation states are shown by
 
(A) Sc (Z = 21)
 
(B) Cr (Z = 24)
 
(C) Mn (Z = 25)
 
(D) Fe (Z = 26)
 
14. Hardening of leather in tanning industry is based on
 
(A) Electrophoresis
 
(B) Electro-osmosis
 
(C) Mutual coagulation
 
(D) Tyndall effec
Please click on below link to download CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A.
2022
CBSE Class 12 Chemistry Question Paper 2022 Set A Solved
CBSE Class 12 Chemistry Question Paper 2022 Set B Solved
CBSE Class 12 Chemistry Question Paper 2022 Set C Solved
2021
CBSE Class 12 Chemistry Question Paper 2021 Set A Solved
CBSE Class 12 Chemistry Question Paper 2021 Set B Solved
CBSE Class 12 Chemistry Question Paper 2021 Set C Solved
2020
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set C
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set D
CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set E
CBSE Class 12 Chemistry Compartment Question Paper Solved 2020 Set A
CBSE Class 12 Chemistry Question Paper 2020 Set A
CBSE Class 12 Chemistry Question Paper 2020 Set B
CBSE Class 12 Chemistry Question Paper 2020 Set C Solved
CBSE Class 12 Chemistry Question Paper 2020 Set D Solved
CBSE Class 12 Commercial Art Compartment Question Paper 2020
2019
CBSE Class 12 Chemistry For Blind Question Paper Solved 2019
CBSE Class 12 Chemistry Question Paper Solved 2019 Set A
CBSE Class 12 Chemistry Question Paper Solved 2019 Set B
CBSE Class 12 Chemistry Question Paper Solved 2019 Set C
CBSE Class 12 Chemistry Question Paper Solved 2019 Set D
CBSE Class 12 Chemistry Question Paper Solved 2019 Set E
CBSE Class 12 Chemistry Question Paper Solved 2019 Set F
CBSE Class 12 Chemistry Question Paper Solved 2019 Set G
CBSE Class 12 Chemistry Question Paper Solved 2019 Set H
CBSE Class 12 Chemistry Question Paper Solved 2019 Set I
CBSE Class 12 Chemistry Question Paper Solved 2019 Set J
CBSE Class 12 Chemistry Question Paper Solved 2019 Set K
CBSE Class 12 Chemistry Question Paper Solved 2019 Set L
CBSE Class 12 Chemistry Question Paper Solved 2019 Set M
CBSE Class 12 Chemistry Question Paper Solved 2019 Set N
CBSE Class 12 Chemistry Question Paper Solved 2019 Set O
2018
CBSE Class 12 Chemistry Board Question Paper Solved 2018 Set 1
CBSE Class 12 Chemistry Board Question Paper Solved 2018 Set 2
CBSE Class 12 Chemistry Board Question Paper Solved 2018 Set 3
CBSE Class 12 Chemistry Compartment Question Paper Solved Solved 2018 Set 1
CBSE Class 12 Chemistry Compartment Question Paper Solved Solved 2018 Set 2
CBSE Class 12 Chemistry Compartment Question Paper Solved Solved 2018 Set 3
2017
CBSE Class 12 Chemistry Question Paper All India with answers 2017 (1)
CBSE Class 12 Chemistry Question Paper All India with answers 2017 (2)
CBSE Class 12 Chemistry Question Paper All India with answers 2017 (3)
CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (1)
CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (2)
CBSE Class 12 Chemistry Question Paper Delhi with answers 2017 (3)
CBSE Class 12 Chemistry Question Paper Foreign with answers 2017 (1)
CBSE Class 12 Chemistry Question Paper Foreign with answers 2017 (2)
CBSE Class 12 Chemistry Question Paper Foreign with answers 2017 (3)
2016
CBSE Class 12 Chemistry Question Paper 2016 Set 1 C
CBSE Class 12 Chemistry Question Paper 2016 Set 1 Delhi
CBSE Class 12 Chemistry Question Paper 2016 Set 1 E
CBSE Class 12 Chemistry Question Paper 2016 Set 1 Foreign
CBSE Class 12 Chemistry Question Paper 2016 Set 1 N
CBSE Class 12 Chemistry Question Paper 2016 Set 1 S
CBSE Class 12 Chemistry Question Paper 2016 Set 2 C
CBSE Class 12 Chemistry Question Paper 2016 Set 2 Delhi
CBSE Class 12 Chemistry Question Paper 2016 Set 2 E
CBSE Class 12 Chemistry Question Paper 2016 Set 2 Foreign
CBSE Class 12 Chemistry Question Paper 2016 Set 2 N
CBSE Class 12 Chemistry Question Paper 2016 Set 2 S
CBSE Class 12 Chemistry Question Paper 2016 Set 3 C
CBSE Class 12 Chemistry Question Paper 2016 Set 3 Delhi
CBSE Class 12 Chemistry Question Paper 2016 Set 3 E
CBSE Class 12 Chemistry Question Paper 2016 Set 3 Foreign
CBSE Class 12 Chemistry Question Paper 2016 Set 3 N
CBSE Class 12 Chemistry Question Paper 2016 Set 3 S
2015
CBSE Class 12 Chemistry Question Paper 2015 (Delhi Set 1) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Delhi Set 1 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Delhi Set 2) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Delhi Set 2 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Delhi Set 3) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Delhi Set 3 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Outside Delhi Set 1) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Outside Delhi Set 1 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Outside Delhi Set 2) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Outside Delhi Set 2 (with answers) Reval
CBSE Class 12 Chemistry Question Paper 2015 (Outside Delhi Set 3) with Answers (Compartment)
CBSE Class 12 Chemistry Question Paper 2015 Outside Delhi Set 3 (with answers) Reval
2014
CBSE Class 12 Chemistry Question Paper 2014 Set 1 - Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 1 - Foreign
CBSE Class 12 Chemistry Question Paper 2014 Set 1 - Outside Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 2 - Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 2 - Foreign
CBSE Class 12 Chemistry Question Paper 2014 Set 2 - Outside Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 3 - Delhi
CBSE Class 12 Chemistry Question Paper 2014 Set 3 - Foreign
CBSE Class 12 Chemistry Question Paper 2014 Set 3 - Outside Delhi
CBSE Class 12 Chemistry Question Paper SA2 2014 (1)
CBSE Class 12 Chemistry Question Paper SA2 2014 (2)
CBSE Class 12 Chemistry Question Paper SA2 2014 (3)
CBSE Class 12 Chemistry Question Paper SA2 2014 (4)
2013
CBSE Class 12 Chemistry Question paper 2013 (1)
CBSE Class 12 Chemistry Question paper 2013 (2)
CBSE Class 12 Chemistry Question paper 2013 (3)
CBSE Class 12 Chemistry Question paper 2013 (4)
CBSE Class 12 Chemistry Question paper 2013 (5)
CBSE Class 12 Chemistry Question paper 2013 (6)
CBSE Class 12 Chemistry Question Paper SA 2 2013 (1)
CBSE Class 12 Chemistry Question Paper SA 2 2013 (2)
CBSE Class 12 Chemistry Question Paper SA1 2013 (1)
CBSE Class 12 Chemistry Question Paper SA1 2013 (2)
CBSE Class 12 Chemistry Question Paper SA2 2013
2012
CBSE Class 12 Chemistry Question paper 2012 (1)
CBSE Class 12 Chemistry Question paper 2012 (2)
CBSE Class 12 Chemistry Question Paper SA 1 2012 (1)
CBSE Class 12 Chemistry Question Paper SA 1 2012 (2)
2011
CBSE Class 12 Chemistry 2011 Solved Question Paper
CBSE Class 12 Chemistry Question paper 2011 (1)
CBSE Class 12 Chemistry Question paper 2011 (2)
CBSE Class 12 Chemistry Question paper 2011 (3)
2010
CBSE Class 12 Chemistry 2010 Solved Question Paper
CBSE Class 12 Chemistry Question Paper SA 1 2010 (1)
2009
CBSE Class 12 Chemistry Question paper 2009 (1)
CBSE Class 12 Chemistry Question paper 2009 (2)
CBSE Class XII Chemistry Question paper 2009
2008
CBSE Class 12 Chemistry Question Paper 2008
CBSE Class 12 Chemistry Question paper 2008 (1)
CBSE Class 12 Chemistry Question paper 2008 (2)
CBSE Class 12 Chemistry Question paper 2008 (3)
CBSE Class 12 Chemistry Question Paper 2008 Answers
CBSE Class 12 Chemistry Question Paper 2008 Answers(2)
CBSE Class 12 Chemistry Question Paper 2008(2)
CBSE Class XII Chemistry Question paper 2008
2007
CBSE Class 12 Chemistry Question paper 2007 (1)
CBSE Class 12 Chemistry Question paper 2007 (2)
CBSE Class 12 Chemistry Question paper 2007 (3)
2006
CBSE Class 12 Chemistry Question paper 2006 (1)
CBSE Class 12 Chemistry Question paper 2006 (2)
CBSE Class 12 Chemistry Question paper 2006 (3)
CBSE Class 12 Chemistry Question paper 2006 (4)
2005
CBSE Class 12 Chemistry Question paper 2005 (1)
CBSE Class 12 Chemistry Question paper 2005 (2)
* More Question Papers
CBSE Class XII Chemistry Question Paper 1
CBSE Class XII Chemistry Question Paper 2
CBSE Class XII Chemistry Question Paper 3
CBSE Class XII Chemistry Question Paper 4 (For Blind Students)
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Class 12 Chemistry Question Paper pdf
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Chemistry Class 12 Question Paper
CBSE Class 12 Chemistry Solved Question Paper
Previous Year Question Paper Class 12 Chemistry

CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A

We hope you liked the above provided CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A. To get an understanding of the type of questions which were asked in previous year exams, it is important for Class 12 students to refer to CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A that we have provided above. Students can download all the Question Papers for Class 12 Chemistry which were issued in the exams so that you can practise them and solve all types of questions which have been asked till now. By doing all CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A PYP (previous year papers) you will understand the regular questions and MCQ questions for Class 12 Chemistry which are always asked and learn them so that you can get full marks in those questions. You can download CBSE Class 12 Chemistry Previous Year Question Papers and Class 12 Chemistry Sample Papers in PDF. You should attempt all the last year question paper for Class 12 and Class 12 Chemistry MCQ Test in examination conditions at home and then compare their answers with the solutions provided by our teachers.
 

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Yes, mock CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set A are available in multiple languages, including English, Hindi