CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B

Read and download CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B 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 B

Chemistry Class 12 Question Paper

SECTION A
 CHEMISTRY
Read the given passage and answer the questions number 1 to 5 that follow :
 
Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, etc. Drugs including nicotine, morphine, codeine and heroin, etc. which have physiological effects on humans also contain amino group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen.
 
Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen.
 
1. What are amino acids ?
 
2. Why are amino acids amphoteric ?
 
3. Give one point of difference between acidic and basic amino acid.
 
4. What are essential amino acids ?
 
5. Name the linkage formed when carboxyl end of one amino acid condenses with amino end of other amino acid.
 
6. Name the process used for the benefaction of ores if the ore is soluble in some suitable solvent.
 
7. Give an example of a metal which can be purified by the process of distillation.
 
8. What type of isomerism is shown by the complex [Co(NH3)5 NO2] Cl2 ?
 
9. An organic compound is adsorbed on the surface of silica gel. Name the process of removing the organic compound from silica gel.
 
10. Calculate the overall order of the reaction whose rate law expression was predicted as :
Rate = k[NO]3/2 [O2]1/2
 
Questions number 11 to 15 are multiple choice questions :
 
11. 50 mL of an aqueous solution of glucose C6H12O6 (Molar mass : 180 g/mol) contains 6·02 x 1022 molecules. The concentration of the solution will be
 
(A) 0·1 M
 
(B) 0·2 M
 
(C) 1·0 M
 
(D) 2·0 M
 
12. If the standard electrode potential of an electrode is greater than zero, then we can infer that its
 
(A) reduced form is more stable compared to hydrogen gas.
 
(B) oxidised form is more stable compared to hydrogen gas.
 
(C) reduced and oxidised forms are equally stable.
 
(D) reduced form is less stable than the hydrogen gas.
 
13. Total number of unpaired electrons present in Co3+ (Atomic number = 27) is
 
(A) 2
 
(B) 7
 
(C) 3
 
(D) 5
Please click on below link to download CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B.

CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B

We hope you liked the above provided CBSE Class 12 Chemistry Boards 2020 Question Paper Solved Set B. 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 B 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 B 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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