CBSE Class 11 Chemistry Sample Paper 2013 (11)

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CBSE Chemistry Sample Paper for Class 11 CBSE exams for CBSE Students. Based on CBSE and CCE guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination. Please refer to more CBSE Class 11 question papers in other links. The CBSE Question papers are prepared based on trend in past examinations and expected questions in CBSE exams. Its always recommended by CBSE to practice the papers released by CBSE to get better exams in CBSE exams. CBSE Last Year Question Papers for class 11 for final/ term/ SA1/ SA2 Examinations conducted by Central Board of Secondary Education for all CBSE affiliated schools in India and abroad. Please refer to more CBSE Class 11 sample papers, question papers, HOTs etc in other links


 General Instructions

i) All questions are compulsory.

ii) Marks for each question are indicated against it.

iii) Question numbers 1 to 8 are very short answer questions, carrying 1 mark each. Answer these in one word or about one sentence each.

iv) Question numbers 9 to 18 are short answer questions, carrying 2 marks each. Answer these in about 30 words each.

v) Question numbers 19 to 27 are short answer questions carrying 3 marks each. Answer these in about 40 words each.

vi) Question numbers 28 to 30 are long answer questions carrying 5 marks each. Answer these in about 70 words each.

vii)Use log tables, if necessary. Use of calculator is not permitted.

1. How many significant figures are present in the following?

       a) 0.0025               b) 208         c) 5005                

       d) 126,000             e) 2.0034 

2. Why liquids diffuse slowly compared to gases? 

3. What happens if a liquid is heated to the critical temperature of its vapour? 

4. Name the factors that do not affect the valence shell. 

5. Name the groups of elements classified as s, p and d-blocks. 

6. A piece of burning Mg keeps on burning in a jar of sulphur dioxide. Why? 

7. Suggest a reason as to why CO is poisonous in nature. 

8. Why boric acid is polymer?

9. What are electron deficient compounds? Are BCl3 and SiCl4 electron deficient species? Explain. 

10. Arrange the following in the order of increasing hydrogen bonding strength – O, F, S, N, Cl. 

11. How do atomic radii vary in a period and in a group? Explain the variation. 

12. List the important postulates of kinetic theory of gases. 

13. Give the important ores of sodium and potassium. \

14. If mass of air at sea level is 1034 g/cm2, then calculate the pressure in pascal. [1Pa = 1Nm-2]. 

15. Justify by giving reactions that fluorine is the best oxidant and hydroiodic acid is the best reductant. 

16. What is the lowest value of ‘n’ that allows ‘g’ orbitals to exist? 

17. An electron is in one of the 3d orbitals. Give the possible values of n, l and m for this electron. 

18. Predict the acidic, basic or neutral nature of the solutions of: NaCl, KBr, NaCN, NH4NO3, NaNO2, KF. 

19. Benzene contains 3 double bonds yet it behaves as saturated compound. Explain.

Please refer to attached file for CBSE Class 11 Chemistry Sample Paper 2013 (11)




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