Class: 1st year

Class: 2nd year Test Of Chemistry Total marks: 507 chapter

Time limit: 100minQ.1 Four possible options have been given. Tick (() mark the correct option.

101.Which one of the following contains Imine functional group:

(a) CH2 CH2 SH(b) CH3 CH2 NH2(c) CH2 CH2 = NH(d) CH2 CH2 NH32. Isomerism arises due to restricted rotation around carbon- carbon double bond is:

(a) Cis-trans isomerism (b) Position isomerism (c) Metamerism (d) Structural isomerism

3. Regular geometry of structure is formed by:

(a) sp3-hysbridization (b) sp2-hybridization(c) sp-hybridization(d) none of these

4. CH3-CH2-CH = CH2 and CH3-CH = CH-CH3 are:

(a) metamers

(b) Position isomers

(c) functional group isomers

(d) chain isomers

5. Which one of the following show the sp3-hybridization. (a) Methane

(b) Ethane

(c) Ethyne

(d) both a and b6.Octane number of iso-octane is

(a) 90%

(b) 70%

(c) 80%

(d) 100%7.Due to knocking the efficiency of an engine

(a) increase

(b) decrease

(c) remain same (d) none of these 8.A sharp metallic sound produced in an engine before the spark plug fire is called

(a) knocking

(b) octane number (c) both a & b

(d) None 9.Ketones show the phenomenon of

(a) structural isomerism

(b) position isomerism

(c) chain isomerism

(d) metamerism

10.Select from the following the one which is ether

(a) CH3 CH2 OH

(b) CH3 O CH3(c) CH3COOH

(d) CH3 CH2 Br Q.2.Short Questions (any ten)

2x10 = 201. How aromatic compounds are identified?

2. How octane number of petroleum can be improved?

3. Why cracking of petroleum is done? 4. Differentiate b/w aromatic and non-aromatic compounds.

5. What is vital force theory? How this theory was rejected?6. Why 1 butene does not show geometrical isomerism while 2 butene does show? 7. Write any three importance of organic chemistry. 8. Write any three uses of cracking. 9. Difference between knocking and octane number.10. Define fractional distillation of petroleum.11. What is organic compound? Give its importance in life.

12. What is metamerism?13. What is functional group isomerism?14. Define functional group.

15. Why the reactions of organic compounds are slower than the reactions of inorganic compounds?Attempt any Two Questions

10 x 2 = 20Q.3.(a) Describe different fractions obtained during the fractional distillation of petroleum.

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(b) Define cracking of petroleum and explain its types.

06Q.4.(a) Describe sp3-hybridization in detail.

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(b) Explain geometrical isomerism.

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Q.5.(a) Describe classification of organic compounds.

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(b) Explain sp2-hybridization.

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