12th Class Chemistry Mcqs With Answers Chapter 8| 2nd Year chemistry mcqs with answers pdf

12th Class Chemistry Mcqs With Answers Chapter 1	12th Class Chemistry Mcqs With Answers Chapter 2
12th Class Chemistry Mcqs With Answers Chapter 3	12th Class Chemistry Mcqs With Answers Chapter 4
12th Class Chemistry Mcqs With Answers Chapter 5	12th Class Chemistry Mcqs With Answers Chapter 6
12th Class Chemistry Mcqs With Answers Chapter 7	12th Class Chemistry Mcqs With Answers Chapter 8
12th Class Chemistry Mcqs With Answers Chapter 9	12th Class Chemistry Mcqs With Answers Chapter 10
12th Class Chemistry Mcqs With Answers Chapter 11	12th Class Chemistry Mcqs With Answers Chapter 12
12th Class Chemistry Mcqs With Answers Chapter 13	12th Class Chemistry Mcqs With Answers Chapter 14
12th Class Chemistry Mcqs With Answers Chapter 15	12th Class Chemistry Mcqs With Answers Chapter 16
12th Class Chemistry Mcqs With Answers Chapter 17	12th Class Chemistry Mcqs With Answers Chapter 18
12th Class Chemistry Mcqs With Answers Chapter 19	12th Class Chemistry Mcqs With Answers Chapter 20

Chapter No 8

Aliphatic Hydrocarbons

1. Preparation of vegetable ghee involves choose which one is correct:

1. Halogenation
2. Hydrogenation
3. Hydroxylation
4. Dehydrogenation

2. Which type of reactions are given by alkanes choose which one is correct:

1. Polymerization
2. Elimination
3. Addition
4. Substitution

3. The most reactive hydrocarbon is choose which one is correct:

1. Ethene
2. Acetylene
3. Heptane
4. Ethane

4. Formula of chloroform is choose which one is correct:

1. CH₃Cl
2. CCl₄
3. CH₂Cl₂
4. CHCl₃

5. Cycloalkanes and Alkenes contain which general formula choose which one is correct:

1. C_nH_2n+2
2. C_nH2n
3. C_nH_2n−2
4. C_nHn

6. Which of the following is not alicyclic choose which one is correct:

1. Cyclohexene
2. Cyclobutane
3. Toluene
4. Cyclopentene

7. Unsaturated nature of alkene can be detected by choose which one is correct:

1. Decolorization of red Br₂ water in CCl4
2. Decolorization of pink colour of KMnO₄ solution
3. Ozonolysis
4. All

8. The addition of unsymmetrical reagent to an unsymmetrical alkene is in  accordance with the rule choose which one is correct:

1. Hund’s rule
2. Mankownikov’s rule
3. Pauli’s exclusion principle
4. Aufbau principle

9. Vicinal dihalides on treatment with Zn-dust give choose which one is correct:

1. Alkenes
2. Alkynes
3. Alkanes
4. All of them

10. Formula of lindlers catalyst is choose which one is correct:

1. Pb(BaSO₄) / Quinoline
2. Ba(PbSO₄) / Quinoline
3. Pd(BaSO₃) / Quinoline
4. Pd(BaSO₄) / Quinoline

11. Synthetic rubber is made by the polymerization of choose which one is correct:

1. Chloroform
2. Acetylene
3. Divinyl acetylene
4. Chloroprene

12. Ammonical solution of silver nitrate reacts with choose which one is correct:

1. 2-pentyne
2. Ethene
3. 2-butyne
4. Ethyne

13. Polymerization of acetylene forms choose which one is correct:

1. Propane
2. Butane
3. Benzene
4. Napthalene

14. The number of xylene isomers is choose which one is correct:

1. 2
2. 3
3. 4
4. 5

15. Number of acidic hydrogens present in 1-butyne is choose which one is correct:

1. 1
2. 2
3. 3
4. 4

16. Chemically Baeyer’s reagent is choose which one is correct:

1. 1% alkaline KMnO₄
2. 1% acidic KMnO₄
3. 15% alkaline KMnO₄
4.  2% alkaline KMnO₄

17. Which of the following gases is used for artificial ripening of fruits choose which one is correct:

1. Ethene
2. Ethyne
3. Methane
4. Both A.  and (b)

18. Hydroxylation of alkene can be carried out by choose which one is correct:

1. Alkaline KMnO₄
2. O₃
3. H₂SO₄
4. K₂Cr₂O₇

19. Acetylene has a characteristic smell resembling that of choose which one is correct:

1. Rotten egg
2. Garlic
3. Spicy like
4. None of the above

20. When ethylene ozonide is treated with Zn-dust we get choose which one is correct:

1. Ethanal
2. Methanal
3. Methanol
4. Ethanol