Here we are going to provide class 12 Chemistry chapter 14 Introduction to Organic Chemistry solved MCQs that help Sindh board students in their exams.
12 Class Chemistry Chapter 14 MCQs with Answers
This 2nd year’s chemistry chapter 14 Sindh board MCQs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur board students in their examination preparation.
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1. Petroleum is refined by:
a) Destructive distillation
b) Fractional distillation
c) Simple distillation
d) Dry distillation
Answer: b) Fractional distillation
2. Conversion of wood into coal is:
a) Catenation
b) Fraction
c) Carbonization
d) Distillation
Answer: c) Carbonization
3. Main component of natural gas is:
a) Methane
b) Propane
c) Butane
d) Propene
Answer: a) Methane
4. Which one of the following is hardest coal:
a) Peat
b) Lignite
c) Bituminous
d) Anthracite
Answer: d) Anthracite
5. Natural gas is 85% methane. It is used to make the following except:
a) Carbon black
b) Coke
c) Coal tar
d) Coal gas
Answer: c) Coal tar
6. Which one of the following is fraction of crude oil:
a) Paraffin wax
b) Asphalt
c) Fuel oil
d) Petroleum coke
Answer: c) Fuel oil
7. Crude oil is heated in the fractionating furnace up to:
a) 300oC
b) 350oC
c) 400oC
d) 450oC
Answer: c) 400oC
8. Which one of the following is used as jet fuel:
a) Kerosene oil
b) Lubricating oil
c) Fuel oil
d) Diesel oil
Answer: a) Kerosene oil
9. Which one of the following organic compounds is found is gasoline
a) C2H4
b) C3H8
c) C8H18
d) C12H26
Answer: c) C8H18
10. When propene reacts with HBr in the presence of peroxide, it gives rise to
a) allyl bromide
b) isopropyl bromide
c) n-propyl bromide
d) 3-bromopropane
Answer: c) n-propyl bromide
11. Identify the addition reaction which is not undergone by the alkenes
a) Mercuration
b) Oxymercuration
c) Hydroboration
d) Halogenation
Answer: a) Mercuration
12. In Alkenes the Carbon atoms are connected to each other by a ______
a) Single bond
b) Double bond
c) Triple bond
d) Not connected
Answer: b) Double bond
13. Baeyer’s reagent is used to detect:
a) glucose
b) double bonds
c) oxidation
d) reduction
Answer: b) double bonds
14. Which among the following is not colorless
a) Methene
b) Ethene
c) Propene
d) Butene
Answer: b) Ethene
15. How many structural isomers are possible if one hydrogen in diphenylmethane is replaced by chlorine
a) 8
b) 4
c) 7
d) 6
Answer: b) 4
16. Which is the best-suited method for the separation of para and ortho-nitrophenols from 1:1 mixture
a) crystallization
b) chromatography
c) sublimation
d) steam distillation
Answer: d) steam distillation
17. Which of the following methods is best suited for the separation of a mixture containing naphthalene and benzoic acid
a) Crystallization
b) Chromatography
c) Sublimation
d) Distillation
Answer: c) Sublimation
18. The rate of reaction of organic compounds is slow due to:
a) ionic bonding
b) amphoteric nature
c) covalent bonding
d) coordinate covalent bonding
Answer: c) covalent bonding
19. Isomers with similar groups on the same side are called as “trans” isomers.
a) TRUE
b) FALSE
Answer: b) FALSE
Conclusion
The topic of this post is class 12 chemistry chapter 14 mcqs with solved answers that will be beneficial for students in board exam preparations.