Here you can prepare class 12 chemistry chapter 17 Carbon compounds with oxide MCQs with answers that help Sindh board students in their exams.
12 Class Chemistry Chapter 17 MCQs with Answers
This 2nd year’s chemistry chapter 17 Sindh board MCQs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur board students in their examination preparation.
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1. The solubilities of higher alcohols decrease because they tend to resemble:
a) Sugars
b) Glucose
c) Aldehydes
d) Hydrocarbons
Answer: d) Hydrocarbons
2. Alcohol obtained by fermentation never exceeds:
a) 0.14
b) 0.1
c) 0.16
d) 0.95
Answer: a) 0.14
3. Rectified spirit contains alcohol about:
a) 0.8
b) 0.85
c) 0.9
d) 0.95
Answer: d) 0.95
4. Ethyl alcohol when treated with con sulphuric acid may give:
a) Diethyl ether
b) Diethyl sulphate
c) Ethylene
d) All of the above
Answer: d) All of the above
5. Alcoholic fermentation is brought about by
a) CaCl
b) CO2
c) Yeast
d) NaCl
Answer: c) Yeast
6. Reaction of aqueous sodium hydroxide on chlorobenzene gives which of the following products
a) o-chlorophenol
b) o-chlorophenol
c) phenol
d) no reaction
Answer: c) phenol
7. On heating aqueous solution of benzene diazonium chloride, which of the following is formed
a) benzene
b) chlorobenzene
c) phenol
d) aniline
Answer: c) phenol
8. Which of the following is not a method for preparation of phenol
a) Dows process
b) From diazonium salt
c) By decarboxylation of salicylic acid
d) By the decarboxylation of sodium benzoate
Answer: d) By the decarboxylation of sodium benzoate
9. What is the commercial method of preparation of phenol
a) Dows process
b) From diazonium salt
c) By decarboxylation of salicylic acid
d) Hock method
Answer: d) Hock method
10. What is the reagent which will react with cumene to give phenol
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Ozone
Answer: a) Oxygen
11. What are the products when tert-butyl ethyl ether is cleaved with concentrated HI
a) Iodoethane and tert-butanol
b) iodoethane and 2-iodo-2-methylpropane
c) ethanol and 2-iodo-2-methylpropane
d) ethanol and tert-butanol
Answer: c) ethanol and 2-iodo-2-methylpropane
12. Benzoic acid reacts with conHNO3 and conH2SO4 to give
a) o-nitrobenzoic acid
b) p-nitrobenzoic acid
c) m-nitrobenzoic acid
d) o, p-dinitro benzoic acid
Answer: c) m-nitrobenzoic acid
13. A new C-C bond formation is possible in
a) Cannizzaro reaction
b) Friedel crafts reaction
c) clemmensen reduction
d) reimer tiemann reaction
Answer: b) Friedel crafts reaction
14. Under Wolff-Kishner reduction conditions, the conversions which may be brought about are
a) cyclohexanone into cyclohexane
b) benzaldehyde into benzyl alcohol
c) cyclohexanone into cyclohexanol
d) benzophenone into diphenylmethane
Answer: a) cyclohexanone into cyclohexane
Conclusion
The topic of this post is class 12 chemistry chapter 17 MCQs with solved answers for board exam preparation.
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