General Science Chemistry MCQs

Chemistry Objective (Multiple Choice) General Knowledge Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examination

61. Ethanoic acid is the main constituent of which of the following substances?

[A] Soap
[B] Vinegar
[C] Wine
[D] Curd

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62. What is the chemical formula of Hydrogen Cyanide?

[A] HCN2
[B] H2CN
[C] HCN
[D] HC

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63. Which of the following compounds can be made by blowing ozone at dry ice?

[A] Carbonic acid
[B] Carbon dioxide
[C] Carbon trioxide
[D] Methane

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64. Which of the following represents the mixture of carbon monoxide and nitrogen?

[A] Coal tar
[B] Producer gas
[C] Water gas
[D] All of the above

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65. Which of the following represents the mixture of carbon monoxide and hydrogen?

[A] Water gas
[B] Producer gas
[C] Coal Tar
[D] Bitumen

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66. What is the octane number of iso-octane?

[A] 1
[B] 0
[C] 100
[D] 200

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67. Which of these polymers are used to produce Butyl-rubber?

[A] butadiene and neoprene
[B] butadiene and styrene
[C] butadiene and acrylonitrile
[D] butadiene and isobutylene

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68. What is the monomer unit of Teflon?

[A] Acetylene
[B] terafluoroethylene
[C] neoprene
[D] Propylene

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69. What is the monomer unit of PMMA?

[A] butyl methacrylate
[B] ethyl methacrylate
[C] methyl methacrylate
[D] iso-propyl methacrylate

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70. Which of these is a biodegradable polymer?

[A] PLA
[B] PCL
[C] PGA
[D] All of the above

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