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

81. Which of the following is the use of Aspirin drug?

[A] Reduces fever
[B] helps in skeletal pain
[C] helps in preventing heart attacks
[D] All of the above

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82. Which of these drugs is called as the ‘love drug’?

[A] Mescalin
[C] Dextromethorphan
[D] Ketamine

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83. Which of the following gas is also known as laughing gas?

[A] Nitrous oxide
[B] Nitrogen dioxide
[C] Nitrogen hydroxide
[D] Nitrogen peroxide

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84. Which of the following elements is present in heavy water?

[A] Heavy Oxygen
[B] Heavy Hydrogen
[C] Heavy Chlorine
[D] Heavy Nitrogen

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85. Which of the following celestial bodies contains abundant quantities of helium3 as a potential source of energy?

[A] Moon
[B] Earth
[C] Sun
[D] Mars

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86. Which of the following is the process to remove calcium and magnesium from hard water?

[A] Filtration
[B] Flocculation
[C] Sedimentation
[D] Water softening

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87. Which of the following is the process of loosing electrons?

[A] reduction
[B] oxidation
[C] both oxidation and reduction
[D] radiation

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88. Which among the following is not an example of emulsion?

[A] Butter
[B] Chocolate-Milk
[C] Curd
[D] Whipped Cream

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89. What is the name of the female from Mesopotamian Civilization who is also known to be world’s first recorded chemist?

[A] Berossus
[B] Tapputi
[C] Abba b. Martha
[D] Gobryas

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90. Which of the following gases were called Fixed Air by Scottish physician Joseph Black which is discovered in 1750s?

[A] Oxygen
[B] Carbon Dioxide
[C] Methane
[D] Nitric Oxide

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