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. How are the soaps that float in water prepared?

[A] By adding a gum called as rosin
[B] By beating tiny air bubbles
[C] By dissolving soap in ethanol
[D] None of the above

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82. What is the chemical formula of Stearic acid?

[A] C17H34CO2H
[B] C17H35CO2H
[C] C18H36CO2H
[D] None of the above

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83. Which of these artificial sweeteners has the highest sweetness value?

[A] Saccharin
[B] Sucralose
[C] Aspartame
[D] Alitame

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84. What is the sweetness value of Aspartame in comparison to the cane sugar?

[A] 10
[B] 100
[C] 200
[D] 500

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85. 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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86. Which of the following antiseptic compounds is present in Dettol?

[A] Iodine
[B] Cresol
[C] Chloroxylenol
[D] Biothional

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87. After whom is the chemical element with atomic number 102 named?

[A] Charles Darwin
[B] Albert Einstein
[C] Alfred Bernhard Nobel
[D] Isaac Newton

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88. 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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89. Which of the following is not an example of Allotrope?

[A] Steel
[B] Graphite
[C] Diamond
[D] Charcoal

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90. Supercooling is cooling of Liquid at which of the following points?

[A] below freezing point
[B] above melting point
[C] melting point
[D] below melting point

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