Natural Science Quiz Questions and Answers for Competitive Exams

Science Quiz: 2020

25. What is marsh gas?
(A) Methane

(B) Hydrogen

(C) Carbon-di-oxide

(D) Helium

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26. What is the chemical name of Chinese salt?
(A) Monosodium glutamate

(B) Polythene

(C) Nylon

(D) Teri cot

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27. Which is the purest form of carbon?
(A) Graphite

(B) Sodium Nitrate

(C) Methane

(D) Athens

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28. Which is called white poison?
(A) Sugar

(B) Glucose

(C) Fructose

(D) Sweets

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29. Which is the simplest sugar?
(A) Glucose

(B) Cellulose

(C) Fructose

(D) Sweets

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30. What is the biological polymer in paper?
(A) Cellulose

(B) Polythene

(C) Nylon

(D) Teri cot

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31. Lysergic acid diethylamide (LSD) is a drug used as a:

(A) Steroid

(B) Sedative

(C) Analgesic

(D) Hallucinogen

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32. Which of the following substances undergo ‘sublimation’ on heating.

(1.) Iodine

(2.) Naphthalene

(3.) Camphor

(A) 1 and 2

(B) 1 and 3

(C) 2 and 3

(D) All of them

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