Science GK Questions and Answers for SSC Exam
General Science
Q.11 Ozone layer is present in
(A) Troposphere
(B) Ionosphere
(C) Stratosphere
(D) Exosphere
Ans . B
Q.12 Which is the lowest layer of the atmosphere?
(A) Troposphere
(B) Stratosphere
(C) Mesosphere
(D) Thermosphere
Ans . A
Q.13 Which one of the following is a major constituent of Biogas?
(A) Carbon dioxide
(B) Methane
(C) Hydrogen
(D) Nitrogen Dioxide
Ans . B
Q.14 Sea breeze is formed during
(A) Day time
(B) Night time
(C) Both
(D) Seasonal
Ans . A
Q.15 The Refrigerant 'FREON' is
(A) Calcium Tetra Flouride
(B) Diflouro Dichloro Methane
(C) Flourspar and Felspar
(D) Hydrofluosilicic Acid
Ans . B
Q.16 Now a days, Yellow lamps are frequently used as street lights. Which among the following gases, is used in these lamps?
(A) Sodium
(B) Neon
(C) Hydrogen
(D) Nitrogen
Ans . A
Q.17 The atmospheric air is held to the earth by
(A) Gravity
(B) Winds
(C) Clouds
(D) Rotation of the earth
Ans . A
Q.18 The Noble Gas used for the treatment of cancer is ___?
(A) Helium
(B) Argon
(C) Krypton
(D) Radon
Ans . B
Q.19 The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organisms is
(A) 4 – 6
(B) 2 – 4
(C) 8 – 10
(D) 12 - 16
Ans . A
Q.20 Troposphere is the hottest part of the atmosphere because
(A) it is closest to the Sun
(B) there are charged particles in it
(C) it is heated by the Earth’s surface
(D) heat is generated in it
Ans . C
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Rajesh Bhatia
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