Q.25 Which is the world’s largest dry desert?
(A) Sahara
(B) Thar of Desert
(C) Black Rock Desert
(D) Gobi Desert
Q.26 Which is the world’s second largest desert?
(A) Australian
(B) Thar of Desert
(C) Black Rock Desert
(D) Gobi Desert
Q.27 In which athletics event did Bob Beamon hold the world record for 23 years?
(A) Long jump
(B) Short jump
(C) High jump
(D) jumping
Q.28 What is the best conductor of electricity?
(A) Salt water.
(B) Green water
(C) Cold water
(D) sweet water
Q.29 What is the average salinity of sea water?
(A) 3.5%
(B) 4.5%
(C) 5.5%
(D) 6.5%
Q.30 What is the function of heavy water in a nuclear reactor?
(A) Slow down the speed of neutrons
(B) High down the speed of neutrons
(C) Slow down the speed of protons
(D) High down the speed of protons
Q.31 Who laid the foundation of nuclear science in the country?
(A) Homi J. Bhabha
(B) Albert Einstein
(C) Yuri Gagarin
(D) Abdul Kalam Azad
Q.32 The filament of an electric bulb is made of which metal?
(A) Tungsten
(B)
(C)
(D)
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