The ozone layer absorbs
(A) infrared radiation
(B) microwaves
(C) radio wave
(D) ultraviolet rays
The ozone layer in the atmosphere is at a height of about
(A) 25 km
(B) 50 km
(C) 100 km
(D) 200 km
The normal temperature of human body is
(A) 37°C
(B) 37°F
(C) 104°F
(D) 36.8°C
Bernoulli’s theorem is applicable to:
(A) flow of liquids
(B) viscosity
(C) surface tension
(D) static fluid pressure
Unit of solid angle is:
(A) degree
(B) radian
(C) steradian
(D) radian-second
What is the basic unit of speed?
(A) Kilometre/Minute
(B) Metre/Minute
(C) Kilometre/Hour
(D) Metre/Second
Which of the following metals is in a liquid state at orbital temperature?
(A) Mercury
(B) Tungsten
(C) Lead
(D) Bromine
Who propounded the word molecule?
(A) E. Rutherford
(B) JJ thomson
(C) Democritus
(D) John Dolton
Which country has got its first female Prime Minister?
(A) Somalia
(B) UAE
(C) Sri Lanka
(D) Chad
Which gas comes out when a metal reacts with water?
(A) Oxygen
(B) Nitrogen
(C) Chlorine
(D) Hydrogen
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