The property of a substance to absorb moisture from the air on exposure is called____________
(A) osmosis
(B) deliquescence
(C) efflorescence
(D) desiccation
The variety of coal in which the deposit contains recognizable traces of the original plant material is____________
(A) bitumen
(B) anthracite
(C) lignite
(D) peat
Bromine is a___________________
(A) black solid
(B) red-brown liquid
(C) colourless gas
(D) highly inflammable gas
Second layer of Earth’s atmosphere is__________
(A) Stratosphere
(B) Mesosphere
(C) Troposphere
(D) Thermosphere
Border line which separates outer space from Earth’s atmosphere is known as___________
(A) Durand line
(B) Space line
(C) Venus line
(D) Karman line
Places experiencing equal impact of an earthquake are called_________________
(A) Seismic lines
(B) Seismic built
(C) Seismic plates
(D) Seismic waves
The atmospheric greenhouse effect is produced mainly by the __________________
(A) Absorption and re-emission of visible light by the atmosphere
(B) Absorption and re-emission of ultraviolet radiation by the atmosphere
(C) Absorption and re-emission of infrared radiation by the atmosphere
(D) Absorption and re-emission of visible light by clouds
(D) Absorption and re-emission of visible light by the ground