Atmospheric pollution

'Pollution' is derived from the latin word

• Pollus

• Pollutan

• pollutus

• pollut

Two forms of acid rain

• Dry deposit

• Humid deposit

• Vapour deposit

• Wet deposit

Natural rain water, formed in unpolluted air is

• basic

• slightly acidic

• highly acidic

• neutral

Nitrogen in air at temperature above ___ combines with oxygen to form nitrogen monoxide

• 1200C

• 1250C

• 1300C

• 1350C

When acid rain falls on earth, the acidity of the soil

• increases

• decreases

• remains the same

Which of the following is NOT a toxic metal present in soil

• Arsenic

• Mercury

• Lead

• Zinc

Which of the following are greenhouse gasses?

• water vapour

• methane

• cfcs

• carbon dioxide

Which contributes most to global warming

• CH4

• N2O

• CO2

• CFCs

Melting of ice-caps results in rise in sea level causing:

• costal flooding

• tsunamis

• erosion

• drought

Ozone layer is a _____ explosive with a pronounced odour.

• bluish

• purplish

• greenish

• none of the above