Environmental chemistry

The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was

• phosgene

• methylisocyanate

• methylamine

• ammonia

Taj Mahal is being slowly disfigured and discolored. This is primarily due to

• acid rain

• soil pollution

• water pollution

• global warming

The smog is essentially caused by the presence of

• O2 and O3

• O2 and N2

• oxides of Sulphur and nitrogen

• O3 and N2

Which of the following is not a Greenhouse Gas

• CO₂

• CH_4

• Chlorofluoro Carbons

• O₂

Environmental pollution refers to

• peeling of top soil

• dissipation of energy

• release of toxic/undesirable materials in environment

• none of the above

Photochemical smog is generally formed

• in early hours of winters

• around mid day in summer months

• When intensity of solar radiations is very low

• When concentration of particulate matter is very low.

Chief source of water and soil pollution is

• Mining of ores

• Thermal power plant

• Argo-industry

• All of the above.

Whcih of the following is biodegradable pollutant ?

• Domestic waste

• DDT

• Mercury salts

• Aluminum foil.

Water pollution is due to

• Agricultural discharges

• Sewage and other wastes

• Industrial effluents

• All the above.

Which of the following pose threat to historical monument Taj ?

• Floods in Yanuna river

• Temperature mediated spoilage of marble

• Air pollutants from Mathura refinery

• Weathering of marble.