MCQs of Biology – Environmental Pollution and Global Environmental Change

Freshwater natural resources receive pollutants from:

Residual effect of DDT is upto:

Turbidity of water in freshwater bodies is measured using:

Polluted water not fit for drinking refers to:

The most safest water resource, which is to be used for drinking, is:

Acid rains have pH nearly :

Most noxious gas of vehicular pollution is:

Cooling gas used in refrigeration is:

Ozone layer occurs in:

Lightening and thunder occur in:

BOD value indicates pollution load in:

Level of noise is measured in terms of:

Level of noise should be below 40 dB in:

Noise directly affect the:

Electrostatic precipitator is used to reduce:

Lichens are best indicator of:

Catalytic converter is used to redu se:

Lead pollution occurs in:

Lead is used as antiknock compound with:

Level of dissolved oxygen in a freshwater body should not decrease below:

Particulate matter causes:

Rock- cancer is caused by:

Biological pollutants of drinking water supply are:

LD50 and LD100 doses are determined while using:

BHC and aldrin are:

Pollens of Xanthium and parthenium causes:

Pollution caused by silica dust or iron dust leads to:

Chimobyl Nuclear Mishap occurred in:

CPCB stands for:

Pollens of Xanthium and Parthenium causes:

Pollution free source of energy on earth is:

Air pollution is caused by:

Volcanoes cause:

Excess of nitrate in drinking water system causes:

Biological magnification is reported in pollution caused by:

The most important factor for the formation of photochemical smog is :

Find out the correct statement:

One molecule of CFC can decompose:

Ozone layer in atmosphere is the:

Ozone hole has been first observed near:

Photochemical smog is a:

Polynculear Aromatic Hydrocarbon (PAH) is produced by:

Carboxy – haemoglobin is formed when haemolobin combine with

Parathion and Malathion kill the insects by causing:

Pyrethrum is a:

Greenhouse gases are:

Level of carbon dioxide, in present day atmosphere, is nearly:

Maximum global warming is due to presence f higher amount of:

Methane is released from:

Maximum penetration power is found in: