Pollution of Air

______ is formed by incomplete combustion of fuels and is a major source of air pollution

• Chlorofluorocarbons

• Carbon-dioxide

• carbon-monoxide

• Methane

______ combines with other air pollutants and ______ to form smog.

• smoke and CFCs

• smoke and fog

• Fog and Nitrogen-dioxide

• smoke and acid rain

Ozone layer in the atmosphere is known to protect Earth from harmful _________.

• Chlorofluorocarbons

• sulphur dioxide

• green house effect

• UV radiations

Carbon monoxide combines with the haemoglobin (in blood) to form a complex substance known as ________ .

• Carbon haemoglobin

• carboxy haemoglobin

• Oxygen haemoglobin

• None of the above

The gradual increase in the average temperature of the Earth is called as __________.

• Global Warming

• Green house effect

• Marble cancer

• Smog

The main gases that trap the solar heat radiations after their reflection from the earth are ____________

• methane , carbon monoxide , chlorofluorocarbons

• carbon dioxide , methane , water vapours , nitrous oxide

• Carbon monoxide , nitrogen dioxide and chlorofluorocarbons

• carbon monoxide , methane , nitrogen dioxide , water vapours

State true or false . Deforestation should not be stopped.

• True

• False

State true or false . The phenomenon of corrosion of marble (of the monument) by acid rain.

• True

• False

The change in the colour of the Taj Mahal is due to the --

• Coal

• Acid rain

• smog

• Oxygen

State true or false. The exhaust caused from automobiles is eco-friendly for the environment.

• True

• False