Green house gas is

• Nitrogen

• Oxygen

• sulphur

• Carbon dioxide

Which disease can be possible due to polluted water?

• Cholera

• Typhoid

• Jaundice

• All the above

Corrosion of marble is also called

• Marble-disorder

• Marble-erosion

• Marble cancer.

• Marvellous

Highest percentage of air consists of

• Oxygen

• Carbon dioxide

• Nitrogen

• Argon

Sculptures/monuments and buildings are destroyed by

• ozone layer

• carbon dioxide

• acid rain

• CFCs