| 1 |
Iron and steel structure are damaged by. |
Carbon monoxide
Sulphur dioxide
Methane
Carbon dioxide
|
| 2 |
Which one of the following is not an air pollutants? |
Nitrogen
Carbon dioxide
Nitrogen oxide
Ozone
|
| 3 |
Ozone is beneficial for us as it |
Absorb infrared radiation.
Absorb Ultraviolet radiations.
Absorb Chlorofluorocarbons
Absorb Air pollulant
|
| 4 |
Acid rain affects the aquatic life by clogging fish gills because of: |
Lead metal
Chromium metal
Mercury metal
Aluminium metal
|
| 5 |
Building are being damaged by acid rain because it attacks. |
Calcium sulphate
Calcium nitrate
Calcium carbonate
Calcium oxalate
|
| 6 |
Normally rain water is weakly acidic because of. |
SO<sub>3</sub> gas.
CO<sub>2</sub>gas.
SO<sub>2</sub>gas.
NO<sub>2</sub>gas.
|
| 7 |
Which one of the following is not a greenhouse Effect? |
Increasing atmosphere temperature.
Increasing food chains
increasing flood risks
Increasing sea-level
|
| 8 |
The Earth's atmosphere is getting hotter because of. |
Increasing concentration of CO
Increasing concentration of CO<sub>2</sub>
Increasing concentration of O<sub>3</sub>
Increasing concentration of SO<sub>2</sub>
|
| 9 |
A group of gases that maintains temperature of atmosphere is. |
Carbon dioxide and water vapours
Nitrogen and carbon dioxide
Thermosphere
Troposphere
|
| 10 |
Just above the Earth's surface is |
Mesosphere
Stratosphere
Theremosphere
Troposphere
|
| 11 |
About 99% atmosphere's lies within: |
30 kilometre
35 kilometre
15kilometre
11 kilometre
|
| 12 |
White viscous fluid present in an egg is. |
Proten
Fats
Vitamin
Carbohydrates.
|
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