Question # 1

The coldest layer of the atmosphere

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Troposphere

Stratosphere

Mesosphere

Thermosphere

It is used in microprocessor of computer

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chromite

aluminium

silicon

iron

Water polythene bags can cause.

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Cholera

Choking of drains

Cancer

Typhoid

The main causes of depletion of ozone layer is

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oxygen

hydrogen

chlorofluorocarbon

hydrocarbon

The height of Stratosphere form sea level is.

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50 km

55 km

60 km

45 km

Thickness of atmosphere is.

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200 km

1000 km

1200 km

1600 km

About ......... percent of Pakistan population depend upon agriculture.

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60

70

65

68

Major cause of depletion of zone layer is.

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Oxygen

Hydrogen

Chlorofluorocarbons

Hydrocarbons

Smog can cause.

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Eye diseases

Lung diseases

Cancer

Typhoid

The percentage of carbon dioxide in Air is:

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40%

0.4%

0.04%

33%

-------- types of reptiles are found in Pakistan.

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200

150

100

250

About ........... percent population of Pakistan is dependent upon agriculture.

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90%

80%

60%

50%

At present population is 2.6 percent, in how many years the population of Pakistan will double.

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47 years

37 years

27 years

17 years

Pakistan's population is 1998 was..........

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130.5 million

13.5 million

135 million

0.135 million

Annual population growth rate of Pakistan is.

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3.0 %

2.0%

3.6%

2.6%

How much population of Pakistan depends on agriculture

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90%

80%

60%

50%

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