Question # 1

The height of stratosphere above earth's is surface is:

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18 km

25 km

50 km

100 km

Water polythene bags can cause.

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Cholera

Choking of drains

Cancer

Typhoid

The height of Stratosphere form sea level is.

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50 km

55 km

60 km

45 km

Meat and eggs are rich in

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carbohydrates

proteins

glucose

vitamin

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

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90%

80%

60%

50%

The rock from which minerals can be obtained are called:

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silicons

ores

metals

gem stone

Thickness of atmosphere is.

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200 km

1000 km

1200 km

1600 km

The thickness of Atmosphere is

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100 km

200 km

300 km

400 km

The percentage of carbon dioxide in Air is:

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40%

0.4%

0.04%

33%

The proportion of carbon dioxide in air is.

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40 percent

0.4 percent

0.04 percent

0.004 percent

-------------- is a mixture of gases like methane, ethane and propane etc.

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Coal

Petroleum

Natural gas

Botha a and b

The percentage of oxygen in Air is

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78%

21%

0.04%

33%

Annual population growth rate of Pakistan is.

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3.0 %

2.0%

3.6%

2.6%

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 pollution can cause.

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Cholera

Typhoid

Cancer

Both a and b

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