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Chemistry

Chemistry
Major gaseous pollutant of the thermal power station is

SO2
NO2
H2 S
NH3

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Chemistry
The major harmful gas emitted by automobile vehicles which causes air pollution is

Ozone gas
Methane
Carbon dioxide
Carbon Monoxide

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Chemistry
Ozone layer is present in

Stratosphere
Ionosphere
Exosphere
Troposphere

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Chemistry
Which of the following metals is used in Space Crafts to withstand high temperatures ?

Ni
Ti
Pb
Fe

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Chemistry
'Vinegar' is a commercial name of

Hydrochloric acid
Citric acid
Acetic acid
Oxalic acid

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Chemistry
The two metal ions that cause hardness to water are:

Sodium, Calcium
Sodium, Magnesium
Sodium, Potassium
Calcium, Magnesium

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