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Chemistry

Chemistry
Major gaseous pollutant of the thermal power station is

NH3
H2 S
NO2
SO2

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Chemistry
The metal used to galvanise iron to protect it from rusting is

Chromium
Antimony
Lead
Zinc

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Chemistry
The hydronium ion is

H+
HO -
H2+
H3O+

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Chemistry
The chemical name of 'laughing gas' is

Nitrous oxide
Nitrogen pentoxide
Nitrogen dioxide
Nitric oxide

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Chemistry
When quick lime is added to water

Heat is liberated
No heat change takes place
Heat is absorbed
Temperature decreases

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Chemistry
Normal rainwater is slightly acidic due to the presence of

Sulphur dioxide
Carbon dioxide
None of these
Methane

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