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Chemistry

Chemistry
Major gaseous pollutant of the thermal power station is

NO2
SO2
H2 S
NH3

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Chemistry
The gas used for artificial ripening of green fruit is

carbon dioxide
ethane
ethylene
acetylene

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Chemistry
The drug ‘Marijuana’ is a

Tranquillizer
Sedative
Hallucinating substance
Mental stimulant

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Chemistry
When a spoon is to be electroplated with nickel the spoon is

Made anode and a pure nickel rod, the cathode
Made cathode and a pure nickel red, the anode
Coated with nickel sulphate and dried
Dipped in a nickel sulphate solution

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Chemistry
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to

SO2
NO2
SO3
N2O

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Chemistry
The gas which is mainly responsible for the green house effect is:

Carbon dioxide
Ozone
Oxygen
Carbon monoxide

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