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Chemistry

Chemistry
Major gaseous pollutant of the thermal power station is

H2 S
SO2
NH3
NO2

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Chemistry
The components of water can be separated by

They can not be separated
Both A and B
Physical methods
Chemical methods

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Chemistry
The polymer used in making plastic crockery is

Melamine
Bakelite
Decron
Nylon

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Chemistry
Liquid Nitrogen boils at

82 Kelvin
54 kelvin
97 Kelvin
77 kelvin

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Chemistry
Synthetic detergents are prepared from

Sodium salts of higher fattyacids
Potassium salts of higher fatty-acids
Glycerides
Hydrocarbons of petroleum

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Chemistry
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

100 years
13 days
3 billion years
0.01 minute

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