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Chemistry

Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Methane
Carbon dioxide
Ozone
Nitrogen

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Chemistry
The graphite rods in the nuclear reactor

undergo combustion which triggers the nuclear fission
convert fast moving neutrons into thermal neutrons
produce neutrons
react with U to release energy

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Chemistry
Cement containing excess amount of lime

Is quick setting
Becomes more strong
Cracks during setting
Is slow setting

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Chemistry
Which among the following is a carbohydrate ?

Hydrogen peroxide
Cane-sugar
Turpentine
Nylon

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Chemistry
Which of the following is used to iodise common salt ?

Potassium iodate
Iodine
Sodium iodide
Potassium iodide

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Chemistry
What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ?

There is a crackling sound
The paper ignites
There is a violent explosion.
There is no reaction.

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