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Chemistry

Chemistry
The Bhopal tragedy was caused by the gas

Methyl isocyanate
Chlorine
Phosgene
Carbon monoxide

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Chemistry
An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a :

Generator
Battery
Uninterrupted power supply (UPS)
Power transmittor

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Chemistry
Setting of plaster of paris involves

Oxidation process
Dehydration process
Hydration to form other hydrates
Reduction process

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Chemistry
In galvanization, iron is coated with

Zinc
Nickel
Copper
Tin

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Oxygen
Carbondioxide
Nitrogen
Sulphurdioxide

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Chemistry
Hydrogen is not found in atmosphere because

It is the lightest gas
It immediately combines with oxygen to form water
It is highly inflammable
It is absorbed by plants

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