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Chemistry

Chemistry
The major constituent of air is

hydrogen
nitrogen
carbon dioxide
oxygen

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Chemistry
Epsom salt is used

In making tooth paste
As purgative
In paper industry
In softening water

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Chemistry
Muscle fatigue is caused by the accumulation of :

Oxalacetic acid
Uric acid
Pyruvic acid
Lactic acid

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Chemistry
Which of the following is used as filler in tyre of rubber ?

Coal
Carbon black
Coke
Graphite

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Chemistry
Which is the purest commercial form of iron ?

Wrought iron
Pig iron
Steel
Stainless steel

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Chemistry
The laws of electrolysis are given by

Lewis
Ostwald
Faraday
Arrhenius

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