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Chemistry

Chemistry
Total number of halogen elements found in the periodic table is

13
8
3
5

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Chemistry
Which of the inert gases can form compounds?

Helium
Argon
Krypton
Xenon

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Chemistry
If we burn graphite,

It will change into diamond
Residue will be left
It will not burn
No residue will be left

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Chemistry
Petroleum is a mixture of

Hydrocarbons
Elements
Polymers
Salts

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Chemistry
A fertile soil is likely to have a pH of

14
3
43989
9

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Chemistry
Soap helps in better cleaning of clothes because

It reduces the surface tension of solution
It absorbs the dirt
It gives strength to solution
Soap acts like catalyst

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