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Chemistry

Chemistry
The strongest acid of the following is

O-nitrophenol
P-chlorophenol
M-nitrophenol
P-nitrophenol

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Chemistry
The most abundant element in the human body is

Carbon
Iron
Oxygen
Nitrogen

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Chemistry
The most volatile of the given liquids is

Liquid
Liquid He
Ether
Liquid NH3

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Chemistry
Phosphorus is kept in water because

Its critical temperature is low
Its ignition temperature is very low
Its ignition temperature is very high
Its critical temperature is high

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Chemistry
The value of gas constant R in Ergs deg–1 mole–1 is

4.183 × 107
8.314 × 107
8.341 × 107
8.413 × 107

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Chemistry
Which is known as carbolic acid?

Phenol
Acetic acid
Ethanol
Oxalic acid

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