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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

0.12 gms
120 gms
12 gms
1.2 gms

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Chemistry
Sour taste of lemon is due to the presence of which of the following ?

Citric acid
Formic acid
Acetic acid
Oxalic acid

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Chemistry
Which variety of coal contains recognisable traces of the original plant material ?

Bitumen
Lignite
Anthracite
Peat

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Chemistry
An emulsion is a colloidal solution of

Solid in Solid
Liquid in liquid
Solid in liquid
Gas in solid

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Chemistry
When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

Oxygen
Carbon dioxide
Hydrogen
All of them

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Chemistry
The inert gas used as beacon light is

Ne
He
Ar
Kr

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