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Chemistry

Chemistry
Methanoic and ethanoic acids can be distinguished by the action of

NaOH
NaHCO3
Tollen's reagent
SOCl2

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Chemistry
Phosphorus is kept in water because

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

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Chemistry
Nitric acid does not react with

Copper
Iron
Gold
Zinc

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Chemistry
The fundamental particles present in the nucleus of an atom are

Electron, proton
Neutron, positron
Proton, neutron
Neutron, electron

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Chemistry
The main active constituent of tea and coffee is

aspirin
chlorophyll
nicotine
caffeine

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Chemistry
Spirit in contact with body gives cool sensation because it is :

Liquid
Highly volatile
Transparent
A good conductor

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