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Chemistry

Chemistry
The metal used to recover copper from a solution of copper sulphate is

Hg
Na
Fe
Ag

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Chemistry
Which among the following is used to dilute oxygen in the gas cylinders used by divers ?

Argon
Helium
Krypton
Neon

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Chemistry
'Atomic theory' of matter was given by

Newton
Pascal
Dalton
Avogadro

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Chemistry
The main constituent of natural gas is

Butane
Ethane
Propane
Methane

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Chemistry
Galvanised iron is made by coating iron with

Nickel
Chromium
Zinc
Sulphur

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Chemistry
Which among the following is a carbohydrate ?

Cane-sugar
Turpentine
Nylon
Hydrogen peroxide

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