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Chemistry

Chemistry
The gas that usually causes explosions in coal mines is

Methane
Air
Carbon monoxide
Hydrogen

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Chemistry
Which of the following substance's smell is similar to Ethanoic acid?

Tomato juice
Vinegar
Kerosene
Lemon

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Chemistry
The anode of a dry cell is made up of

Lead
Iron
Cadmium
Zinc

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Chemistry
The monomer of polythene is

ethylene
ethyl alcohol
None of these
vinyl chloride

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Chemistry
A powerful eye irritant present in smog is

Peroxyacetyl nitrate
Nitric oxide
Sulphur dioxide
Carbon dioxide

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Chemistry
A polymeric substance used to make parachute is

Viscose
Cotton
Terylene
Rayon

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