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Chemistry

Chemistry
Glycol is used to manufacture which of the following ?

Artificial silk
Rubber
Nylon
Terylene

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Chemistry
Maximum permissible concentration of total hardness in drinking water is

500
200
50
100

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Chemistry
What is a common name for the substance which irritates lachrymal glands ?

Noble Gas
Anaesthetic Gas
Laughing Gas
Tear Gas

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

Kerosene
Vinegar
Lemon
Tomato juice

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Chemistry
Which is abundant in Gobar gas?

Carbon dioxide
Methane
Hydrogen
Oxygen

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Chemistry
The property of hydrogen which distinguishes it from alkali metals is

Its reducing character
Its electropositive character
Its affinity for non-metal
Its non-metallic character

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