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Chemistry

Chemistry
Which among the following coal contains 90 per cent of carbon?

Bitumen
Anthracite
Peat
Lignite

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Chemistry
Aluminium salt commonly used to stop bleeding is

Aluminium sulphate
Potash alum
Aluminium Chloride
Aluminium nitrate

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Chemistry
Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?

Nickel and cadmium
Iron and cadmium
Lead peroxide and lead
Zinc and carbon

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Chemistry
Which of the following is used to remove ink and rust stains on cloth?

Kerosene oil
Oxalic acid
Ether
Alcohol

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Chemistry
Which colour is produce by Arsenic during flame test

Red
Crimson
Blue
Green

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Chemistry
The constituents of automobile exhaust that can cause cancer is/are :

Polycyclic hydrocarbons
Lead
Oxides of nitrogen
Carbon monoxide

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