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Chemistry

Chemistry
The chemical used in developing photographic films is

Sodium sulphate
Hypo
Hydroquinone
Silver bromide

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Chemistry
Sulphur dioxide level in the atmosphere can be reduced by using

Catalytic converters in industry
More efficient car engines
Low - sulphur fuels
Static electricity to attract it in factory chimneys

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

liquation
magnetic separation
levigation
leaching

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Chemistry
Smoke is formed due to

Gas dispersed in gas
Gas dispresed in solid
Solid dispersed in gas
Solid dispresed in liquid

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Chemistry
If a buffer solution is diluted its pH

Is decreased
Will slowly increase and then it will decrease
Remains same
Is increased

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

Kerosene oil
Ether
Oxalic acid
Alcohol

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