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Chemistry

Chemistry
Which of the following fuels causes minimum environmental pollution?

Coal
Kerosene
Hydrogen
Diesel

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Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Propane
Butane
Ethane
Methane

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Chemistry
Commercially, sodium bicarbonate is known as

Soda ash
Washing soda
Baking soda
Bleaching powder

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Chemistry
If a buffer solution is diluted its pH

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

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

Neon
Argon
Krypton
Helium

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Industrial smog formation
Depletion of fossil fuel reserves
Eutrophication in lakes
Lowering of pH of soil

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