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Chemistry

Chemistry
Brass is a solution of molten copper in

Gaseous zinc
Molten zinc
Solid zinc
Molten tin

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Chemistry
What is 'milk of magnesia' chemically?

Calcium hydroxide
Sodium bicarbonate
Magnesium hydroxide
Magnesium carbonate

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Chemistry
In vulcanisation process, rubber can be hardened by adding

Sulphur
Silicon
Alcohol
Nitrogen

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Chemistry
The alkaloid naturally found in coffee, cocoa and cola nut is

Morphine
Caffeine
Tannin
Cocaine

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Chemistry
The mass of one Avogadro number of helium atom is

1.00 gram
8.00 gram
4 x 6.02 x 1023 gram
4.00 gram

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Chemistry
Coal is formed from

Compressed and hardened biomass
Crude oil
Deposit of animal waste
Coke

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MORE MCQ ON Chemistry

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