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Chemistry

Chemistry
The gas used to extinguish fire is

Carbon monoxide
Nitrogen
Carbon dioxide
Neon

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Chemistry
The chemical name of 'Plaster of Paris' commonly used for setting broken bones is

Calcium nitrate
Calcium carbonate
Calcium chloride
Calcium sulphate

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Chemistry
Which of the following is the maximum number of electrons that can be present in M-shell?

2
8
32
18

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Chemistry
Zone refining is used for the purification of

Ge
Ag
Cu
Au

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Chemistry
Bayer's reagent is

Acidified potassium permanganate
Bromine water
Alkaline potassium permanganate
Hydrogen peroxide

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Chemistry
Soap helps in better cleaning of clothes because

It gives strength to solution
It absorbs the dirt
It reduces the surface tension of solution
Soap acts like catalyst

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MORE MCQ ON Chemistry

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