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Chemistry

Chemistry
Most commonly used bleaching agent is

Sodium chloride
Carbon dioxide
Alcohol
Chlorine

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Chemistry
Phosphorus is kept in water because

Its critical temperature is high
Its ignition temperature is very high
Its critical temperature is low
Its ignition temperature is very low

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Chemistry
Who developed Hydrogen Bomb?

Samuel Cohen
J. Robert Oppen Heimer
Edward Teller
Wernher Von Braun

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Chemistry
The luster of a metal is due to

presence of free electrons
its high density
its chemical inertness
its high polishing

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Chemistry
The element with highest first ionisation energy is

Helium
Hydrogen
Sodium
Lithium

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Chemistry
The chemical that is used to ripen mangoes is

Calcium carbide
Calcium carbonate
Calcium sulphide
Calcium chloride

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MORE MCQ ON Chemistry

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