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Chemistry

Chemistry
The antiseptic compound present in dettol is

Cresol
Iodine
Biothional
Enloroxylenol

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Chemistry
The luster of a metal is due to

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

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Chemistry
Ozone layer of atmosphere absorbs:

Cosmic rays.
Infra-red rays
Ultraviolet rays
All radiations of Light

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Chemistry
Ultraviolet rays can be used in water treatment as

Disinfectant
Precipitator
Flocculator
Hydrolyser

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Chemistry
The sewage obtained from water closets and urinals is known as

Sanitary waste
Industrial waste
Garbage
Sullage

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Chemistry
The first metal used by a man was

Bronze
Copper
Brass
Silver

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MORE MCQ ON Chemistry

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