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Chemistry

Chemistry
Which of the following is ozone depleting pesticide ?

Benzene
D.T.
Ethylene ozonide
Methyl bromide

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Chemistry
Quartz is made of

Calcium Sulphate
Calcium Silicate
Sodium Silicate
Sodium Sulphate

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Chemistry
The most important ore of lead is

Magnetite
Pyrolusite
Galena
Siderite

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Chemistry
Sulphur dioxide level in the atmosphere can be reduced by using

More efficient car engines
Static electricity to attract it in factory chimneys
Low - sulphur fuels
Catalytic converters in industry

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Chemistry
An emulsion is a colloidal solution of

Gas in solid
Solid in Solid
Solid in liquid
Liquid in liquid

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Chemistry
Alum is used as

An analgesic
A fertilizer
A disinfectant
A purifier for water

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MORE MCQ ON Chemistry

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