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Chemistry

Chemistry
The most common cause of pollution of air is

Carbon monoxide
Carbon dioxide
Sulphur dioxide
Smoke

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Chemistry
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

discovery of elements
metallurgy
periodic table of contents
atomic structure

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Chemistry
Polythene is polymer of

Acetylene
Aniline
Ethylene
Propylene

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Chemistry
The Refrigerant 'FREON' is

Fluorspar and Felspar
Hydrofluosilicic Acid
Difluoro Dichloro Methane
Calcium Tetra Fluoride

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Chemistry
Cyanide poisoning causes death in seconds because

It causes cardiac arrest
It denatures enzymes of the heart/muscle
It causes Lysis of red blood cells
It breaks the electron transport chain

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Chemistry
Tear gas used by the police to disperse the mob contains

Carbon dioxide
Ammonia
Hydrogen sulphide
Chlorine

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MORE MCQ ON Chemistry

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