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Chemistry

Chemistry
The elements with atomic numbers 9, 17, 35, 53, 85 are all

Heavy metals
Light metals
Halogens
Noble gases

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Chemistry
Which one of the following chemicals helps in fruit ripening?

Ethephon
Malathion
Isoproturan
Atrazine

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Chemistry
Chemical name of vinegar is

Formaldehyde
Acetic acid
Ethanol
Acetone

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Chemistry
Chemical composition of cement is

Limestone and Clay
Limestone and Gypsum
Limestone, Clay and Gypsum
Clay and Gypsum

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Chemistry
The first metal used by a man was

Copper
Silver
Bronze
Brass

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Smog
Sleet
Mist
Fog

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MORE MCQ ON Chemistry

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