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Chemistry

Chemistry
DDT and BHC may act as

Allergens
Asthematic agents
Carcinogens
None of these

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Chemistry
Philosopher’s wool is chemically

Zinc oxide
Magnesium oxide
Aluminium oxide
Calcium oxide

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Chemistry
The molecular formula of phosphorous is

P4
P1
P3
P2

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Chemistry
The Refrigerant 'FREON' is

Calcium Tetra Fluoride
Fluorspar and Felspar
Difluoro Dichloro Methane
Hydrofluosilicic Acid

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Chemistry
Burning pyrites ore gives out

Nitric oxide gas
Sulphur dioxide gas
Carbon dioxide gas
Nitrogen dioxide gas

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

Malathion
Atrazine
Isoproturan
Ethephon

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MORE MCQ ON Chemistry

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