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Chemical Process

Chemical Process
Enzymes are organic catalysts used in the __________ reactions.

Electrochemical
Chemical
Photochemical
Biochemical

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Chemical Process
Fumigant insecticides

Kill insects, when they eat it
Emit poisonous vapour
Are absorbed throughout the plant
None of these

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Chemical Process
Na₂CO₃ is called

Soda ash
Washing soda
Plaster of paris
Calcite

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Chemical Process
Hydrogenation of edible vegetable oils

Is an exothermic reaction
All of these
Increases their melting point
Is done in presence of nickel catalyst

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Chemical Process
Which of the following is used as a coagulant in treating turbid water?

Chlorine
Calcium sulphate
Activated carbon
Ferric sulphate

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Chemical Process
Salt cake is chemically represented by

CaSO₄.1/2 H₂O
BaSO₄
MgSO₄
Na₂SO₄

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