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CHEMISTRY

Chemistry
Poison used for killing rats is

Calcium phosphide (Ca3P2)
Magnesium nitride (Mg3N2)
Magnesium phosphide (Mg3P2)
Zinc phosphide (Zn3P2)

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Chemistry
The chemical used in developing photographic films is

Hypo
Hydroquinone
Silver bromide
Sodium sulphate

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Chemistry
Which one of the following is used as an anti-freeze for the automobile engines ?

Ethanol
Methanol
Ethylene glycol
Propyl alcohol

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Chemistry
Which of the following is not a nitrogenous fetiliser?

Ammonium nitrate
Ammonium sulphate
Superphosphate
Urea

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Chemistry
Which one of the following is used as a sowing agent in the preparation of soft drinks?

Phosphoric acid
Phosphorus acid
Boric acid
Salicylic acid

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