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CHEMISTRY

Chemistry
Poison used for killing rats is

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

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Chemistry
The chemical used in developing photographic films is

Silver bromide
Sodium sulphate
Hypo
Hydroquinone

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

Methanol
Propyl alcohol
Ethylene glycol
Ethanol

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Chemistry
Which of the following is not a nitrogenous fetiliser?

Urea
Ammonium nitrate
Ammonium sulphate
Superphosphate

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

Phosphorus acid
Salicylic acid
Phosphoric acid
Boric acid

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