Q.

Poison used for killing rats is –

A. Calcium phosphide (Ca3P2)
B. Zinc phosphide (Zn3P2)
C. Magnesium nitride (Mg3N2)
D. Magnesium phosphide (Mg3P2)
Answer» B. Zinc phosphide (Zn3P2)
Explanation: Zinc phosphide is an inorganic compound that is used in pesticide products as a rodenticide. Formulated as attractive bait, it releases phosphine gas once it is exposed to acid and moisture in the stomach. The phosphine gas is very toxic to all animals.
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