. A blue crstalline salt, used as fungicide in agriculture is


(a)          blue vitriol.

(b)          green vitriol.

(c)           lime stone.

(d)          quick lime.

Best Answer

(a)

Explanation:  Copper sulphate penta hydrate is a fungicide, when mixed with lime it is called bordeaux and used to control fungus on grapes, melons, and other berries. A dilute solution of copper sulphate is used to treat aquarium fish for various parasitic infections.

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