Which metal sulphate, composed of potassium, aluminium, and

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M: +2.00/-0.00

Which metal sulphate, composed of potassium, aluminium, and sulphate ions in the ratio 1 : 1 : 2, plays a role as a flame retardant, a mordant and an astringent ?

[SSC CHSL 31st May 2022 Shift-3 With Answers]

A

Gypsum

B

Potash alum

C

Epsom salts

D

Celestite

EXPLANATION

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