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UPSC CSE Prelims
2002
Q145 — Science & Technology

UPSC CSE Prelims 2002 Q145 — Science & Technology PYQ with Answer

2002Q145·Science & Technology·Chemistry

Assertion (A): Synthetic detergents can lather well in hard water.

Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water.

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