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DELHI POLICEDELHI POLICE Hard Mock Set 1Hard GK

DELHI POLICE Mock Test Set 1, Q93: Identify the correct answer for chemical formula of washing soda.

A. CaCO3
B. NaCl
C. Na2CO3·10H2O
D. NaHCO3
Correct Answer: C. Na2CO3·10H2O
Explanation: Washing soda is sodium carbonate decahydrate. Category: DELHI POLICE. Set: 1.
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