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SSC 10+2SSC 10+2 Hard Mock Set 4Hard GK

SSC 10+2 Mock Test Set 4, Q93: Identify the correct answer for chemical formula of washing soda.

A. NaCl
B. Na2CO3·10H2O
C. NaHCO3
D. CaCO3
Correct Answer: B. Na2CO3·10H2O
Explanation: Washing soda is sodium carbonate decahydrate. Category: SSC 10+2. Set: 4.
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