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UP POLICE SIUP POLICE SI Hard Mock Set 2Hard GK

UP POLICE SI Mock Test Set 2, Q93: Identify the correct answer for chemical formula of washing soda.

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