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UP POLICE CONSTABLEUP POLICE CONSTABLE Hard Mock Set 4Hard GK

UP POLICE CONSTABLE Mock Test Set 4, Q43: 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: UP POLICE CONSTABLE. Set: 4.
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