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4000 Important General Science MCQ Question & Answer in PDF Download

Q.

The Chemical formula of washing soda is

  • ANa2SO4.10H2O
  • BNaHCO3
  • CNa2CO3 .10H2O
  • DCa(OH)2
Correct Answer : (C)

Na2CO3 .10H2O
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4000 Important General Science MCQ Question & Answer in PDF Download
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