Chemistry Mcqs

A 10 volume solution of H2O2 means_______?
  • (A)  10 grams of H2O2 solution liberate 10 mL of O2 at STO
  • (B)  10 gram equivalents of H2O2 liberates 10 mL of O2 at STP
  • (C)  10 litres of H2O2 liberates 19 mL of O2 at STP
  • (D)  1mL of solution of H2O2 liberates 10 mL of O2 at STP
Gypsum is______?
  • (A)  CaSO4
  • (B)  CaSO4.1/2H2O
  • (C)  CaSO4,2H2O
  • (D)  CaSO4.3H2O