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
Electronic Configuration of Calcium (Ca) atom may be written as________?
(A) Ne, 4p2
(B) Ar, 4s2
(C) Ne, 4s2
(D) Kr,4p2
In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?
(A) CaO+ SiO2——> CaSiO3
(B) 2FeS+3O2——–> 2Fe+ SO2
(C) FeSiO3———> FeSiO3
(D) Fe2O3+ 3CO——–> 2Fe+ 3CO2