Gypsum is chemically __________________ ?

Related Mcqs:

Which of the following is an endothermic reaction ?

A. Absorption of SO3 in 98% H2SO4 B. C + H2O = CO + H2 C. Thermal dissociation of iron pyrites D. Both B. and C....

Which of the following is not an abrasive material ?

A. Bakelite B. Pumice C. Corundum D. Carborundum...

Pick out the wrong statement?

A. Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98% B. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide C. Vitriol oil is nothing but technical sulphuric acid D. Decomposition of sulphuric acid on heating does not start before its boiling...

Calcareous & argillaceous materials are used in the manufacture of ___________________?

A. Lead B. Cement C. Carbon disulphide D. None of these...

Pick out the exothermic reaction out of the following ?

A. C + H2O = CO + H2 B. CaC2 + H2O = Ca(OH)2 + C2H2 C. MgCO3 = MgO + CO2 D. All (A), B. and (C)...