2nd Year Chemistry S-Block Elements
MCQs Chapter No. 2
31. Epsom salt is:
(a) Magnesium sulphate
(b) Ferrous ammonium sulphate
(c) Magnesium ammonium phosphate
(d) Calcium sulphate
Answer:
(a) Magnesium sulphate
32. Plaster of Paris is a hydrate of:
(a) BaSO4
(b) CaSO4
(c) MgSO4
(d) ZnSO4
Answer:
(b) CaSO4
33. Which of the following on heating above 100°C gives plaster of Paris:
(a) Borax
(b) Gypsum
(c) Alum
(d) Calomel
Answer:
(b) Gypsum
34. On heating quick lime with coke in an electric furnace, we get:
(a) Ca and CO2
(b) CaCO3
(c) Ca+CO
(d) CaC2
Answer:
(d) CaC2
35. The substance not likely to contain CaCO3 is :
(a) Dolomite
(b) Marble
(c) Gypsum
(d) Sea shells
Answer:
(c) Gypsum
