2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.2
Block Elements
Total MCQs = 31
11. Oxide used in mountaineer’s breathing equipment is
A. Na2O
B. Na2O2
C. K2O
D. KO2
Answer:
D. KO2
12. The oxides of beryllium are:
A. Acidic
B. Basic
C. Amphoteric
D. Neutral
Answer:
C. Amphoteric
13. The sulphate compound insoluble in water is (SRG 2017) (BWP 2018) (MTN 2019) (FSD 2019 GII)
A. Barium sulphate
B. Sodium sulphate
C. Potassium sulphate
D. Zinc sulphate
Answer:
C. Potassium sulphate
14. Plaster of Paris can be obtained from: (LHR 2014) (GRW 2015)
A. Marble
B. Bauxite
C. Gypsum
D. Limestone
Answer:
A. Marble
15. Which one is more soluble in water? (DGK 2012)
A. Be(OH)2
B. HBO2
C. Ba(OH)2
D. All of these
Answer:
A. Be(OH)2
