2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.4
Group 5A and 6A Elements
Total MCQs = 47
16. Sulphur is an essential constituent of (MTN 2015)
A. Chlorophyll
B. Plants
C. Proteins
D. All of these
Answer:
D. All of these
17. At 18C the specific gravity of H2SO4 is (MTN 2014)(LHR 2015)
A. 1.891
B. 1.834
C. 2.101
D. 1.74
Answer:
B. 1.834
18. The catalyst used in contact process is
A. Fe2O3
B. V2O5
C. NO
D. Ag2O
Answer:
B. V2O5
19. Arsenic oxides are removed during manufacture of H2SO4 by passing through (SGR 2010)
A. Ferric hydroxide
B. Sodium hydroxide
C. Calcium hydroxide
D. Potassium hydroxide
Answer:
A. Ferric hydroxide
20. SO3 is not absorbed in water directly to from H2SO4 because (GRW 2015)
A. The reaction does not go to completion
B. The reaction is quite slow
C. The reaction is highly exothermic
D. SO3 is insoluble in water
Answer:
C. The reaction is highly exothermic
