2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.4
Group 5A and 6A Elements
Total MCQs = 47
36. H3PO3 is:
A. Weak reducing agent
B. Strong reducing agent
C. Strong reducing agent
D. Weak oxidizing agent
Answer:
A. Weak reducing agent
37. In rhombic sulphur, there are ________ atoms in each molecule?
A. 7
B. 8
C. 6
D. 9
Answer:
C. 6
38. In which of the following the oxidation state of S is the highest?
A. SO2
B. SCI2
C. H2SO4
D. H2SO3
Answer:
C. H2SO4
39. Which of these is not an isotope of Phosporus?
A. Red Phosphorus
B. Black Phosphorus
C. White Phosphorus
D. Gray Phosphorus
Answer:
D. Gray Phosphorus
40. Which of the following has allotropic forms:
A. Oxygen
B. Sulpher
C. Oxygen & Sulpher
D. None of these
Answer:
C. Oxygen & Sulpher
