2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.4
Group 5A and 6A Elements
Total MCQs = 47
31. In contact process, the catalyst used for the conversion sulphur dioxide to sulphur trioxide is: (UHS 2011)
A. Magnesium oxide
B. Aluminum oxide
C. Silicon dioxide
D. Vanadium pentaoxide
Answer:
D. Vanadium pentaoxide
32. Which of the following does not occur in Free State?
A. Nitrogen
B. Phosphorous
C. Oxygen
D. Sulpher
Answer:
B. Phosphorous
33. Both O2 and O3 are Oxidizing agents but O3 is preferred because:
A. It is relatively unstable than O2
B. It provides an extra oxygen atom then O2
C. It provides Nacent Oxygen
D. All of above
Answer:
D. All of above
34. Formula of laughing gas is
A. NO
B. NH3
C. N2O
D. N2O3
Answer:
C. N2O
35. H2SO4 is used in industries of.
A. Paint
B. Textile
C. Rubber
D. Aluminum
Answer:
A. Paint
