2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.4
Group 5A and 6A Elements
Total MCQs = 47
21. Which of the following statement is incorrect (DGK 2014) (FSD, GRW 2015)
A. H2SO4 acts as a strong oxidizing agent
B. H2SO4 acts as a strong reducing agent
C. H2SO4 acts as a dehydrating agent
D. H2SO4 acts as a sulphonating agent
Answer:
B. H2SO4 acts as a strong reducing agent
22. Out of all the elements of group VA, the highest ionization energy is possessed by. (BWP 2017) (MTN 2016, 2019)
A. N
B. P
C. Sb
D. Bi
Answer:
A. N
23. Among group VA elements, the most electronegatice elements is (FSD 2017) (DGK 2019)
A. Sb
B. N
C. P
D. As
Answer:
B. N
24. Oxidation of NO in air produces (SWL 2015) (LHR 2016) (RWP 2015, 2017) (MTN, SGD 2018) (GRW 2019)
A. N2O
B. N2O3
C. N2O4
D. N2O5
Answer:
C. N2O4
25. The brown gas formed, when metal reduces HNO3 to (AJK 2017) (RWP 2018) (MTN 2018 GII) (FSD 2019) (GRW 2019 GII)
A. N2O5
B. N2O3
C. NO2
D. NO
Answer:
C. NO2
