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Group 5A and Group 6A elements - 11
1.
Three and five are the common valencies of the group VA elements.
a) True
b) False
2.
Electronegativity of P is greater than N.
a) True
b) False
3.
H
2
S and H
2
SO
3
are reducing agents.
a) False
b) True
4.
2NO
2
620C
o
2NO + O
2
a) True
b) False
5.
Reaction of nitrous acid and Urea will produce N
2
, CO
2
and water.
a) True
b) False
6.
Sb + 3HNO
3
®
H
3
SbO
4
+ 5NO
2
+ H
2
O
a) True
b) False
7.
Moderately dilute nitric acid gives NO
2
while Conc. Nitric acid gives NO. (Nitrous acid).
a) True
b) False
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