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Group 5A and Group 6A elements - 2
1.
Specific gravity of H
2
SO
4
at 18oC.
a) 1.833
b) 1.835
c) 1.836
d) 1.834
2.
Cold dilute acids reacts with almost all metals to produce ___________ gas.
a) Hydrogen
b) Sulphur
c) Polonium (Po)
d) Ethylene (C
2
H
4
)
3.
Sulphuric acid as a dehydrating agent with elleyl alcohol forms water and _____________.
a) Carbon disulphide
b) Ethylene (C
2
H
4
)
c) PH
3
Phosphoric
d) V
2
O
5
Vanadium pentaoxide
4.
When benzene reacts with H
2
SO
4
, water and ______________ are formed.
a) Dinitrogenoxide (N
2
O)
b) Brickland & Eydes
c) V
2
O
5
Vanadium pentaoxide
d) Benzene sulphonic acid
5.
In contact process ___________ is used as catalyst for the preparation of H
2
SO
4
.
a) Brickland & Eydes
b) Benzene sulphonic acid
c) Carbon disulphide
d) V
2
O
5
Vanadium pentaoxide
6.
Galena, Zinc blend and cinnabar are important metallic ones of ______________.
a) 620C
o
b) Hydrogen
c) Sulphur
d) Phosphorus
7.
Property of catenation _____________ down in VI group.
a) Decreases
b) Hydrogen
c) Increase
d) 3, Hcl
8.
Orthophosphoric acid changes into pyrophosphoric acid at __________ C
o
.
a) 220C
o
b) 260C
o
c) 230C
o
d) 240C
o
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