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Standard XII
Chemistry
Molecular Speeds - Vrms, Vavg, Vmps
Choose the co...
Question
Choose the correct statement from the following.
A
H
e
gas diffuses
√
2
times more than
O
2
.
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B
O
2
gas diffuses 2 times more than
O
2
.
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C
C
H
4
gas diffuses
√
2
times more than
O
2
.
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D
H
2
diffuses
√
2
times more than He gas.
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Solution
The correct options are
C
C
H
4
gas diffuses
√
2
times more than
O
2
.
D
H
2
diffuses
√
2
times more than He gas.
In option (A),
r
H
e
r
O
2
=
√
M
O
2
M
H
e
=
√
32
4
=
2
√
2
∴
He gas difuses
2
√
2
faster than
O
2
.
In option (B),
r
O
2
r
S
O
2
=
√
M
S
O
2
M
O
2
=
√
64
32
=
√
2
∴
O
2
gas diffuses
√
2
times faster than
S
O
2
.
In option (C),
r
C
H
4
r
O
2
=
√
M
O
2
M
C
H
4
=
√
32
16
=
√
2
∴
C
H
4
gas diffuses
√
2
times more than
O
2
.
In option (D),
r
H
2
r
H
e
=
√
M
H
e
M
H
2
=
√
4
2
=
√
2
∴
H
2
gas diffuses
√
2
times more than He gas.
Suggest Corrections
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Similar questions
Q.
A gas which diffuses 4 times slowly than
H
2
gas is:
Q.
Assertion:
C
O
2
diffuses only from tissue to alveoli and not in the reverse direction.
Reason:
C
O
2
is 10 times more soluble than
O
2
.
Q.
100 ml of
O
2
gas diffuses in 10 s. 100 ml of gas 'X' diffuses in 't' sec. Gas 'X' and time 't' can be respectively:
Q.
Gas
A
diffuses 2 times faster than gas
B
. Ratio of their molecular weights is:
Q.
100 mL of
O
2
gas diffuses in 10 sec. 100 mL of gas
X
diffuses in
t
sec. Gas
X
and time
t
can be:
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