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Byju's Answer
Standard X
Chemistry
Saturated and Unsaturated Hydrocarbons
Which of the ...
Question
Which of the following molecules has a triple bond?
A
C
H
4
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B
C
2
H
4
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C
C
2
H
2
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D
O
3
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Solution
The correct option is
C
C
2
H
2
C
2
H
2
is the correct answer.
C
H
4
⟹
alkane
H
−
H
|
C
|
H
−
H
C
2
H
4
⟹
alkene
H
2
C
=
C
H
2
C
2
H
2
⟹
alkyn
C
H
≡
C
H
O
3
⟹
O
=
O
+
−
O
−
⟷
O
−
O
+
=
O
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Similar questions
Q.
I
. The formulas of ethane, ethyne and ethene are
C
2
H
6
,
C
2
H
4
and
C
2
H
2
.
Because :
I
I
. Alkanes contain only
C
−
C
and
C
−
H
bonds, alkenes may contain triple bonds between carbon atoms and alkynes may contain double bonds between carbon atoms.
Q.
How many sigma and pi bonds are present in
(a)
C
2
H
2
(b)
C
2
H
4
Q.
From the following reaction sequence, calculate the mass of polythene which can be produced by
10
kg of
C
a
C
2
.
C
a
C
2
+
H
2
O
→
C
a
O
+
C
2
H
2
C
2
H
2
→
C
2
H
4
n
C
2
H
4
→
(
C
2
H
4
)
n
(as nearest integer)
Q.
K
p
values for,
C
2
H
4
+
H
2
⇌
C
2
H
6
, is
5
×
10
18
a
t
m
−
1
and
K
p
for,
C
2
H
2
+
H
2
⇌
C
2
H
4
, is
5
×
10
26
a
t
m
−
1
at
50
. If
K
p
for :
2
H
2
+
C
2
H
2
⇌
C
2
H
6
is
x
×
10
45
, then
10
x
is__________.
Q.
Formation of polyethylene from calcium carbide takes place as follows:
C
a
C
2
+
2
H
2
O
⟶
C
a
(
O
H
)
2
+
C
2
H
2
C
2
H
2
+
H
2
⟶
C
2
H
4
n
C
2
H
4
⟶
(
−
C
H
2
−
C
H
2
−
)
n
64 kg of
C
a
C
2
will give ______kg of polyethylene.
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