Examsnet
Unconfined exams practice
Home
Exams
Banking Entrance Exams
CUET Exam Papers
Defence Exams
Engineering Exams
Finance Entrance Exams
GATE Exam Practice
Insurance Exams
International Exams
JEE Exams
LAW Entrance Exams
MBA Entrance Exams
MCA Entrance Exams
Medical Entrance Exams
Other Entrance Exams
Police Exams
Public Service Commission (PSC)
RRB Entrance Exams
SSC Exams
State Govt Exams
Subjectwise Practice
Teacher Exams
SET Exams(State Eligibility Test)
UPSC Entrance Exams
Aptitude
Algebra and Higher Mathematics
Arithmetic
Commercial Mathematics
Data Based Mathematics
Geometry and Mensuration
Number System and Numeracy
Problem Solving
Board Exams
Andhra
Bihar
CBSE
Gujarat
Haryana
ICSE
Jammu and Kashmir
Karnataka
Kerala
Madhya Pradesh
Maharashtra
Odisha
Tamil Nadu
Telangana
Uttar Pradesh
English
Competitive English
Certifications
Technical
Cloud Tech Certifications
Security Tech Certifications
Management
IT Infrastructure
More
About
Careers
Contact Us
Our Apps
Privacy
Test Index
JEE Main 24 June 2022 Shift 2 Solved Paper
Show Para
Hide Para
Share question:
© examsnet.com
Question : 61
Total: 90
120
g
of an organic compound that contains only carbon and hydrogen gives
330
g
of
C
O
2
and
270
g
of water on complete combustion. The percentage of carbon and hydrogen, respectively are
[24-Jun-2022-Shift-2]
25 and 75
40 and 60
60 and 40
75 and 25
Validate
Solution:
C
x
H
y
+
(
x
+
y
4
)
O
2
→
x
C
O
2
+
y
2
H
2
O
From the reaction,
Produced
CO
2
=
x
mol
and produced
H
2
O
=
y
2
mol
Given produced
CO
2
=
330
g
∴
moles of
CO
2
=
330
44
=
30
4
=
x
Also given produced
H
2
O
=
270
gm
∴
Moles of
H
2
O
=
270
18
=
15
=
y
2
.
⇒
y
=
30
∴
x
:
y
=
30
4
:
30
=
1
:
4
Formula of the compound
=
(
CH
4
)
n
∴
Weight of
C
in
(
CH
4
)
n
=
12
n
Weight of
H
in
(
CH
4
)
n
=
4
n
∴
Weight ratio of
C
and
H
=
12
n
:
4
n
=
3
:
1
∴
%
of
C
=
3
4
×
100
=
75
and
%
of
H
=
1
4
×
100
=
25
© examsnet.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
Prev Question
Next Question