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Exam Details

JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT

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Questions 90
Duration 180 mins
Package IIT-JEE Main - Previous Year Papers

Paper pattern & analysis

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Showing all 90 questions in this paper.

Subject distribution

Chemistry
30 Qs
Mathematics
30 Qs
Physics
30 Qs

Topic distribution

Algebra
14 Qs
Mechanics
14 Qs
Inorganic Chemistry
12 Qs
Organic Chemistry
10 Qs
Electricity
9 Qs
Calculus
9 Qs
Physical Chemistry
8 Qs
Coordinate Geometry
5 Qs
Modern Physics
5 Qs
Trigonometry
2 Qs
Optics
2 Qs

Subtopic distribution

Sequences And Series
3 Qs
Heat And Thermodynamics
3 Qs
D And F Block Elements
3 Qs
P Block Elements
2 Qs
Ellipse
2 Qs
3D Geometry
2 Qs
Units And Measurements
2 Qs
Current Electricity
2 Qs
Magnetics
2 Qs
Matrices And Determinants
2 Qs
Simple Harmonic Motion
2 Qs
Dual Nature Of Radiation
2 Qs

Difficulty distribution

Medium 59 65.6%
Easy 27 30%
Hard 4 4.4%

Question type distribution

Multiple Choices 60 66.7%
Numerical Answer Type (NAT) 30 33.3%

Syllabus

Full Syllabus

Sample questions from this paper

Questions are selected across the paper subjects wherever the paper contains that variety.

1
2021 · Chemistry · Inorganic Chemistry · P Block Elements
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
The number of S = O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :
A
2, 3 and 4
B
1, 4 and 3
C
2, 4 and 3
D
1, 4 and 4
2
2021 · Mathematics · Trigonometry · Trigonometric Functions And Equations
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
The number of solutions of the equation \({32^{{{\tan }^2}x}} + {32^{{{\sec }^2}x}} = 81,\,0 \le x \le {\pi \over 4}\) is :
A
3
B
1
C
0
D
2
3
2021 · Physics · Modern Physics · Communication Systems
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
A bandwidth of 6 MHz is available for A.M. transmission. If the maximum audio signal frequency used for modulating the carrier wave is not to exceed 6 kHz. The number of stations that can be broadcasted within this band simultaneously without interfering with each other will be __________.
Enter a numerical response
4
2021 · Chemistry · Inorganic Chemistry · Environmental Chemistry
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
The deposition of X and Y on ground surfaces is referred as wet and dry depositions, respectively. X and Y are :
A
X = Ammonium salts, Y = CO2
B
X = SO2, Y = Ammonium salts
C
X = Ammonium salts, Y = SO2
D
X = CO2, Y = SO2
5
2021 · Mathematics · Algebra · Mathematical Reasoning
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
Negation of the statement (p \(\vee\) r) \(\Rightarrow\) (q \(\vee\) r) is :
A
p \(\wedge\) \(\sim\) q \(\wedge\) \(\sim\) r
B
\(\sim\) p \(\wedge\) q \(\wedge\) \(\sim\) 4
C
\(\sim\) p \(\wedge\) q \(\wedge\) r
D
p \(\wedge\) q \(\wedge\) r
6
2021 · Physics · Mechanics · Units And Measurements
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
The diameter of a spherical bob is measured using a vernier callipers. 9 divisions of the main scale, in the vernier callipers, are equal to 10 divisions of vernier scale. One main scale division is 1 mm. The main scale reading is 10 mm and 8th division of vernier scale was found to coincide exactly with one of the main scale division. If the given vernier callipers has positive zero error of 0.04 cm, then the radius of the bob is ___________ \(\times\) 10\(-\)2 cm.
Enter a numerical response