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Exam Details

JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT

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

Paper pattern & analysis

Filter this paper by subject, topic or subtopic. Every graph updates from the selected questions.

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Showing all 90 questions in this paper.

Subject distribution

Physics
30 Qs
Chemistry
30 Qs
Mathematics
30 Qs

Topic distribution

Mechanics
15 Qs
Algebra
14 Qs
Physical Chemistry
11 Qs
Organic Chemistry
10 Qs
Calculus
10 Qs
Inorganic Chemistry
9 Qs
Electricity
7 Qs
Modern Physics
5 Qs
Coordinate Geometry
4 Qs
Optics
3 Qs
Trigonometry
2 Qs

Subtopic distribution

Heat And Thermodynamics
3 Qs
3D Geometry
3 Qs
Geometrical Optics
3 Qs
Limits Continuity And Differentiability
3 Qs
Atoms And Nuclei
2 Qs
Vector Algebra
2 Qs
Sequences And Series
2 Qs
D And F Block Elements
2 Qs
Motion In A Plane
2 Qs
Rotational Motion
2 Qs
Current Electricity
2 Qs
Some Basic Concepts Of Chemistry
2 Qs

Difficulty distribution

Medium 55 61.1%
Easy 31 34.4%
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 · Physics · Modern Physics · Atoms And Nuclei
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
A
40 minutes
B
60 minutes
C
13 minutes
D
20 minutes
2
2021 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
Which of the following reduction reaction CANNOT be carried out with coke?
A
ZnO \(\to\) Zn
B
Fe2O3 \(\to\) Fe
C
Cu2O \(\to\) Cu
D
Al2O3 \(\to\) Al
3
2021 · Mathematics · Coordinate Geometry · Parabola
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
Let C be the locus of the mirror image of a point on the parabola y2 = 4x with respect to the line y = x. Then the equation of tangent to C at P(2, 1) is :
A
x \(-\) y = 1
B
2x + y = 5
C
x + 3y = 5
D
x + 2y = 4
4
2021 · Physics · Mechanics · Simple Harmonic Motion
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
Amplitude of a mass-spring system, which is executing simple harmonic motion decreases with time. If mass = 500g, Decay constant = 20 g/s then how much time is required for the amplitude of the system to drop to drop to half of its initial value? (ln 2 = 0.693)
A
17.32 s
B
34.65 s
C
0.034 s
D
15.01 s
5
2021 · Chemistry · Physical Chemistry · Surface Chemistry
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
The INCORRECT statements below regarding colloidal solutions is :
A
The flocculating power of Al3+ is more than that of Na+.
B
A colloidal solutions shows Brownian motion of colloidal particles.
C
An ordinary filter paper can stop the flow of colloidal particles.
D
A colloidal solutions shows colligative properties.
6
2021 · Mathematics · Coordinate Geometry · Ellipse
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
If the points of intersections of the ellipse \({{{x^2}} \over {16}} + {{{y^2}} \over {{b^2}}} = 1\) and the
circle x2 + y2 = 4b, b > 4 lie on the curve y2 = 3x2, then b is equal to :
A
12
B
10
C
6
D
5