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Exam Details

JEE Main 2021 (Online) 26th February Evening Shift

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Questions 90
Duration 60 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
Calculus
11 Qs
Organic Chemistry
11 Qs
Physical Chemistry
10 Qs
Inorganic Chemistry
9 Qs
Modern Physics
6 Qs
Electricity
6 Qs
Coordinate Geometry
3 Qs
Optics
3 Qs
Trigonometry
2 Qs

Subtopic distribution

Simple Harmonic Motion
4 Qs
Aldehydes Ketones And Carboxylic Acids
4 Qs
Isolation Of Elements
3 Qs
Sequences And Series
3 Qs
Application Of Derivatives
3 Qs
Heat And Thermodynamics
3 Qs
Geometrical Optics
3 Qs
Electrostatics
3 Qs
Definite Integration
3 Qs
Limits Continuity And Differentiability
3 Qs
3D Geometry
2 Qs
Electronic Devices
2 Qs

Difficulty distribution

Medium 61 67.8%
Easy 26 28.9%
Hard 3 3.3%

Question type distribution

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

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) 26th February Evening Shift
A radioactive sample is undergoing \(\alpha\) decay. At any time t1, its activity is A and another time t2, the activity is \({A \over 5}\). What is the average life time for the sample?
A
\({{\ln 5} \over {{t_2} - {t_1}}}\)
B
\({{\ln ({t_2} + {t_1})} \over 2}\)
C
\({{{t_1} - {t_2}} \over {\ln 5}}\)
D
\({{{t_2} - {t_1}} \over {\ln 5}}\)
2
2021 · Chemistry · Physical Chemistry · Surface Chemistry
JEE Main 2021 (Online) 26th February Evening Shift
The nature of charge on resulting colloidal particles when FeCl3 is added to excess of hot water is :
A
neutral
B
sometimes positive and sometimes negative
C
positive
D
negative
3
2021 · Mathematics · Trigonometry · Properties Of Triangle
JEE Main 2021 (Online) 26th February Evening Shift
The triangle of maximum area that can be inscribed in a given circle of radius 'r' is :
A
An equilateral triangle having each of its side of length \(\sqrt 3\)r.
B
An equilateral triangle of height \({{2r} \over 3}\).
C
A right angle triangle having two of its sides of length 2r and r.
D
An isosceles triangle with base equal to 2r.
4
2021 · Physics · Modern Physics · Communication Systems
JEE Main 2021 (Online) 26th February Evening Shift
If the highest frequency modulating a carrier is 5 kHz, then the number of AM broadcast stations accommodated in a 90 kHz bandwidth are _________.
Enter a numerical response
5
2021 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE Main 2021 (Online) 26th February Evening Shift
Match List - I with List - II.

List - I List - II
(a) Sodium Carbonate (i) Deacon
(b) Titanium (ii) Castner-Kellner
(c) Chlorine (iii) van-Arkel
(d) Sodium hydroxide (iv) Solvay


Choose the correct answer from the options given below :
A
(a) \(\to\) (iv), (b) \(\to\) (iii), (c) \(\to\) (i), (d) \(\to\) (ii)
B
(a) \(\to\) (iv), (b) \(\to\) (i), (c) \(\to\) (ii), (d) \(\to\) (iii)
C
(a) \(\to\) (iii), (b) \(\to\) (ii), (c) \(\to\) (i), (d) \(\to\) (iv)
D
(a) \(\to\) (i), (b) \(\to\) (iii), (c) \(\to\) (iv), (d) \(\to\) (ii)
6
2021 · Mathematics · Algebra · Mathematical Reasoning
JEE Main 2021 (Online) 26th February Evening Shift
Let F1(A, B, C) = (A \(\wedge\) \(\sim\) B) \(\vee\) [\(\sim\)C \(\wedge\) (A \(\vee\) B)] \(\vee\) \(\sim\) A and
F2(A, B) = (A \(\vee\) B) \(\vee\) (B \(\to\) \(\sim\)A) be two logical expressions. Then :
A
Both F1 and F2 are not tautologies
B
F1 and F2 both are tautologies
C
F1 is not a tautology but F2 is a tautology
D
F1 is a tautology but F2 is not a tautology