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Exam Details

JEE MAIN 2021 ONLINE 25TH JULY 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

Chemistry
30 Qs
Physics
30 Qs
Mathematics
30 Qs

Topic distribution

Algebra
20 Qs
Mechanics
13 Qs
Organic Chemistry
11 Qs
Inorganic Chemistry
10 Qs
Physical Chemistry
9 Qs
Electricity
8 Qs
Modern Physics
7 Qs
Calculus
6 Qs
Coordinate Geometry
2 Qs
Trigonometry
2 Qs
Optics
2 Qs

Subtopic distribution

Binomial Theorem
5 Qs
Current Electricity
3 Qs
Dual Nature Of Radiation
3 Qs
D And F Block Elements
3 Qs
Quadratic Equation And Inequalities
3 Qs
Vector Algebra
3 Qs
Motion In A Straight Line
3 Qs
Compounds Containing Nitrogen
3 Qs
Heat And Thermodynamics
2 Qs
Atoms And Nuclei
2 Qs
Aldehydes Ketones And Carboxylic Acids
2 Qs
Differential Equations
2 Qs

Difficulty distribution

Medium 48 53.3%
Easy 40 44.4%
Hard 2 2.2%

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 · Physical Chemistry · Surface Chemistry
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
Match List I with List II :

List-I
Example of colloids		 List - II
Classification
(a) Cheese (i) dispersion of liquid in liquid
(b) Pumice stone (ii) dispersion of liquid in gas
(c) Hair cream (iii) dispersion of gas in solid
(d) Cloud (iv) dispersion of liquid in solid

Choose the most appropriate answer from the options given below
A
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
B
(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
C
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
D
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
2
2021 · Physics · Mechanics · Heat And Thermodynamics
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
A heat engine has an efficiency of \({1 \over 6}\). When the temperature of sink is reduced by 62\(^\circ\)C, its efficiency get doubled. The temperature of the source is :
A
124\(^\circ\)C
B
37\(^\circ\)C
C
62\(^\circ\)C
D
99\(^\circ\)C
3
2021 · Mathematics · Algebra · Mathematical Reasoning
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
Consider the statement "The match will be played only if the weather is good and ground is not wet". Select the correct negation from the following :
A
The match will not be played and weather is not good and ground is wet.
B
If the match will not be played, then either weather is not good or ground is wet.
C
The match will be played and weather is not good or ground is wet.
D
The match will not be played or weather is good and ground is not wet.
4
2021 · Chemistry · Organic Chemistry · Polymers
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
A biodegradable polyamide can be made from :
A
Glycine and isoprene
B
Hexamethylene diamine and adipic acid
C
Glycine and aminocaproic acid
D
Styrene and caproic acid
5
2021 · Physics · Modern Physics · Communication Systems
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
A message signal of frequency 20 kHz and peak voltage of 20 volt is used to modulate a carrier wave of frequency 1 MHz and peak voltage of 20 volt. The modulation index will be :
Enter a numerical response
6
2021 · Mathematics · Coordinate Geometry · Ellipse
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
If a tangent to the ellipse x2 + 4y2 = 4 meets the tangents at the extremities of it major axis at B and C, then the circle with BC as diameter passes through the point :
A
\((\sqrt 3 ,0)\)
B
\((\sqrt 2 ,0)\)
C
(1, 1)
D
(\(-\)1, 1)