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Exam Details

JEE MAIN 2021 ONLINE 18TH 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

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

Subtopic distribution

Aldehydes Ketones And Carboxylic Acids
3 Qs
Heat And Thermodynamics
3 Qs
Compounds Containing Nitrogen
3 Qs
Electronic Devices
2 Qs
Binomial Theorem
2 Qs
3D Geometry
2 Qs
Current Electricity
2 Qs
Center Of Mass
2 Qs
Functions
2 Qs
Limits Continuity And Differentiability
2 Qs
Matrices And Determinants
2 Qs
Definite Integration
2 Qs

Difficulty distribution

Medium 56 62.2%
Easy 29 32.2%
Hard 5 5.6%

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 18TH MARCH EVENING SHIFT
The decay of a proton to neutron is :
A
always possible as it is associated only with \(\beta\)+ decay
B
possible only inside the nucleus
C
not possible as proton mass is less than the neutron mass
D
not possible but neutron to proton conversation is possible
2
2021 · Chemistry · Physical Chemistry · Solid State
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
A hard substance melts at high temperature and is an insulator in both solid and in molten state. This solid is most likely to be a/an :
A
Covalent solid
B
Molecular solid
C
Ionic solid
D
Metallic solid
3
2021 · Mathematics · Trigonometry · Height And Distance
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
A pole stands vertically inside a triangular park ABC. Let the angle of elevation of the top of the pole from each corner of the park be \({\pi \over 3}\). If the radius of the circumcircle of \(\Delta\)ABC is 2, then the height of the pole is equal to :
A
\({{1 \over {\sqrt 3 }}}\)
B
2\({\sqrt 3 }\)
C
\({\sqrt 3 }\)
D
\({{{2\sqrt 3 } \over 3}}\)
4
2021 · Physics · Modern Physics · Dual Nature Of Radiation
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
The speed of electrons in a scanning electron microscope is 1 \(\times\) 107 ms-1. If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of :
A
\({1 \over {1837}}\)
B
1837
C
\({\sqrt {1837} }\)
D
\({1 \over {\sqrt {1837} }}\)
5
2021 · Chemistry · Physical Chemistry · Surface Chemistry
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
The charges on the colloidal CdS sol and TiO2 sol are, respectively :
A
positive and positive
B
positive and negative
C
negative and negative
D
negative and positive
6
2021 · Mathematics · Algebra · Mathematical Reasoning
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
If P and Q are two statements, then which of the following compound statement is a tautology?
A
((P \(\Rightarrow\) Q) \(\wedge\) \(\sim\) Q) \(\Rightarrow\) (P \(\wedge\) Q)
B
((P \(\Rightarrow\) Q) \(\wedge\) \(\sim\) Q) \(\Rightarrow\) Q
C
((P \(\Rightarrow\) Q) \(\wedge\) \(\sim\) Q) \(\Rightarrow\) P
D
((P \(\Rightarrow\) Q) \(\wedge\) \(\sim\) Q) \(\Rightarrow\) \(\sim\) P