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Exam Details

JEE MAIN 2021 ONLINE 17TH MARCH MORNING 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
Physics
30 Qs
Mathematics
30 Qs

Topic distribution

Mechanics
17 Qs
Algebra
16 Qs
Organic Chemistry
11 Qs
Physical Chemistry
10 Qs
Inorganic Chemistry
9 Qs
Electricity
7 Qs
Calculus
7 Qs
Coordinate Geometry
5 Qs
Modern Physics
5 Qs
Trigonometry
2 Qs
Optics
1 Qs

Subtopic distribution

Heat And Thermodynamics
4 Qs
Rotational Motion
4 Qs
Matrices And Determinants
3 Qs
Circle
3 Qs
Haloalkanes And Haloarenes
3 Qs
3D Geometry
2 Qs
Vector Algebra
2 Qs
D And F Block Elements
2 Qs
Simple Harmonic Motion
2 Qs
Inverse Trigonometric Functions
2 Qs
Capacitor
2 Qs
Some Basic Concepts Of Chemistry
2 Qs

Difficulty distribution

Medium 47 52.2%
Easy 40 44.4%
Hard 3 3.3%

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 · S Block Elements
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
The correct order of conductivity of ions in water is :
A
K+ > Na+ > Cs+ > Rb+
B
Cs+ > Rb+ > K+ > Na+
C
Na+ > K+ > Rb+ > Cs+
D
Rb+ > Na+ > K+ > Li+
2
2021 · Physics · Mechanics · Heat And Thermodynamics
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
A Carnot's engine working between 400 K and 800 K has a work output of 1200 J per cycle. The amount of heat energy supplied to the engine from the source in each cycle is :
A
2400 J
B
1600 J
C
1800 J
D
3200 J
3
2021 · Mathematics · Algebra · Mathematical Reasoning
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
If the Boolean expression (p \(\Rightarrow\) q) \(\Leftrightarrow\) (q * (\(\sim\)p) is a tautology, then the boolean expression (p * (\(\sim\)q)) is equivalent to :
A
q \(\Rightarrow\) p
B
p \(\Rightarrow\) q
C
p \(\Rightarrow\) \(\sim\) q
D
\(\sim\)q \(\Rightarrow\) p
4
2021 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
The point of intersection and sudden increase in the slope, in the diagram given below, respectively, indicates :

JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Isolation of Elements Question 64 English
A
\(\Delta\)G > 0 and decomposition of the metal oxide
B
\(\Delta\)G < 0 and decomposition of the metal oxide
C
\(\Delta\)G = 0 and reduction of the metal oxide
D
\(\Delta\)G = 0 and melting or boiling point of the metal oxide
5
2021 · Physics · Modern Physics · Communication Systems
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
For VHF signal broadcasting, ___________ km2 of maximum service area will be covered by an antenna tower of height 30 m, if the receiving antenna is placed at ground. Let radius of the earth be 6400 km. (Round off to the Nearest Integer) (Take \(\pi\) as 3.14)
Enter a numerical response
6
2021 · Mathematics · Algebra · Matrices And Determinants
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
If \(A = \left( {\matrix{ 0 & {\sin \alpha } \cr \[{\sin \alpha } & 0 \cr\] } } \right)\) and \(\det \left( {{A^2} - {1 \over 2}I} \right) = 0\), then a possible value of \(\alpha\) is :
A
\({\pi \over 4}\)
B
\({\pi \over 6}\)
C
\({\pi \over 2}\)
D
\({\pi \over 3}\)