Exam Details
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
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Questions
90
Duration
180 mins
Package
IIT-JEE Main - Previous Year Papers
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Topic distribution
Subtopic distribution
Difficulty distribution
90questions
Medium
55
61.1%
Easy
34
37.8%
Hard
1
1.1%
Question type distribution
90questions
Multiple Choices
60
66.7%
Numerical Answer Type (NAT)
30
33.3%
Syllabus
Full Syllabus
Sample questions from this paper
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2021 · Physics · Modern Physics · Atoms And Nuclei
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
For a certain radioactive process the graph between In R and t(sec) is obtained as shown in the figure. Then the value of half life for the unknown radioactive material is approximately :
2021 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
Consider two chemical reactions (A) and (B) that take place during metallurgical process:
(A) \(ZnC{O_{3(s)}}\buildrel \Delta \over \longrightarrow Zn{O_{(s)}} + C{O_{2(g)}}\)
(B) \(2Zn{S_{(s)}} + 3{O_{2(g)}}\buildrel \Delta \over \longrightarrow 2Zn{O_{(s)}} + 2S{O_{2(g)}}\)
The correct option of names given to them respectively is :
(A) \(ZnC{O_{3(s)}}\buildrel \Delta \over \longrightarrow Zn{O_{(s)}} + C{O_{2(g)}}\)
(B) \(2Zn{S_{(s)}} + 3{O_{2(g)}}\buildrel \Delta \over \longrightarrow 2Zn{O_{(s)}} + 2S{O_{2(g)}}\)
The correct option of names given to them respectively is :
2021 · Mathematics · Algebra · Sequences And Series
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
If sum of the first 21 terms of the series \({\log _{{9^{1/2}}}}x + {\log _{{9^{1/3}}}}x + {\log _{{9^{1/4}}}}x + .......\), where x > 0 is 504, then x is equal to
2021 · Physics · Electricity · Magnetic Properties Of Matter
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
At an angle of 30\(^\circ\) to the magnetic meridian, the apparent dip is 45\(^\circ\). Find the true dip :
2021 · Chemistry · Organic Chemistry · Polymers
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
Bakelite is a cross-linked polymer of formaldehyde and :
2021 · Mathematics · Algebra · 3D Geometry
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
Consider the line L given by the equation
\({{x - 3} \over 2} = {{y - 1} \over 1} = {{z - 2} \over 1}\).
Let Q be the mirror image of the point (2, 3, \(-\)1) with respect to L. Let a plane P be such that it passes through Q, and the line L is perpendicular to P. Then which of the following points is on the plane P?
\({{x - 3} \over 2} = {{y - 1} \over 1} = {{z - 2} \over 1}\).
Let Q be the mirror image of the point (2, 3, \(-\)1) with respect to L. Let a plane P be such that it passes through Q, and the line L is perpendicular to P. Then which of the following points is on the plane P?