Exam Details
JEE MAIN 2021 ONLINE 27TH JULY MORNING 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
53
58.9%
Easy
32
35.6%
Hard
5
5.6%
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 · Mechanics · Properties Of Matter
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
A body takes 4 min. to cool from 61\(^\circ\) C to 59\(^\circ\) C. If the temperature of the surroundings is 30\(^\circ\) C, the time taken by the body to cool from 51\(^\circ\) C to 49\(^\circ\) C is :
2021 · Chemistry · Inorganic Chemistry · S Block Elements
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R.
Assertion A : Lithium halides are some what covalent in nature.
Reason R : Lithium posses high polarisation capability.
In the light of the above statements, choose the most appropriate answer from the options given below :
Assertion A : Lithium halides are some what covalent in nature.
Reason R : Lithium posses high polarisation capability.
In the light of the above statements, choose the most appropriate answer from the options given below :
2021 · Mathematics · Algebra · 3D Geometry
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
Let the plane passing through the point (\(-\)1, 0, \(-\)2) and perpendicular to each of the planes 2x + y \(-\) z = 2 and x \(-\) y \(-\) z = 3 be ax + by + cz + 8 = 0. Then the value of a + b + c is equal to :
2021 · Physics · Modern Physics · Atoms And Nuclei
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
If 'f' denotes the ratio of the number of nuclei decayed (Nd) to the number of nuclei at t = 0 (N0) then for a collection of radioactive nuclei, the rate of change of 'f' with respect to time is given as :
[\(\lambda\) is the radioactive decay constant]
[\(\lambda\) is the radioactive decay constant]
2021 · Chemistry · Physical Chemistry · Structure Of Atom
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
Given below are two statements :
Statement I : Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom.
Statement II : Bohr's model of hydrogen atom contradicts Heisenberg' uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below :
Statement I : Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom.
Statement II : Bohr's model of hydrogen atom contradicts Heisenberg' uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below :
2021 · Mathematics · Calculus · Definite Integration
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT
The value of \(\mathop {\lim }\limits_{n \to \infty } {1 \over n}\sum\limits_{j = 1}^n {{{(2j - 1) + 8n} \over {(2j - 1) + 4n}}}\) is equal to :