Exam Details
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
Review the key details, then start the test when you are ready. You can also open the full package to see related papers.
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.
Topic distribution
Subtopic distribution
Difficulty distribution
90questions
Medium
53
58.9%
Easy
37
41.1%
Question type distribution
90questions
Multiple Choices
60
66.7%
Numerical Answer Type (NAT)
30
33.3%
Syllabus
Full Syllabus
Sample questions from this paper
Questions are selected across the paper subjects wherever the paper contains that variety.
2021 · Chemistry · Physical Chemistry · Gaseous State
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
Which one of the following is the correct PV vs P plot at constant temperature for an ideal gas? (P and V stand for pressure and volume of the gas respectively)
A
B
C
D
2021 · Physics · Mechanics · Heat And Thermodynamics
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
A reversible engine has an efficiency of \({1 \over 4}\). If the temperature of the sink is reduced by 58\(^\circ\)C, its efficiency becomes double. Calculate the temperature of the sink :
2021 · Mathematics · Algebra · Sequences And Series
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
The sum of 10 terms of the series
\({3 \over {{1^2} \times {2^2}}} + {5 \over {{2^2} \times {3^2}}} + {7 \over {{3^2} \times {4^2}}} + ....\) is :
\({3 \over {{1^2} \times {2^2}}} + {5 \over {{2^2} \times {3^2}}} + {7 \over {{3^2} \times {4^2}}} + ....\) is :
2021 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of Al2O3 with cryolite.
Reason (R) : The oxidation state of Al in cryolite is +3.
In the light of the above statements, choose the most appropriate answer from the options given below :
Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of Al2O3 with cryolite.
Reason (R) : The oxidation state of Al in cryolite is +3.
In the light of the above statements, choose the most appropriate answer from the options given below :
2021 · Physics · Modern Physics · Atoms And Nuclei
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
A sample of a radioactive nucleus A disintegrates to another radioactive nucleus B, which in turn disintegrates to some other stable nucleus C. Plot of a graph showing the variation of number of atoms of nucleus B versus time is :
(Assume that at t = 0, there are no B atoms in the sample)
(Assume that at t = 0, there are no B atoms in the sample)
A
B
C
D
2021 · Mathematics · Algebra · 3D Geometry
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
Let the equation of the plane, that passes through the point (1, 4, \(-\)3) and contains the line of intersection of the
planes 3x \(-\) 2y + 4z \(-\) 7 = 0
and x + 5y \(-\) 2z + 9 = 0, be
\(\alpha\)x + \(\beta\)y + \(\gamma\)z + 3 = 0, then \(\alpha\) + \(\beta\) + \(\gamma\) is equal to :
planes 3x \(-\) 2y + 4z \(-\) 7 = 0
and x + 5y \(-\) 2z + 9 = 0, be
\(\alpha\)x + \(\beta\)y + \(\gamma\)z + 3 = 0, then \(\alpha\) + \(\beta\) + \(\gamma\) is equal to :