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JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
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Questions
90
Duration
180 mins
Package
IIT-JEE Main - Previous Year Papers
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Subtopic distribution
Difficulty distribution
90questions
Medium
57
63.3%
Easy
32
35.6%
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 27TH JULY EVENING SHIFT
Consider the following statements :
A. Atoms of each element emit characteristics spectrum.
B. According to Bohr's Postulate, an electron in a hydrogen atom, revolves in a certain stationary orbit.
C. The density of nuclear matter depends on the size of the nucleus.
D. A free neutron is stable but a free proton decay is possible.
E. Radioactivity is an indication of the instability of nuclei.
Choose the correct answer from the options given below :
A. Atoms of each element emit characteristics spectrum.
B. According to Bohr's Postulate, an electron in a hydrogen atom, revolves in a certain stationary orbit.
C. The density of nuclear matter depends on the size of the nucleus.
D. A free neutron is stable but a free proton decay is possible.
E. Radioactivity is an indication of the instability of nuclei.
Choose the correct answer from the options given below :
2021 · Chemistry · Physical Chemistry · Solid State
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
Select the correct statements
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic
(C) Amorphous solid are sometimes called pseudo solids.
(D) Amorphous solids soften over a range of temperatures.
(E) Amorphous solids have a definite heat of fusion.
Choose the most appropriate answer from the options given below.
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic
(C) Amorphous solid are sometimes called pseudo solids.
(D) Amorphous solids soften over a range of temperatures.
(E) Amorphous solids have a definite heat of fusion.
Choose the most appropriate answer from the options given below.
2021 · Mathematics · Algebra · 3D Geometry
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
For real numbers \(\alpha\) and \(\beta\) \(\ne\) 0, if the point of intersection of the straight lines
\({{x - \alpha } \over 1} = {{y - 1} \over 2} = {{z - 1} \over 3}\) and \({{x - 4} \over \beta } = {{y - 6} \over 3} = {{z - 7} \over 3}\), lies on the plane x + 2y \(-\) z = 8, then \(\alpha\) \(-\) \(\beta\) is equal to :
\({{x - \alpha } \over 1} = {{y - 1} \over 2} = {{z - 1} \over 3}\) and \({{x - 4} \over \beta } = {{y - 6} \over 3} = {{z - 7} \over 3}\), lies on the plane x + 2y \(-\) z = 8, then \(\alpha\) \(-\) \(\beta\) is equal to :
2021 · Physics · Mechanics · Heat And Thermodynamics
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
Two Carnot engines A and B operate in series such that engine A absorbs heat at T1 and rejects heat to a sink at temperature T. Engine B absorbs half of the heat rejected by Engine A and rejects heat to the sink at T3. When workdone in both the cases is equal, to value of T is :
2021 · Chemistry · Physical Chemistry · Structure Of Atom
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
If the Thompson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been :
2021 · Mathematics · Algebra · Matrices And Determinants
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
Let A and B be two 3 \(\times\) 3 real matrices such that (A2 \(-\) B2) is invertible matrix. If A5 = B5 and A3B2 = A2B3, then the value of the determinant of the matrix A3 + B3 is equal to :