Exam Details
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
Review the key details, then start the test when you are ready. You can also open the full package to see related papers.
Questions
75
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
75questions
Medium
51
68%
Easy
23
30.7%
Hard
1
1.3%
Question type distribution
75questions
Multiple Choices
60
80%
Numerical Answer Type (NAT)
15
20%
Syllabus
Full Syllabus
Sample questions from this paper
Questions are selected across the paper subjects wherever the paper contains that variety.
2020 · Physics · Mechanics · Waves
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
A stationary observer receives sound from two identical tuning forks, one of which approaches
and the other one recedes with the same speed (much less than the speed of sound). The
observer hears 2 beats/sec. The oscillation frequency of each tuning fork is v0
= 1400 Hz and the
velocity of sound in air is 350 m/s. The speed of each tuning fork is close to :
2020 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is :
2020 · Mathematics · Algebra · Matrices And Determinants
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
Let A = [aij] and B = [bij] be two 3 × 3 real matrices such that bij = (3)(i+j-2)aji, where i, j = 1, 2, 3.
If the determinant of B is 81, then the determinant of A is:
2020 · Physics · Mechanics · Heat And Thermodynamics
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
Two ideal Carnot engines operate in cascade (all heat given up by one engine is used by the other
engine to produce work) between temperature, T1
and T2
. The temperature of the hot reservoir of
the first engine is T1
and the temperature of the cold reservoir of the second engine is T2
. T is
temperature of the sink of first engine which is also the source for the second which is also the
source for the second engine. How is T related to T1
and T2
. If both engines perform equal amount
of work?
2020 · Chemistry · Physical Chemistry · Gaseous State
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
Identify the correct labels of A,B and C in the following graph from the options given below :
Root mean square speed (Vrms); most probable speed (Vmp); Average speed (Vav)
Root mean square speed (Vrms); most probable speed (Vmp); Average speed (Vav)
2020 · Mathematics · Algebra · Sequences And Series
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
If the sum of the first 40 terms of the series,
3 + 4 + 8 + 9 + 13 + 14 + 18 + 19 + ..... is (102)m, then m is equal to :
3 + 4 + 8 + 9 + 13 + 14 + 18 + 19 + ..... is (102)m, then m is equal to :