Exam Details
JEE Main 2021 (Online) 26th February Evening Shift
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Questions
90
Duration
60 mins
Package
IIT-JEE Main - Previous Year Papers
Paper pattern & analysis
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Topic distribution
Subtopic distribution
Difficulty distribution
90questions
Medium
61
67.8%
Easy
26
28.9%
Hard
3
3.3%
Question type distribution
90questions
Multiple Choices
60
66.7%
Numerical Answer Type (NAT)
30
33.3%
Sample questions from this paper
Questions are selected across the paper subjects wherever the paper contains that variety.
2021 · Physics · Modern Physics · Atoms And Nuclei
JEE Main 2021 (Online) 26th February Evening Shift
A radioactive sample is undergoing \(\alpha\) decay. At any time t1, its activity is A and another time t2, the activity is \({A \over 5}\). What is the average life time for the sample?
2021 · Chemistry · Physical Chemistry · Surface Chemistry
JEE Main 2021 (Online) 26th February Evening Shift
The nature of charge on resulting colloidal particles when FeCl3 is added to excess of hot water is :
2021 · Mathematics · Trigonometry · Properties Of Triangle
JEE Main 2021 (Online) 26th February Evening Shift
The triangle of maximum area that can be inscribed in a given circle of radius 'r' is :
2021 · Physics · Modern Physics · Communication Systems
JEE Main 2021 (Online) 26th February Evening Shift
If the highest frequency modulating a carrier is 5 kHz, then the number of AM broadcast stations accommodated in a 90 kHz bandwidth are _________.
Enter a numerical response
2021 · Chemistry · Inorganic Chemistry · Isolation Of Elements
JEE Main 2021 (Online) 26th February Evening Shift
Match List - I with List - II.
Choose the correct answer from the options given below :
| List - I | List - II | ||
|---|---|---|---|
| (a) | Sodium Carbonate | (i) | Deacon |
| (b) | Titanium | (ii) | Castner-Kellner |
| (c) | Chlorine | (iii) | van-Arkel |
| (d) | Sodium hydroxide | (iv) | Solvay |
Choose the correct answer from the options given below :
2021 · Mathematics · Algebra · Mathematical Reasoning
JEE Main 2021 (Online) 26th February Evening Shift
Let F1(A, B, C) = (A \(\wedge\) \(\sim\) B) \(\vee\) [\(\sim\)C \(\wedge\) (A \(\vee\) B)] \(\vee\) \(\sim\) A and
F2(A, B) = (A \(\vee\) B) \(\vee\) (B \(\to\) \(\sim\)A) be two logical expressions. Then :
F2(A, B) = (A \(\vee\) B) \(\vee\) (B \(\to\) \(\sim\)A) be two logical expressions. Then :