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## JEE Main 2021 (Online) 24th February Morning Shift

Exam Held on Wed Feb 24 2021 03:30:00 GMT+0000 (Coordinated Universal Time)
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## Chemistry

The electrode potential of M<sup>2+</sup>/M of 3d-series elements shows positive...
Which of the following reagent is used for the following reaction ?<br><br> <img...
The gas released during anaerobic degradation of vegetation may lead to :
Which of the following are isostructural pairs ?<br><br> A. $$SO_4^{2 - }$$ and ...
Consider the elements Mg, Al, S, P and Si, the correct increasing order of their...
Out of the following, which type of interaction is reponsible for the stabilisat...
The major components in "Gun Metal” are :
Match <b>List I</b> with <b>List II</b>.<br><br> <style type="text/css"> .tg {b...
Which of the following compound gives pink colour on reaction with phthalic anhy...
(A) HOCI + H<sub>2</sub>O<sub>2</sub> → H<sub>3</sub>O<sup>+</sup> + Cl<sup>-</s...
Given below are two statements :<br><br> <b>Statement I:</b> Colourless cupric m...
Which of the following ore is concentrated using group 1 cyanide salt ?
In the following reaction the reason why meta-nitro product also formed is :<br>...
What is the major product formed by HI on reaction with<br><br> <img src="https:...
Al<sub>2</sub>O<sub>3</sub> was leached with alkali to get X. The solution of X ...
'A' and 'B' in the following reactions are : <br/><br/><img src="https://imagex....
Identify products A and B. <br/><br/><img src="https://imagex.cdn.examgoal.net/1...
In Freundlich adsorption isotherm, slope of AB line is :<br><br> <img src="https...
What is the final product (major) 'A' in the given reaction ?<br><br> <img src="...
The product formed in the first step of the reaction of<br><br> <img src="https:...
Number of amphoteric compounds among the following is ________.<br> (A) BeO<br> ...
The coordination number of an atom in a body-centered cubic structure is _______...
The stepwise formation of $${\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]^{2... A proton and a Li<sup>3+</sup> nucleus are accelerated by the same potential. If... At 1990 K and 1 atm pressure, there are equal number of Cl<sub>2</sub>, molecule... When 9.45 g of CICH<sub>2</sub>COOH is added to 500 mL of water, its freezing po... 4.5 g of compound A (MW = 90) was used to make 250 mL of its aqueous solution. T... The reaction of sulphur in alkaline medium is given below:<br><br> <img src="htt... For the reaction A<sub>(g)</sub>$$ \to $$B<sub>(g)</sub> the value of the equi... Gaseous cyclobutene isomerises to butadiene in a first order process which has a... ## Mathematics If$$\int {{{\cos x - \sin x} \over {\sqrt {8 - \sin 2x} }}} dx = a{\sin ^{ - 1}...
The equation of the plane passing through the point (1, 2, -3) and perpendicular...
If f : R $$\to$$ R is a function defined by f(x)= [x - 1] $$\cos \left( {{{2x ... The distance of the point (1, 1, 9) from the point of intersection of the line ... The population P = P(t) at time 't' of a certain species follows the differentia... Let f : R → R be defined as f (x) = 2x – 1 and g : R - {1} → R be defined as g(x... The function <br>f(x) =$${{4{x^3} - 3{x^2}} \over 6} - 2\sin x + \left( {2x - ...
$$\mathop {\lim }\limits_{x \to 0} {{\int\limits_0^{{x^2}} {\left( {\sin \sqrt t... The value of <br>-<sup>15</sup>C<sub>1</sub> + 2.<sup>15</sup>C<sub>2</sub> – 3.... A scientific committee is to be formed from 6 Indians and 8 foreigners, which in... A man is walking on a straight line. The arithmetic mean of the reciprocals of t... Two vertical poles are 150 m apart and the height of one is three times that of ... Let p and q be two positive numbers such that p + q = 2 and p<sup>4</sup>+q<sup>... The area (in sq. units) of the part of the circle x<sup>2</sup> + y<sup>2</sup> ... If the tangent to the curve y = x<sup>3</sup> at the point P(t, t<sup>3</sup>) m... If$${e^{\left( {{{\cos }^2}x + {{\cos }^4}x + {{\cos }^6}x + ...\infty } \right...
An ordinary dice is rolled for a certain number of times. If the probability of ...
The locus of the mid-point of the line segment joining the focus of the parabola...
The system of linear equations <br>3x - 2y - kz = 10 <br>2x - 4y - 2z = 6 <br>x+...
The statement among the following that is a tautology is :
Let P = $$\left[ {\matrix{ 3 &amp; { - 1} &amp; { - 2} \cr 2 &amp; 0 &am... The minimum value of$$\alpha $$for which the <br>equation$${4 \over {\sin x}}...
If the least and the largest real values of a, for which the <br>equation z + $$... Let three vectors$$\overrightarrow a ,\overrightarrow b $$and$$\overrightarro...
$$\mathop {\lim }\limits_{n \to \infty } \tan \left\{ {\sum\limits_{r = 1}^n {{{... Let &nbsp;A = {n$$ \in $$N: n is a 3-digit number}<br> &nbsp;&nbsp;&nbsp;&nbsp;&... If one of the diameters of the circle x<sup>2</sup> + y<sup>2</sup> - 2x - 6y + ... If$$\int\limits_{ - a}^a {\left( {\left| x \right| + \left| {x - 2} \right|} \r...
Let M be any 3 $$\times$$ 3 matrix with entries from the set {0, 1, 2}. The ma...
Let B<sub>i</sub> (i = 1, 2, 3) be three independent events in a sample space. T...

## Physics

A cube of side 'a' has point charges +Q located at each of its vertices except a...
In the given figure, a mass M is attached to a horizontal spring which is fixed ...
A current through a wire depends on time as <br><br>i = $$\alpha$$<sub>0</sub>t ...
Match List I with List II.<br><br><table> <thead> <tr> <th></th> <th>L...
n mole of a perfect gas undergoes a cyclic process ABCA (see figure) consisting ...
Each side of a box made of metal sheet in cubic shape is 'a' at room temperature...
A cell E<sub>1</sub> of emf 6V and internal resistance 2$$\Omega$$ is connected ...
The focal length f is related to the radius of curvature r of the spherical conv...
In a Young's double slit experiment, the width of the one of the slit is three t...
Four identical particles of equal masses 1 kg made to move along the circumferen...
Consider two satellites S<sub>1</sub> and S<sub>2</sub> with periods of revoluti...
If Y, K and $$\eta$$ are the values of Young's modulus, bulk modulus and modulu...
If the velocity-time graph has the shape AMB, what would be the shape of the cor...
In the given figure, the energy levels of hydrogen atom have been shown along wi...
The work done by a gas molecule in an isolated system is <br/><br/>given by, $$W... Two stars of masses m and 2m at a distance d rotate about their common centre of... If an emitter current is changed by 4 mA, the collector current changes by 3.5 m... Two equal capacitors are first connected in series and then in parallel. The rat... Moment of inertia (M. I.) of four bodies, having same mass and radius, are repor... An unpolarised light beam is incident on the polarizer of a polarization experim... A ball with a speed of 9 m/s collides with another identical ball at rest. After... An audio signal v<sub>m</sub> = 20 sin 2$$\pi$$(1500t) amplitude modulates a car... An electromagnetic wave of frequency 5 GHz, is travelling in a medium whose rela... A hydraulic press can lift 100 kg when a mass 'm' is placed on the smaller pisto... An inclined plane is bent in such a way that the vertical cross-section is given... A common transistor radio set requires 12 V (D.C.) for its operation. The D.C. s... The coefficient of static friction between a wooden block of mass 0.5 kg and a v... A resonance circuit having inductance and resistance 2$$\times$$10<sup>$$-4<...
In connection with the circuit drawn below, the value of current flowing through...
Given below are two statements : <br><br>Statement I : Two photons having equal ...

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