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JEE Main 2020 (Online) 8th January Evening Slot

Exam Held on Wed Jan 08 2020 09:30:00 GMT+0000 (Coordinated Universal Time)
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Chemistry

Among the reactions (a) - (d), the reaction(s) that does/do not occur in the bla...
Kjeldahl's method cannot be used to estimate nitrogen for which of the following...
Consider the following plots of rate constant versus $${1 \over T}$$ for four di...
An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydroge...
The increasing order of the atomic radii of the following elements is :-<br> (a)...
Among the compounds A and B with molecular formula C<sub>9</sub>H<sub>18</sub>O<...
The major product [B] in the following sequence of reactions is :- <img src="htt...
A metal (A) on heating in nitrogen gas gives compound B. B on treatment with H<s...
Which of the following compounds is likely to show both Frenkel and Schottky def...
Arrange the following bonds according to their average bond energies in descendi...
For the following Assertion and Reason, the correct option is :<br> <br><br><b>A...
The radius of the second Bohr orbit, in terms of the Bohr radius, a<sub>0</sub>,...
Among (a) – (d) the complexes that can display geometrical isomerism are :<br> (...
The major product in the following reaction is: <img src="https://imagex.cdn.exa...
Two monomers in maltose are :
White Phosphorus on reaction with concentrated NaOH solution in an inert atmosph...
Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A)...
Preparation of Bakelite proceeds via reactions.
The correct order of the calculated spin-only magnetic moments of complexs (A) t...
For the following Assertion and Reason, the correct option is<br> <b>Assertion <...
For an electrochemical cell<br> Sn(s) | Sn<sup>2+</sup> (aq,1M)||Pb<sup>2+</sup>...
NaClO<sub>3</sub> is used, even in spacecrafts, to produce O<sub>2</sub>. The da...
In the following sequence of reactions the maximum number of atoms present in mo...
At constant volume, 4 mol of an ideal gas when heated from 300 K to 500K changes...
Complexes (ML<sub>5</sub>) of metals Ni and Fe have ideal square pyramidal and t...

Mathematics

Let $$\overrightarrow a = \widehat i - 2\widehat j + \widehat k$$ and $$\overri...
The area (in sq. units) of the region<br> {(x,y) $$ \in $$ R<sup>2</sup> : x<sup...
The length of the perpendicular from the origin, on the normal to the curve,<br>...
If $$I = \int\limits_1^2 {{{dx} \over {\sqrt {2{x^3} - 9{x^2} + 12x + 4} }}} $$,...
Let S be the set of all functions ƒ : [0,1] $$ \to $$ R, which are continuous on...
If a line, y = mx + c is a tangent to the circle, (x – 3)<sup>2</sup> + y<sup>2<...
Which of the following statements is a tautology?
If the 10<sup>th</sup> term of an A.P. is $${1 \over {20}}$$ and its 20<sup>th</...
Let ƒ : (1, 3) $$ \to $$ R be a function defined by<br> $$f(x) = {{x\left[ x \ri...
If $$\alpha $$ and $$\beta $$ be the coefficients of x<sup>4</sup> and x<sup>2</...
The system of linear equations<br> $$\lambda $$x + 2y + 2z = 5<br> 2$$\lambda $$...
If $${{\sqrt 2 \sin \alpha } \over {\sqrt {1 + \cos 2\alpha } }} = {1 \over 7}$$...
If $$A = \left( {\matrix{ 2 &amp; 2 \cr 9 &amp; 4 \cr } } \right)$$ ...
The mirror image of the point (1, 2, 3) in a plane is<br> $$\left( { - {7 \over ...
Let S be the set of all real roots of the equation,<br> 3<sup>x</sup>(3<sup>x</s...
The differential equation of the family of curves, x<sup>2</sup> = 4b(y + b), b ...
$$\mathop {\lim }\limits_{x \to 0} {{\int_0^x {t\sin \left( {10t} \right)dt} } \...
The mean and variance of 20 observations are found to be 10 and 4, respectively....
Let A and B be two events such that the probability that exactly one of them occ...
Let $$\alpha = {{ - 1 + i\sqrt 3 } \over 2}$$. <br>If $$a = \left( {1 + \alpha ...
If a hyperbola passes through the point P(10, 16) and it has vertices at (± 6, 0...
Let ƒ(x) be a polynomial of degree 3 such that ƒ(–1) = 10, ƒ(1) = –6, ƒ(x) has a...
The sum, $$\sum\limits_{n = 1}^7 {{{n\left( {n + 1} \right)\left( {2n + 1} \righ...
Let a line y = mx (m &gt; 0) intersect the parabola, y<sup>2</sup> = x at a poin...
The number of 4 letter words (with or without meaning) that can be formed from t...

Physics

As shown in figure, when a spherical cavity (centered at O) of radius 1 is cut o...
In a double slit experiment, at a certain point on the screen the path differenc...
A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along ...
A galvanometer having a coil resistance 100 $$\Omega $$ gives a full scale defle...
A particle of mass m and charge q is released from rest in a uniform electric fi...
A simple pendulum is being used to determine th value of gravitational accelerat...
Two liquids of densities $${\rho _1}$$ an $${\rho _2}$$ ($${\rho _2}$$ = 2$${\rh...
A transverse wave travels on a taut steel wire with a velocity of v when tension...
A shown in the figure, a battery of emf $$\varepsilon $$ is connected to an indu...
A capacitor is made of two square plates each of side 'a' making a very small an...
A very long wire ABDMNDC is shown in figure carrying current I. AB and BC parts ...
A particle of mass m is dropped from a height h above the ground. At the same ti...
A carnot engine having an efficiency of $${1 \over {10}}$$ is being used as a re...
Consider a mixture of n moles of helium gas and 2n moles of oxygen gas (molecule...
A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surf...
An electron (mass m) with initial velocity $$\overrightarrow v = {v_0}\widehat ...
Consider two charged metallic spheres S<sub>1</sub> and S<sub>2</sub> of radii R...
A particle moves such that its position vector $$\overrightarrow r \left( t \rig...
In the given circuit, value of Y is : <img src="https://imagex.cdn.examgoal.net/...
An object is gradually moving away from the focal point of a concave mirror alon...
Three containers C<sub>1</sub>, C<sub>2</sub> and C<sub>3</sub> have water at di...
A ball is dropped from the top of a 100 m high tower on a planet. In the last $$...
The first member of the Balmer series of hydrogen atom has a wavelength of 6561 ...
An asteroid is moving directly towards the centre of the earth. When at a distan...
The series combination of two batteries, both of the same emf 10 V, but differen...

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