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JEE Main 2020 (Online) 9th January Evening Slot

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

The first and second ionisation enthalpies of a metal are 496 and 4560 kJ mol<su...
A mixture of gases O<sub>2</sub>, H<sub>2</sub> and CO are taken in a closed ves...
Which of the following reactions will not produce a racemic product?
In the following reaction A is : <img src="https://imagex.cdn.examgoal.net/7k9k2...
Which polymer has 'chiral' monomer(s) ?
Among the statements (a)-(d) the correct ones are:<br><br> (a) Lithium has the h...
Biochemical Oxygen Demand (BOD) is the amount of oxygen required (in ppm):
The correct order of the spin-only magnetic moments of the following complexes i...
Amongst the following, the form of water with the lowest ionic conductance at 29...
Which of the following has the shortest C-Cl bond?
In the figure shown below reactant A (represented by square) is in equilibrium w...
The decreasing order of basicity of the following amines is : <img src="https://...
The solubility product of Cr(OH)<sub>3</sub> at 298 K is 6.0 × 10<sup>–31</sup>....
5 g of zinc is treated separately with an excess of<br><br> (a) dilute hydrochlo...
Consider the following reactions,<br><br> <img src="https://imagex.cdn.examgoal....
A, B and C are three biomolecules. The results of the tests performed on them ar...
The reaction of H<sub>3</sub>N<sub>3</sub>B<sub>3</sub>Cl<sub>3</sub> (A) with L...
The isomer(s) of [Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>] that has/have a ...
The number of sp<sup>2</sup> hybrid orbitals in a molecule of benzene is :
The true statement amongst the following is:
A cylinder containing an ideal gas (0.1 mol of 1.0 dm<sup>3</sup>) is in thermal...
A sample of milk splits after 60 min. at 300 K and after 40 min. at 400 K when t...
The sum of the total number of bonds between chromium and oxygen atoms in chroma...
10.30 mg of O<sub>2</sub> is dissolved into a liter of sea water of density 1.03...
Consider the following reactions<br><br> <img src="https://imagex.cdn.examgoal.n...

Mathematics

Let [t] denote the greatest integer $$ \le $$ t and $$\mathop {\lim }\limits_{x ...
The following system of linear equations<br> 7x + 6y – 2z = 0<br> 3x + 4y + 2z =...
Let a, b $$ \in $$ R, a $$ \ne $$ 0 be such that the equation, ax<sup>2</sup> – ...
A random variable X has the following probability distribution :<br><br> <style ...
If $$x = 2\sin \theta - \sin 2\theta $$ and $$y = 2\cos \theta - \cos 2\theta ...
The length of the minor axis (along y-axis) of an ellipse in the standard form i...
Given : $$f(x) = \left\{ {\matrix{ {x\,\,\,\,\,,} &amp; {0 \le x &lt; {1 \ove...
If $$x = \sum\limits_{n = 0}^\infty {{{\left( { - 1} \right)}^n}{{\tan }^{2n}}\...
If A = {x $$ \in $$ R : |x| &lt; 2} and B = {x $$ \in $$ R : |x – 2| $$ \ge $$ 3...
If 10 different balls are to be placed in 4 distinct boxes at random, then the p...
If one end of a focal chord AB of the parabola y<sup>2</sup> = 8x is at $$A\left...
Let a function ƒ : [0, 5] $$ \to $$ R be continuous, ƒ(1) = 3 and F be defined a...
If $${{dy} \over {dx}} = {{xy} \over {{x^2} + {y^2}}}$$; y(1) = 1; then a value ...
If $$\int {{{d\theta } \over {{{\cos }^2}\theta \left( {\tan 2\theta + \sec 2\t...
If p $$ \to $$ (p $$ \wedge $$ ~q) is false, then the truth values of p and q ar...
If z be a complex number satisfying |Re(z)| + |Im(z)| = 4, then |z| cannot be
Let a – 2b + c = 1.<br><br> If $$f(x)=\left| {\matrix{ {x + a} &amp; {x + 2} ...
In the expansion of $${\left( {{x \over {\cos \theta }} + {1 \over {x\sin \theta...
The number of terms common to the two A.P.'s 3, 7, 11, ....., 407 and 2, 9, 16, ...
Let $$\overrightarrow a $$, $$\overrightarrow b $$ and $$\overrightarrow c $$ be...
Let a<sub>n</sub> be the n<sup>th</sup> term of a G.P. of positive terms.<br><br...
Let ƒ and g be differentiable functions on R such that fog is the identity funct...
If the distance between the plane, 23x – 10y – 2z + 48 = 0 and the plane<br><br>...
If C<sub>r</sub> $$ \equiv $$ <sup>25</sup>C<sub>r</sub> and<br> C<sub>0</sub> +...
If the curves, x<sup>2</sup> – 6x + y<sup>2</sup> + 8 = 0 and <br>x<sup>2</sup> ...

Physics

A wire of length L and mass per unit length 6.0 × 10<sup>–3</sup> kgm<sup>–1</su...
A spring mass system (mass m, spring constant k and natural length $$l$$) rest i...
A rod of length L has non-uniform linear mass <br>density given by $$\rho $$(x) ...
An electron gun is placed inside a long solenoid of radius R on its axis. The so...
A plane electromagnetic wave is propagating along the direction $${{\widehat i +...
A small spherical droplet of density d is floating exactly half immersed in a li...
A small circular loop of conducting wire has radius a and carries current I. It ...
The current i in the network is : <img src="https://imagex.cdn.examgoal.net/7k9k...
In LC circuit the inductance L = 40 mH and <br>capacitance C = 100 $$\mu $$F. If...
There is a small source of light at some depth below the surface of water (refra...
Two gases-argon (atomic radius 0.07 nm, atomic weight 40) and xenon (atomic radi...
A particle of mass m is projected with a speed u from the ground at an angle $$\...
A particle starts from the origin at t = 0 with an <br>initial velocity of 3.0 $...
The energy required to ionise a hydrogen like ion in its ground state is 9 Rydbe...
Two identical capacitors A and B, charged to the same potential 5V are connected...
A uniformly thick wheel with moment of inertia I and radius R is free to rotate ...
Planet A has mass M and radius R. Planet B has half the mass and half the radius...
For the four sets of three measured physical quantities as given below. Which of...
Two steel wires having same length are suspended from a ceiling under the same l...
An electron of mass m and magnitude of charge |e| initially at rest gets acceler...
Starting at temperature 300 K, one mole of an <br>ideal diatomic gas ($$\gamma $...
In a meter bridge experiment S is a standard resistance. R is a resistance wire....
The circuit shown below is working as a 8 V dc regulated voltage source. When 12...
In a Young's double slit experiment 15 fringes are observed on a small portion o...
An electric field $$\overrightarrow E = 4x\widehat i - \left( {{y^2} + 1} \righ...

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