JEE Main 2020 (Online) 6th September Evening Slot

Paper was held on
Sun, Sep 6, 2020 9:30 AM

## Chemistry

Which one of the following statements is not
true?

View Question Match the following compounds (Column-I) with
their uses (Column-II) :
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View Question The reaction of NO with N2O4 at 250 K gives :

View Question The correct match between Item - I and Item - II
is :
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View Question The IUPAC name of the following compound is :

View Question Reaction of an inorganic sulphite X with dilute
H2SO4 generates compound Y. Reaction of Y
with NaOH gives X. Further, th

View Question Which of the following compounds can be
prepared in good yield by Gabriel phthalimide
synthesis?

View Question Mischmetal is an alloy consisting mainly of :

View Question The average molar mass of chlorine is
35.5 g mol–1. The ratio of 35Cl to 37Cl in naturally
occuring chlorine is close to

View Question A crystal is made up of metal ions 'M1' and 'M2'
and oxide ions. Oxide ions form a ccp lattice
structure. The cation 'M1

View Question The correct match between Item-I (starting
material) and Item-II (reagent) for the
preparation of benzaldehyde is :
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View Question For a reaction,
4M(s) + nO2(g) $$ \to $$ 2M2On(s)
the free energy change is plotted as a function
of temperature. The te

View Question For the given cell :
Cu(s) | Cu2+(C1M) || Cu2+(C2M) | Cu(s)
change in Gibbs energy ($$\Delta $$G) is negative, if :

View Question A set of solutions is prepared using 180 g of
water as a solvent and 10 g of different nonvolatile solutes A, B and C. T

View Question The value of KC is 64 at 800 K for the reaction
N2(g) + 3H2(g) ⇌ 2NH3(g)
The value of KC for the following reaction is :

View Question The element that can be refined by distillation
is :

View Question Match the following :
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View Question The increasing order of the boiling points of
the major products A, B and C of the following
reactions will be :

View Question For a d4 metal ion in an octahedral field, the
correct electronic configuration is :

View Question Dihydrogen of high purity (> 99.95%) is
obtained through :

View Question A solution of phenol in chloroform when treated
with aqueous NaOH gives compound P as a
major product. The mass percenta

View Question For Freundlich adsorption isotherm, a plot of
log (x/m) (y-axis) and log p (x-axis) gives a
straight line. The intercept

View Question If the solubility product of AB2 is 3.20 $$ \times $$ 10–11 M3,
then the solubility of AB2 in pure water is
_____ $$ \ti

View Question The atomic number of Unnilunium is _______.

View Question The rate of a reaction decreased by 3.555
times when the temperature was changed
from 40oC to 30oC. The activation energ

View Question ## Mathematics

If the normal at an end of a latus rectum of an
ellipse passes through an extremity of the
minor axis, then the eccentri

View Question If $$\alpha $$ and $$\beta $$ are the roots of the equation
2x(2x + 1) = 1, then $$\beta $$ is equal to :

View Question If $$y = \left( {{2 \over \pi }x - 1} \right) cosec\,x$$ is the solution of the
differential equation, $${{dy} \over {d

View Question The probabilities of three events A, B and C are
given by P(A) = 0.6, P(B) = 0.4 and P(C) = 0.5.
If P(A$$ \cup $$B) = 0.

View Question The centre of the circle passing through the
point (0, 1) and touching the parabola y = x2 at the point (2, 4) is :

View Question The common difference of the A.P. b1, b2, … , bm
is 2 more than the common difference of A.P. a1, a2, …, an. If a40 =

View Question Let $$\theta = {\pi \over 5}$$ and $$A = \left[ {\matrix{
{\cos \theta } & {\sin \theta } \cr
{ - \sin \th

View Question The angle of elevation of the summit of a
mountain from a point on the ground is 45°.
After climbing up one km towards t

View Question If the constant term in the binomial expansion
of $${\left( {\sqrt x - {k \over {{x^2}}}} \right)^{10}}$$ is 405, then

View Question The set of all real values of $$\lambda $$ for which the
function
$$f(x) = \left( {1 - {{\cos }^2}x} \right)\left( {\lam

View Question Let f : R $$ \to $$ R be a function defined by f(x) = max {x, x2}. Let S denote the set of all points in R, where f is n

View Question Consider the statement : ‘‘For an integer n, if n3 – 1 is even, then n is odd.’’ The contrapositive statement of this st

View Question For all twice differentiable functions f : R $$ \to $$ R,
with f(0) = f(1) = f'(0) = 0

View Question If the tangent to the curve, y = f (x) = xloge x,
(x > 0) at a point (c, f(c)) is parallel to the
line-segment joinin

View Question The integral $$\int\limits_1^2 {{e^x}.{x^x}\left( {2 + {{\log }_e}x} \right)} dx$$ equals :

View Question For a suitably chosen real constant a, let a
function, $$f:R - \left\{ { - a} \right\} \to R$$ be defined by
$$f(x) = {

View Question Let z = x + iy be a non-zero complex number
such that $${z^2} = i{\left| z \right|^2}$$, where i = $$\sqrt { - 1} $$ , t

View Question The area (in sq. units) of the region enclosed
by the curves y = x2 – 1 and y = 1 – x2 is equal to :

View Question A plane P meets the coordinate axes at A, B
and C respectively. The centroid of $$\Delta $$ABC is
given to be (1, 1, 2).

View Question Let L denote the line in the xy-plane with x and
y intercepts as 3 and 1 respectively. Then the
image of the point (–1,

View Question The sum of distinct values of $$\lambda $$ for which the
system of equations$$\left( {\lambda - 1} \right)x + \left( {3

View Question The number of words (with or without meaning)
that can be formed from all the letters of the
word “LETTER” in which vowe

View Question Suppose that a function f : R $$ \to $$ R satisfies
f(x + y) = f(x)f(y) for all x, y $$ \in $$ R and f(1) = 3. If $$\sum

View Question If $$\overrightarrow x $$ and $$\overrightarrow y $$ be two non-zero vectors such that
$$\left| {\overrightarrow x + \o

View Question Consider the data on x taking the values 0, 2, 4,
8,....., 2n with frequencies nC0
,
nC1
,
nC2
,....,
nCn
respectively.

View Question ## Physics

For a plane electromagnetic wave, the magnetic field at a point x and time t is
$$\overrightarrow B \left( {x,t} \right)

View Question Particle A of mass m1
moving with velocity $$\left( {\sqrt3\widehat i + \widehat j} \right)m{s^{ - 1}}$$ collides with

View Question When a car is at rest, its driver sees rain drops falling on it vertically. When driving the car with
speed v, he sees t

View Question A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of
curvature of a surfac

View Question A charged particle going around in a circle can be considered to be a current loop. A particle of
mass m carrying charge

View Question A square loop of side 2$$a$$ and carrying current I is kept in xz plane with its centre at origin. A long
wire carrying

View Question A circuit to verify Ohm's law uses ammeter and voltmeter in series or parallel connected correctly
to the resistor. In t

View Question In a dilute gas at pressure P and temperature T, the mean time between successive collisions of a
molecule varies with T

View Question A fluid is flowing through a horizontal pipe of varying cross-section, with speed v ms–1 at a point
where the pressure i

View Question Assuming the nitrogen molecule is moving with r.m.s. velocity at 400 K, the de-Broglie wavelength
of nitrogen molecule i

View Question The linear mass density of a thin rod AB of length L varies from A to B as
$$\lambda \left( x \right) = {\lambda _0}\lef

View Question Three rods of identical cross-section and lengths are made of three different materials of thermal
conductivity K1
, K2

View Question When a particle of mass m is attached to a vertical spring of spring constant k and released, its
motion is described by

View Question Two identical electric point dipoles have dipole moments $${\overrightarrow p _1} = p\widehat i$$ and $${\overrightarrow

View Question Two planets have masses M and 16 M and their radii are $$a$$ and 2$$a$$, respectively. The separation
between the centre

View Question Consider the force F on a charge 'q' due to a uniformly charged spherical shell of radius R carrying
charge Q distribute

View Question A student measuring the diameter of a pencil of circular cross-section with the help of a vernier
scale records the foll

View Question In the figure shown, the current in the 10 V battery is close to :

View Question Given the masses of various atomic particles
mp = 1.0072 u, mn = 1.0087 u, me = 0.000548 u,
$${m_{\overline v }}$$ = 0,

View Question A particle moving in the xy plane experiences a velocity dependent force
$$\overrightarrow F = k\left( {{v_y}\widehat i

View Question A Young's double-slit experiment is performed using monochromatic light of wavelength $$\lambda $$. The
intensity of lig

View Question The centre of mass of solid hemisphere of radius 8 cm is x from the centre of the flat surface. Then
value of x is _____

View Question The output characteristics of a transistor is shown in the figure. When VCE is 10V and IC
= 4.0 mA,
then value of $$\be

View Question In a series LR circuit, power of 400W is dissipated from a source of 250 V, 50 Hz. The power factor
of the circuit is 0.

View Question An engine operates by taking a monoatomic ideal gas through the cycle shown in the figure. The
percentage efficiency of

View Question