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 The IUPAC name of the following compound is :

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 The correct match between Item-I (starting
material) and Item-II (reagent) for the
preparation of benzaldehyde is :
.tg

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 Match the following :
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;bo

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

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

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

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 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 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