JEE Main 2020 (Online) 5th September Evening Slot

Paper was held on
Sat, Sep 5, 2020 9:30 AM

## Chemistry

The major product formed in the following reaction is :
CH3CH = CHCH(CH3)2 $$\buildrel {HBr} \over
\longrightarrow $$

View Question Boron and silicon of very high purity can be obtained through :

View Question Among the following compounds, geometrical isomerism is exhibited by :

View Question The correct statement about probability density (except at infinite distance from nucleus) is :

View Question The compound that has the largest H–M–H bond angle (M = N, O, S, C) is :

View Question The rate constant (k) of a reaction is measured at differenct temperatures (T), and the data are
plotted in the given fi

View Question The variation of molar conductivity with concentration of an electrolyte (X) in aqueous solution
is shown in the given f

View Question The final major product of the following reaction is :

View Question The major product of the following reaction is :

View Question Lattice enthalpy and enthalpy of solution of NaCl are 788 kJ mol–1, and 4 kJ mol–1, respectively.
The hydration enthalpy

View Question Consider the complex ions,
trans-[Co(en)2Cl2]+ (A) and cis-[Co(en)2Cl2]+ (B).
The correct statement regarding them is :

View Question The correct order of the ionic radii of O2–, N3–, F–
, Mg2+, Na+ and Al3+ is :

View Question The increasing order of boiling points of the following compounds is :

View Question For a reaction X + Y ⇌ 2Z , 1.0 mol of X, 1.5 mol of Y and 0.5 mol of Z were taken in a 1 L
vessel and allowed to react.

View Question The volume, in mL, of 0.02 M K2Cr2O7 solution
required to react with 0.288 g of ferrous
oxalate in acidic medium is ____

View Question Considering that $$\Delta $$0
> P, the magnetic moment (in BM) of [Ru(H2O)6]2+ would be _________.

View Question For a dimerization reaction,
2A(g) $$ \to $$ A2(g)
at 298 K, $$\Delta $$Uo
= –20 kJ mol–1, $$\Delta $$So
= –30
JK–1 mo

View Question The number of chiral carbons present in
sucrose is _____.

View Question ## Mathematics

If a + x = b + y = c + z + 1, where a, b, c, x, y, z
are non-zero distinct real numbers, then
$$\left| {\matrix{
x &a

View Question The value of $${\left( {{{ - 1 + i\sqrt 3 } \over {1 - i}}} \right)^{30}}$$ is :

View Question If the sum of the second, third and fourth terms
of a positive term G.P. is 3 and the sum of its
sixth, seventh and eigh

View Question Let y = y(x) be the solution of the differential
equation
cosx$${{dy} \over {dx}}$$ + 2ysinx = sin2x, x $$ \in $$ $$\lef

View Question If the mean and the standard deviation of the
data 3, 5, 7, a, b are 5 and 2 respectively, then
a and b are the roots of

View Question $$\mathop {\lim }\limits_{x \to 0} {{x\left( {{e^{\left( {\sqrt {1 + {x^2} + {x^4}} - 1} \right)/x}} - 1} \right)} \ove

View Question If x = 1 is a critical point of the function
f(x) = (3x2
+ ax – 2 – a)ex
, then :

View Question There are 3 sections in a question paper and
each section contains 5 questions. A candidate
has to answer a total of 5 q

View Question If
$$\int {{{\cos \theta } \over {5 + 7\sin \theta - 2{{\cos }^2}\theta }}} d\theta $$ = A$${\log _e}\left| {B\left( \t

View Question If the length of the chord of the circle,
x2 + y2 = r2
(r > 0) along the line, y – 2x = 3 is r,
then r2
is equal to

View Question If the system of linear equations
x + y + 3z = 0
x + 3y + k2z = 0
3x + y + 3z = 0
has a non-zero solution (x, y, z) for

View Question The derivative of
$${\tan ^{ - 1}}\left( {{{\sqrt {1 + {x^2}} - 1} \over x}} \right)$$ with respect to $${\tan ^{ - 1}

View Question If L = sin2$$\left( {{\pi \over {16}}} \right)$$ - sin2$$\left( {{\pi \over {8}}} \right)$$ and
M = cos2$$\left( {{\pi

View Question If $$\alpha $$ and $$\beta $$ are the roots of the equation,
7x2 – 3x – 2 = 0, then the value of
$${\alpha \over {1 - {

View Question Let A = {a, b, c} and B = {1, 2, 3, 4}. Then the
number of elements in the set C = {f : A $$ \to $$ B |
2 $$ \in $$ f(A)

View Question The area (in sq. units) of the region
A = {(x, y) : (x – 1)[x] $$ \le $$ y $$ \le $$ 2$$\sqrt x $$, 0 $$ \le $$ x $$ \l

View Question Let the vectors $$\overrightarrow a $$, $$\overrightarrow b $$, $$\overrightarrow c $$
be such that
$$\left| {\overrigh

View Question ## Physics

A ring is hung on a nail. It can oscillate, without
slipping or sliding (i) in its plane with a time
period T1 and, (ii)

View Question A spaceship in space sweeps stationary
interplanetary dust. As a result, its mass
increases at a rate $${{dM\left( t \ri

View Question The quantities x = $${1 \over {\sqrt {{\mu _0}{\varepsilon _0}} }}$$, y = $${E \over B}$$ and z = $${l \over {CR}}$$ are

View Question Ten charges are placed on the circumference
of a circle of radius R with constant angular
separation between successive

View Question The correct match between the entries in
column I and column II are :
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View Question Two Zener diodes (A and B) having breakdown
voltages of 6 V and 4 V respectively, are
connected as shown in the circuit

View Question Two different wires having lengths L1 and L2,
and respective temperature coefficient of linear
expansion $$\alpha $$1 an

View Question In the circuit, given in the figure currents in
different branches and value of one resistor are
shown. Then potential a

View Question An iron rod of volume 10–3 m3 and relative
permeability 1000 is placed as core in a
solenoid with 10 turns/cm. If a curr

View Question In an adiabatic process, the density of a
diatomic gas becomes 32 times its initial value.
The final pressure of the gas

View Question The acceleration due to gravity on the earth’s
surface at the poles is g and angular velocity of
the earth about the axi

View Question A parallel plate capacitor has plate of length
'l', width ‘w’ and separation of plates is ‘d’. It
is connected to a batt

View Question A galvanometer is used in laboratory for
detecting the null point in electrical
experiments. If, on passing a current of

View Question Two coherent sources of sound, S1 and S2,
produce sound waves of the same wavelength,
$$\lambda $$ = 1 m, in phase. S1 a

View Question The velocity (v) and time (t) graph of a body in
a straight line motion is shown in the figure.
The point S is at 4.333

View Question In an experiment to verify Stokes law, a small
spherical ball of radius r and density $$\rho $$ falls
under gravity thro

View Question An infinitely long, straight wire carrying current
I, one side opened rectangular loop and a
conductor C with a sliding

View Question In the circuit shown, charge on the 5 $$\mu $$F
capacitor is :

View Question A thin rod of mass 0.9 kg and length 1 m is
suspended, at rest, from one end so that it can
freely oscillate in the vert

View Question Nitrogen gas is at 300oC temperature. The
temperature (in K) at which the rms speed of a
H2 molecule would be equal to t

View Question A prism of angle A = 1o has a refractive index
$$\mu $$ = 1.5. A good estimate for the minimum angle
of deviation (in de

View Question The surface of a metal is illuminated alternately
with photons of energies E1 = 4 eV and E2 = 2.5 eV
respectively. The r

View Question A body of mass 2 kg is driven by an engine
delivering a constant power of 1 J/s. The body
starts from rest and moves in

View Question