JEE Main 2020 (Online) 2nd September Morning Slot

Paper was held on
Wed, Sep 2, 2020 3:30 AM

## Chemistry

On heating compound (A) gives a gas (B) which
is a constituent of air. This gas when treated
with H2 in the presence of

View Question In Carius method of estimation of halogen,
0.172 g of an organic compound showed
presence of 0.08 g of bromine. Which of

View Question If AB4 molecule is a polar molecule, a possible
geometry of AB4 is

View Question The major product in the following reaction is :

View Question The figure that is not a direct manifestation of
the quantum nature of atoms is :

View Question For the following Assertion and Reason, the
correct option is
Assertion (A): When Cu (II) and sulphide ions
are mixed, t

View Question An open beaker of water in equilibrium with
water vapour is in a sealed container. When a
few grams of glucose are added

View Question Consider the following rections:
'x', 'y' and 'z' in these reactions are respectively.

View Question Which one of the following graphs is not
correct for ideal gas?
d = Density, P = Pressure, T = Temperature

View Question For octahedral Mn(II) and tetrahedral Ni(II)
complexes, consider the following statements:
(I) both the complexes can be

View Question Consider that a d6 metal ion (M2+) forms a
complex with aqua ligands, and the spin only
magnetic moment of the complex i

View Question Which of the following compunds will show
retention in configuration on nucleophilic
substitution by OH– ion?

View Question The IUPAC name for the following compound
is

View Question The statement that is not true about ozone is :

View Question While titrating dilute HCl solution with aqueous
NaOH, which of the following will not be
required?

View Question Which of the following is used for the
preparation of colloids?

View Question In general the property (magnitudes only) that
show an opposite trend in comparison to other
properties across a period

View Question The major aromatic product C in the following
reaction sequence will be :

View Question The metal mainly used in devising
photoelectric cells is :

View Question The increasing order of the following
compounds towards HCN addition is :

View Question The mass of gas adsorbed, x, per unit mass of
adsorbate, m, was measured at various pressures,
p. A graph between $$\log

View Question The Gibbs change (in J) for the given reaction at
[Cu2+] = [Sn2+] = 1 M and 298K is :
Cu(s) + Sn2+(aq.) $$ \to $$ Cu2+(

View Question The number of chiral carbons present in the
molecule given below is _____ .

View Question The internal energy change (in J) When 90 g of
water undergoes complete evaporation at
100oC is ____________.
(Given : $

View Question The oxidation states of iron atoms in
compounds (A), (B) and (C), respectively, are x,
y and z. The sum of x, y and z is

View Question ## Mathematics

Let
$$\alpha $$ > 0,
$$\beta $$ > 0 be such that
$$\alpha $$3 + $$\beta $$2 = 4. If the
maximum value of the term

View Question If |x| < 1, |y| < 1 and x $$ \ne $$ y, then the sum to infinity
of the following series
(x + y) + (x2+xy+y2) + (x3

View Question Box I contains 30 cards numbered 1 to 30 and
Box II contains 20 cards numbered 31 to 50. A
box is selected at random and

View Question Area (in sq. units) of the region outside
$${{\left| x \right|} \over 2} + {{\left| y \right|} \over 3} = 1$$ and inside

View Question If a function f(x) defined by
$$f\left( x \right) = \left\{ {\matrix{
{a{e^x} + b{e^{ - x}},} & { - 1 \le x <

View Question Let S be the set of all $$\lambda $$ $$ \in $$ R for which the system
of linear equations
2x – y + 2z = 2
x – 2y +
$$\la

View Question Let A be a 2 $$ \times $$ 2 real matrix with entries from
{0, 1} and |A|
$$ \ne $$ 0. Consider the following two
stateme

View Question The contrapositive of the statement "If I reach the
station in time, then I will catch the train" is :

View Question Let y = y(x) be the solution of the differential
equation,
$${{2 + \sin x} \over {y + 1}}.{{dy} \over {dx}} = - \cos x$

View Question Let X = {x
$$ \in $$ N : 1
$$ \le $$ x
$$ \le $$ 17} and
Y = {ax + b: x
$$ \in $$ X and a, b $$ \in $$ R, a > 0}. If

View Question The plane passing through the points (1, 2, 1),
(2, 1, 2) and parallel to the line, 2x = 3y, z = 1
also passes through t

View Question Let P(h, k) be a point on the curve
y = x2
+ 7x + 2, nearest to the line, y = 3x – 3.
Then the equation of the normal t

View Question If the tangent to the curve y = x + sin y at a point
(a, b) is parallel to the line joining $$\left( {0,{3 \over 2}} \ri

View Question If R = {(x, y) : x, y
$$ \in $$ Z, x2 + 3y2
$$ \le $$ 8} is a relation
on the set of integers Z, then the domain of R–1

View Question Let
$$\alpha $$ and
$$\beta $$ be the roots of the equation
5x2 + 6x – 2 = 0. If Sn
=
$$\alpha $$n +
$$\beta $$n, n = 1

View Question The sum of the first three terms of a G.P. is S and
their product is 27. Then all such S lie in :

View Question A line parallel to the straight line 2x – y = 0 is
tangent to the hyperbola
$${{{x^2}} \over 4} - {{{y^2}} \over 2} = 1

View Question The domain of the function
f(x) = $${\sin ^{ - 1}}\left( {{{\left| x \right| + 5} \over {{x^2} + 1}}} \right)$$ is (–
$$

View Question The value of $${\left( {{{1 + \sin {{2\pi } \over 9} + i\cos {{2\pi } \over 9}} \over {1 + \sin {{2\pi } \over 9} - i\co

View Question If p(x) be a polynomial of degree three that has
a local maximum value 8 at x = 1 and a local
minimum value 4 at x = 2;

View Question The integral $$\int\limits_0^2 {\left| {\left| {x - 1} \right| - x} \right|dx} $$ is equal to______.

View Question Let $$\overrightarrow a $$, $$\overrightarrow b $$ and $$\overrightarrow c $$ be three unit vectors such that
$${\left|

View Question If $$\mathop {\lim }\limits_{x \to 1} {{x + {x^2} + {x^3} + ... + {x^n} - n} \over {x - 1}}$$ = 820,
(n $$ \in $$ N) the

View Question The number of integral values of k for which
the line, 3x + 4y = k intersects the circle,
x2
+ y2
– 2x – 4y + 4 = 0 at

View Question If the letters of the word 'MOTHER' be permuted
and all the words so formed (with or without
meaning) be listed as in a

View Question ## Physics

Interference fringes are observed on a screen
by illuminating two thin slits 1 mm apart with a
light source ($$\lambda $

View Question A cylindrical vessel containing a liquid is
rotated about its axis so that the liquid rises at
its sides as shown in the

View Question A charged particle (mass m and charge q)
moves along X-axis with velocity V0. When it
passes through the origin it enter

View Question An amplitude modulated wave is represented
by the expression vm = 5(1 + 0.6 cos 6280t)
sin(211 × 104 t) volts
The minimu

View Question A plane electromagnetic wave, has frequency
of 2.0 $$ \times $$ 1010 Hz and its energy density is
1.02 $$ \times $$ 10–8

View Question A uniform cylinder of mass M and radius R is to
be pulled over a step of height a (a < R) by
applying a force F at it

View Question Two identical strings X and Z made of same
material have tension TX and TZ in them. If their
fundamental frequencies are

View Question
Shown in the figure is rigid and uniform one
meter long rod AB held in horizontal position by
two strings tied to its e

View Question A bead of mass m stays at point P(a, b) on a
wire bent in the shape of a parabola y = 4Cx2
and rotating with angular spe

View Question Magnetic materials used for making permanent
magnets (P) and magnets in a transformer (T)
have different properties of t

View Question The mass density of a spherical galaxy varies
as
$${K \over r}$$ over a large distance ‘r’ from its centre.
In that regi

View Question If speed V, area A and force F are chosen as
fundamental units, then the dimension of
Young’s modulus will be

View Question The least count of the main scale of a vernier
callipers is 1 mm. Its vernier scale is divided
into 10 divisions and coi

View Question Train A and train B are running on parallel
tracks in the opposite directions with speeds of
36 km/hour and 72 km/hour,

View Question A gas mixture consists of 3 moles of oxygen
and 5 moles of argon at temperature T.
Assuming the gases to be ideal and th

View Question A particle of mass m with an initial velocity $$u\widehat i$$
collides perfectly elastically with a mass 3 m at
rest. It

View Question Consider four conducting materials copper,
tungsten, mercury and aluminium with
resistivity $$\rho $$C, $$\rho $$T, $$\r

View Question
A spherical mirror is obtained as shown in the
figure from a hollow glass sphere. If an object
is positioned in front o

View Question In a reactor, 2 kg of 92U235 fuel is fully used up
in 30 days. The energy released per fission is
200 MeV. Given that th

View Question When radiation of wavelength $$\lambda $$ is used to
illuminate a metallic surface, the stopping
potential is V. When th

View Question A beam of protons with speed 4 × 105 ms–1
enters a uniform magnetic field of 0.3 T at an
angle of 60° to the magnetic fi

View Question
A small block starts slipping down from a point
B on an inclined plane AB, which is making an angle $$\theta $$ with th

View Question An engine takes in 5 moles of air at 20oC and
1 atm, and compresses it adiabatically to
1/10th of the original volume. A

View Question A circular coil of radius 10 cm is placed in a
uniform magnetic field of 3.0 $$ \times $$ 10–5 T with its
plane perpendi

View Question A 5 $$\mu $$F capacitor is charged fully by a 220 V
supply. It is then disconnected from the supply
and is connected in

View Question