JEE Main 2020 (Online) 2nd September Evening Slot

Paper was held on
Wed, Sep 2, 2020 9:30 AM

## Chemistry

Three elements X, Y and Z are in the 3rd period
of the periodic table. The oxides of X, Y and Z,
respectively, are basic

View Question The major product obtained from
E2 - elimination of 3-bromo-2-fluoropentane is

View Question Arrange the following labelled hydrogens in
decreasing order of acidity :

View Question Two elements A and B have similar chemical
properties. They don’t form solid
hydrogencarbonates, but react with nitrogen

View Question Cast iron is used for the manufacture of :

View Question Consider the reaction sequence given below:
Which of the following statements is true?

View Question The number of subshells associated with n = 4
and m = –2 quantum numbers is

View Question If you spill a chemical toilet cleaning liquid on
your hand, your first aid would be

View Question Simplified absorption spectra of three
complexes ((i), (ii) and (iii)) of Mn+ ion are
provided below; their $$\lambda $$

View Question The one that is not expected to show isomerism
is :

View Question The size of a raw mango shrinks to a much
smaller size when kept in a concentrated salt
solution. Which one of the follo

View Question Match the type of interaction in column A with
the distance dependence of their interaction
energy in column B
.tg {bo

View Question The results given in the below table were
obtained during kinetic studies of the following
reaction
2A + B $$ \to $$ C +

View Question The molecular geometry of SF6 is octahedral.
What is the geometry of SF4 (including lone
pair(s) of electrons, if any)?

View Question Two compounds A and B with same molecular
formula (C3H6O) undergo Grignard’s reaction
with methylmagnesium bromide to gi

View Question Amongst the following statements regarding
adsorption, those that are valid are
(a) $$\Delta $$H becomes less negative a

View Question An organic compound ‘A’ (C9H10O) when
treated with conc. HI undergoes cleavage to
yield compounds ‘B’ and ‘C’. ‘B’ gives

View Question The shape / structure of [XeF5]– and XeO3F2,
respectively, are

View Question The major product of the following reaction is :

View Question The correct observation in the following
reactions is :

View Question The work function of sodium metal is
4.41 $$ \times $$ 10–19 J. If photons of wavelength 300 nm
are incident on the meta

View Question The heat of combustion of ethanol into carbon
dioxide and water is – 327 kcal at constant
pressure. The heat evolved (in

View Question The oxidation states of transition metal atoms
in K2Cr2O7, KMnO4 and K2FeO4, respectively,
are x, y and z. The sum of x,

View Question For the disproportionation reaction
2Cu+(aq) ⇌ Cu(s) + Cu2+(aq) at 298 K. ln K
(where K is the equilibrium constant) is

View Question The ratio of the mass percentages of ‘C & H’
and ‘C & O’ of a saturated acyclic organic
compound ‘X’ are 4 : 1 a

View Question ## Mathematics

The area (in sq. units) of an equilateral triangle
inscribed in the parabola y2 = 8x, with one of
its vertices on the ve

View Question Let n > 2 be an integer. Suppose that there are
n Metro stations in a city located along a
circular path. Each pair o

View Question Let f(x) be a quadratic polynomial such that
f(–1) + f(2) = 0. If one of the roots of f(x) = 0
is 3, then its other root

View Question Let f : R $$ \to $$ R be a function which satisfies
f(x + y) = f(x) + f(y) $$\forall $$ x, y $$ \in $$ R. If f(1) = 2 an

View Question If the equation cos4 $$\theta $$ + sin4 $$\theta $$ +
$$\lambda $$ = 0 has real
solutions for
$$\theta $$, then
$$\lambd

View Question Let a, b, c $$ \in $$ R be all non-zero and satisfy
a3 + b3 + c3 = 2. If the matrix
A = $$\left( {\matrix{
a & b

View Question Let f : (–1,
$$\infty $$)
$$ \to $$ R be defined by f(0) = 1 and
f(x) = $${1 \over x}{\log _e}\left( {1 + x} \right)$$,

View Question If the sum of first 11 terms of an A.P.,
a1, a2, a3, ....
is 0 (a $$ \ne $$ 0), then the sum of the A.P.,
a1
, a3
, a5
,

View Question The equation of the normal to the curve
y = (1+x)2y + cos
2(sin–1x) at x = 0 is :

View Question The imaginary part of
$${\left( {3 + 2\sqrt { - 54} } \right)^{{1 \over 2}}} - {\left( {3 - 2\sqrt { - 54} } \right)^{{1

View Question $$\mathop {\lim }\limits_{x \to 0} {\left( {\tan \left( {{\pi \over 4} + x} \right)} \right)^{{1 \over x}}}$$ is equal

View Question For some $$\theta \in \left( {0,{\pi \over 2}} \right)$$, if the eccentricity of the
hyperbola, x2–y2sec2$$\theta $$ =

View Question A plane passing through the point (3, 1, 1)
contains two lines whose direction ratios are 1,
–2, 2 and 2, 3, –1 respecti

View Question Which of the following is a tautology ?

View Question Let EC denote the complement of an event E.
Let E1
, E2
and E3
be any pairwise independent
events with P(E1) > 0
a

View Question Let A = {X = (x, y, z)T: PX = 0 and
x2 + y2 + z2 = 1} where
$$P = \left[ {\matrix{
1 & 2 & 1 \cr
{ - 2}

View Question Consider a region R = {(x, y) $$ \in $$ R : x2 $$ \le $$ y $$ \le $$ 2x}.
if a line y = $$\alpha $$ divides the area of

View Question If a curve y = f(x), passing through the point
(1, 2), is the solution of the differential equation,
2x2dy= (2xy + y2)dx

View Question Let S be the sum of the first 9 terms of the
series :
{x + k$$a$$} + {x2 + (k + 2)$$a$$} + {x3 + (k + 4)$$a$$}
+ {x4 + (

View Question The set of all possible values of
$$\theta $$ in the interval
(0, $$\pi $$) for which the points (1, 2) and (sin
$$\the

View Question If the variance of the terms in an increasing A.P., b1
, b2
, b3
,....,b11 is 90, then the common
difference of this A.P

View Question If y = $$\sum\limits_{k = 1}^6 {k{{\cos }^{ - 1}}\left\{ {{3 \over 5}\cos kx - {4 \over 5}\sin kx} \right\}} $$,
then $$

View Question Let [t] denote the greatest integer less than or
equal to t. Then the value of $$\int\limits_1^2 {\left| {2x - \left[ {3

View Question Let the position vectors of points 'A' and 'B' be
$$\widehat i + \widehat j + \widehat k$$ and $$2\widehat i + \widehat

View Question For a positive integer n,
$${\left( {1 + {1 \over x}} \right)^n}$$ is expanded
in increasing powers of x. If three conse

View Question ## Physics

In a plane electromagnetic wave, the directions
of electric field and magnetic field are
represented by $$\widehat k$$ a

View Question When the temperature of a metal wire is
increased from 0oC to 10oC, its length
increases by 0.02%. The percentage change

View Question In a Young’s double slit experiment, 16 fringes
are observed in a certain segment of the
screen when light of a waveleng

View Question A heat engine is involved with exchange of heat
of 1915 J, – 40J, + 125 J and –Q J, during one
cycle achieving an effici

View Question An ideal gas in a closed container is slowly
heated. As its temperature increases, which of
the following statements are

View Question In a hydrogen atom the electron makes a
transition from (n + 1)th level to the nth level.
If n >> 1, the frequency

View Question If momentum (P), area (A) and time (T) are
taken to be the fundamental quantities then the
dimensional formula for energ

View Question The displacement time graph of a particle
executing S.H.M is given in figure :(sketch is
schematic and not to scale)
Wh

View Question The figure shows a region of length ‘l’ with a
uniform magnetic field of 0.3 T in it and a
proton entering the region wi

View Question An inductance coil has a reactance of 100 $$\Omega $$.
When an AC signal of frequency 1000 Hz is
applied to the coil, th

View Question A wire carrying current I is bent in the shape
ABCDEFA as shown, where rectangle ABCDA
and ADEFA are perpendicular to ea

View Question A 10 $$\mu $$F capacitor is fully charged to a potential
difference of 50 V. After removing the source
voltage it is con

View Question A particle is moving 5 times as fast as an
electron. The ratio of the de-Broglie wavelength
of the particle to that of t

View Question The height ‘h’ at which the weight of a body will
be the same as that at the same depth ‘h’ from
the surface of the eart

View Question A small point mass carrying some positive
charge on it, is released from the edge of a
table. There is a uniform electri

View Question A potentiometer wire PQ of 1 m length is
connected to a standard cell E1. Another cell E2
of emf 1.02 V is connected wit

View Question Two uniform circular discs are rotating
independently in the same direction around
their common axis passing through the

View Question A charge Q is distributed over two concentric
conducting thin spherical shells radii r and
R (R > r). If the surface

View Question In the following digital circuit, what will be the
output at ‘Z’, when the input (A, B) are (1, 0),
(0, 0), (1, 1,), (0,

View Question A capillary tube made of glass of radius 0.15
mm is dipped vertically in a beaker filled with
methylene iodide (surface

View Question A wire of density 9 $$ \times $$ 10–3 kg cm–3 is stretched
between two clamps 1 m apart. The resulting
strain in the wir

View Question A light ray enters a solid glass sphere of
refractive index $$\mu $$ = $$\sqrt 3 $$ at an angle of incidence
60o. The ra

View Question A particle of mass m is moving along the x-axis
with initial velocity $$u\widehat i$$. It collides elastically
with a pa

View Question A square shaped hole of side l = $${a \over 2}$$ is carved
out at a distance d = $${a \over 2}$$ from the centre ‘O’ of

View Question An ideal cell of emf 10 V is connected in circuit
shown in figure. Each resistance is 2 $$\Omega $$. The
potential diffe

View Question