JEE Main 2019 (Online) 9th April Morning Slot

Paper was held on
Tue, Apr 9, 2019 3:30 AM

## Chemistry

The correct order of the oxidation states of
nitrogen in NO, N2O, NO2 and N2O3 is :

View Question The degenerate orbitals of [Cr(H2O)6]3+ are :

View Question The major product of the following reaction is :

View Question The organic compound that gives following
qualitative analysis is :
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View Question Which of the following statements is not true
about sucrose?

View Question The one that will show optical activity is :
(en = ethane-1,2-diamine)

View Question Among the following, the molecule expected
to be stabilized by anion formation is :
C2, O2, NO, F2

View Question The given plots represent the variation of the
concentration of a reactant R with time for two
different reactions (i) a

View Question The major product of the following reaction is :

View Question For a reaction,
N2(g) + 3H2(g) $$ \to $$ 2NH3(g) ;
identify dihydrogen (H2) as a limiting reagent
in the following react

View Question The correct IUPAC name of the following
compound is :

View Question The osmotic pressure of a dilute solution of an
ionic compound XY in water is four times that
of a solution of 0.01 M Ba

View Question Among the following, the set of parameters that
represents path function, is :
(A) q + w
(B) q
(C) w
(D) H–TS

View Question The standard Gibbs energy for the given cell
reaction in kJ mol–1 at 298 K is :
Zn(s) + Cu2+ (aq) $$ \to $$ Zn2+ (aq) +

View Question The major product of the following reaction is :

View Question The increasing order of reactivity of the
following compounds towards aromatic
electrophilic substitution reaction is :

View Question The major product of the following reaction is :
$${\rm{C}}{{\rm{H}}_3}{\rm{CH = CHC}}{{\rm{O}}_2}{\rm{CH_3 }}\buildrel

View Question Liquid 'M' and liquid 'N' form an ideal solution.
The vapour pressures of pure liquids 'M' and
'N' are 450 and 700 mmHg,

View Question Aniline dissolved in dilute HCl is reacted with
sodium nitrite at 0ºC. This solution was added
dropwise to a solution co

View Question For any given series of spectral lines of atomic
hydrogen, let $$\Delta \mathop v\limits^\_ = $$ $$\Delta {\overline v

View Question The element having greatest difference between
its first and second ionization energies, is :

View Question The major product of the following reaction is :

View Question ## Mathematics

Let $$\overrightarrow \alpha = 3\widehat i + \widehat j$$ and $$\overrightarrow \beta = 2\widehat i - \widehat j + 3

View Question The value of $$\int\limits_0^{\pi /2} {{{{{\sin }^3}x} \over {\sin x + \cos x}}dx} $$ is

View Question If ƒ(x) is a non-zero polynomial of degree four,
having local extreme points at x = –1, 0, 1; then
the set
S = {x $$ \i

View Question Let ƒ(x) = 15 – |x – 10|; x $$ \in $$ R. Then the set
of all values of x, at which the function,
g(x) = ƒ(ƒ(x)) is not d

View Question If the standard deviation of the numbers
–1, 0, 1, k is $$\sqrt 5$$ where k > 0, then k is equal to

View Question Let p, q $$ \in $$ R. If 2 - $$\sqrt 3$$ is a root of the quadratic
equation, x2 + px + q = 0, then :

View Question All the points in the set
$$S = \left\{ {{{\alpha + i} \over {\alpha - i}}:\alpha \in R} \right\}(i = \sqrt { - 1} )$

View Question Slope of a line passing through P(2, 3) and
intersecting the line, x + y = 7 at a distance of
4 units from P, is :

View Question If the fourth term in the binomial expansion of $${\left( {{2 \over x} + {x^{{{\log }_8}x}}} \right)^6}$$
(x > 0) is

View Question A committee of 11 members is to be formed from
8 males and 5 females. If m is the number of ways
the committee is formed

View Question The solution of the differential equation
$$x{{dy} \over {dx}} + 2y$$ = x2 (x $$ \ne $$ 0) with y(1) = 1, is :

View Question Let the sum of the first n terms of a non-constant
A.P., a1, a2, a3, ..... be $$50n + {{n(n - 7)} \over 2}A$$, where
A i

View Question The integral $$\int {{\rm{se}}{{\rm{c}}^{{\rm{2/ 3}}}}\,{\rm{x }}\,{\rm{cose}}{{\rm{c}}^{{\rm{4 / 3}}}}{\rm{x \,dx}}} $$

View Question The area (in sq. units) of the region
A = {(x, y) : x2 $$ \le $$ y $$ \le $$ x + 2} is

View Question Let $$\alpha $$ and $$\beta $$ be the roots of the equation
x2 + x + 1 = 0. Then for y $$ \ne $$ 0 in R,
$$$\left| {\mat

View Question Let $$\sum\limits_{k = 1}^{10} {f(a + k) = 16\left( {{2^{10}} - 1} \right)} $$ where the function
ƒ satisfies
ƒ(x + y)

View Question Four persons can hit a target correctly with
probabilities
$${1 \over 2}$$, $${1 \over 3}$$, $${1 \over 4}$$ and
$${1 \o

View Question The value of cos210° – cos10°cos50° + cos250° is

View Question If the function ƒ defined on , $$\left( {{\pi \over 6},{\pi \over 3}} \right)$$ by
$$$f(x) = \left\{ {\matrix{
{{{\

View Question If one end of a focal chord of the parabola,
y2 = 16x is at (1, 4), then the length of this focal
chord is :

View Question If $$\left[ {\matrix{
1 & 1 \cr
0 & 1 \cr
} } \right]\left[ {\matrix{
1 & 2 \cr
0 &

View Question If the function ƒ : R – {1, –1} $$ \to $$ A defined by
ƒ(x) = $${{{x^2}} \over {1 - {x^2}}}$$ , is surjective, then A i

View Question ## Physics

In the density measurement of a cube, the mass and
edge length are measured as (10.00 ± 0.10) kg and
(0.10 ± 0.01) m, re

View Question An HCl molecule has rotational, translational
and vibrational motions. If the rms velocity of
HCl molecules in its gaseo

View Question A wire of resistance R is bent to form a square
ABCD as shown in the figure. The effective
resistance between E and C is

View Question Following figure shows two processes A and
B for a gas. If $$\Delta $$QA and $$\Delta $$QB are the amount of
heat absorb

View Question The total number of turns and cross-section area
in a solenoid is fixed. However, its length L is varied
by adjusting th

View Question A simple pendulum oscillating in air has period
T. The bob of the pendulum is completely
immersed in a non-viscous liqui

View Question Determine the charge on the capacitor in the
following circuit :

View Question A system of three charges are placed as shown
in the figure :
If D >> d, the potential energy of the system is
be

View Question A body of mass 2 kg makes an eleastic collision
with a second body at rest and continues to move
in the original directi

View Question The stream of a river is flowing with a speed
of 2km/h. A swimmer can swim at a speed of
4km/h. What should be the direc

View Question A solid sphere of mass 'M' and radius 'a' is
surrounded by a uniform concentric spherical
shell of thickness 2a and mass

View Question The pressure wave, P = 0.01 sin [1000t – 3x] Nm–2,
corresponds to the sound produced by a vibrating blade
on a day when

View Question A moving coil galvanometer has resistance 50$$\Omega $$
and it indicates full deflection at 4mA current.
A voltmeter is

View Question The electric field of light wave is given as
$$$\overrightarrow E = {10^{ - 3}}\cos \left( {{{2\pi x} \over {5 \times {

View Question A ball is thrown vertically up (taken as +z-axis)
from the ground. The correct momentum-height
(p-h) diagram is :

View Question A capacitor with capacitance 5μF is charged to
5μC. If the plates are pulled apart to reduce the
capacitance to 2μF, how

View Question The figure shows a Young's double slit
experimental setup. It is observed that when a
thin transparent sheet of thicknes

View Question A rigid square loop of side 'a' and carrying
current I2 is lying on a horizontal surface near
a long current I1 carrying

View Question A string is clamped at both the ends and it is
vibrating in its 4th harmonic. The equation of the
stationary wave is Y =

View Question The following bodies are made to roll up
(without slipping) the same inclined plane from
a horizontal plane. : (i) a rin

View Question A stationary horizontal disc is free to rotate
about its axis. When a torque is applied on it,
its kinetic energy as a f

View Question A uniform cable of mass 'M' and length 'L' is
placed on a horizontal surface such that its (1/n)th
part is hanging below

View Question The magnetic field of a plane electromagnetic
wave is given by :
$$$\overline B = {B_0}\widehat i\left[ {\cos (kz - \om

View Question If 'M' is the mass of water that rises in a capillary
tube of radius 'r', then mass of water which will
rise in a capill

View Question Taking the wavelength of first Balmer line in
hydrogen spectrum (n = 3 to n = 2) as 660 nm,
the wavelength of the 2nd Ba

View Question A concave mirror for face viewing has focal
length of 0.4 m. The distance at which you hold
the mirror from your face in

View Question A rectangular coil (Dimension 5 cm × 2.5 cm)
with 100 turns, carrying a current of 3 A in the
clock-wise direction is ke

View Question For a given gas at 1 atm pressure, rms speed
of the molecule is 200 m/s at 127°C. At 2 atm
pressure and at 227°C, the rm

View Question