JEE Main 2019 (Online) 8th April Morning Slot
Paper was held on
Mon, Apr 8, 2019 3:30 AM
Chemistry
An organic compound neither reacts with neutral ferric chloride solution nor with fehling solution.
it however, reacts w
View Question The following ligand is :
View Question Maltose on treatment with dilute HCI gives :
View Question An organic compound 'X' showing the following solubility profile is :
View Question Given that $${E^\Theta }_{{O_2}/{H_2}O} = 1.23\,V$$ ;
$${E^\Theta }_{{S_2}O_8^{2 - }/SO_4^{2 - }} = 2.05\,V$$
$${E^\Thet
View Question The size of the iso-electronic species Cl–, Ar and Ca2+ is affected by :
View Question The IUPAC name of the following compound is :
View Question In the following compounds, the decreasing order of basic strength will be :
View Question The major product of the following reaction is :
View Question Which one of the following equations does not correctly represent the first law of thermodynamics
for the given processe
View Question Which of the following amines can be prepared by Gabriel phthalimide reaction ?
View Question The quantum number of four electrons are given below :
n = 4, l = 2, ml =–2, ms = –1/2
n = 3, l = 2, ml = 1, ms = +1/2
n
View Question In order to oxidise a mixture of one mole of each of FeC2O4, Fe2(C2O4)3, FeSO4 and Fe2(SO4)3 in
acidic medium, the numbe
View Question The lathanide ion that would show colour is :
View Question The correct order of the spin-only magnetic moment of metal ions in the following low-spin
complexes, [V(CN)6]4–,[Fe(CN)
View Question Coupling of benzene diazonium chloride with 1 - naphthol in alkaline medium will give :
View Question The major product of the following reaction is :
View Question The major product of the following reaction is :
View Question If solublity product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S, then
which of the followin
View Question For the reaction 2A + B $$ \to $$ C, the values of initial rate at diffrent reactant concentrations are
given in the tab
View Question The vapour pressures of pure liquids A and B are 400 and 600 mmHg, respectively at 298 K on
mixing the two liquids, the
View Question For silver, Cp(J K–1 mol–1) = 23 +0.01 T. If the temperature (T) of 3 moles of silver is raised from 300
K to 1000 K at
View Question Mathematics
If $$\alpha = {\cos ^{ - 1}}\left( {{3 \over 5}} \right)$$, $$\beta = {\tan ^{ - 1}}\left( {{1 \over 3}} \right)$$ whe
View Question The area (in sq. units) of the region
A = { (x, y) $$ \in $$ R × R| 0 $$ \le $$ x $$ \le $$ 3, 0 $$ \le $$ y
View Question The sum of the solutions of the equation
$$\left| {\sqrt x - 2} \right| + \sqrt x \left( {\sqrt x - 4} \right) + 2 =
View Question Let A and B be two non-null events such that
A $$ \subset $$ B . Then, which of the following statements
is always corre
View Question The sum of all natural numbers 'n' such that
100 < n < 200 and H.C.F. (91, n) > 1 is :
View Question Let $$A = \left( {\matrix{
{\cos \alpha } & { - \sin \alpha } \cr
{\sin \alpha } & {\cos \alpha } \cr
View Question If $$f(x) = {\log _e}\left( {{{1 - x} \over {1 + x}}} \right)$$, $$\left| x \right| < 1$$ then $$f\left( {{{2x} \over
View Question Let O(0, 0) and A(0, 1) be two fixed points. Then
the locus of a point P such that the perimeter of
$$\Delta $$AOP is 4,
View Question If S1 and S2 are respectively the sets of local
minimum and local maximum points of the function,
ƒ(x) = 9x4 + 12x3 – 3
View Question If $$f(x) = {{2 - x\cos x} \over {2 + x\cos x}}$$ and g(x) = logex, (x > 0) then
the value of integral $$\int\limits_
View Question The mean and variance of seven observations are
8 and 16, respectively. If 5 of the observations are
2, 4, 10, 12, 14, t
View Question $$\mathop {\lim }\limits_{x \to 0} {{{{\sin }^2}x} \over {\sqrt 2 - \sqrt {1 + \cos x} }}$$ equals:
View Question The length of the perpendicular from the point
(2, –1, 4) on the straight line,
$${{x + 3} \over {10}}$$= $${{y - 2} \ov
View Question A point on the straight line, 3x + 5y = 15 which is equidistant from the coordinate axes will lie only
in :
View Question If $$\alpha $$ and $$\beta $$ be the roots of the equation
x2 – 2x + 2 = 0, then the least value of n for which $${\left
View Question Let y = y(x) be the solution of the differential equation, $${({x^2} + 1)^2}{{dy} \over {dx}} + 2x({x^2} + 1)y = 1$$ suc
View Question The greatest value of c $$ \in $$ R for which the system
of linear equations
x – cy – cz = 0
cx – y + cz = 0
cx + cy – z
View Question If cos($$\alpha $$ + $$\beta $$) = 3/5 ,sin ( $$\alpha $$ - $$\beta $$) = 5/13 and
0 < $$\alpha , \beta$$ < $$\pi
View Question $$\int {{{\sin {{5x} \over 2}} \over {\sin {x \over 2}}}dx} $$ is equal to
(where c is a constant of integration)
View Question All possible numbers are formed using the digits
1, 1, 2, 2, 2, 2, 3, 4, 4 taken all at a time. The number
of such numbe
View Question If $$2y = {\left( {{{\cot }^{ - 1}}\left( {{{\sqrt 3 \cos x + \sin x} \over {\cos x - \sqrt 3 \sin x}}} \right)} \right)
View Question The sum of the squares of the lengths of the chords
intercepted on the circle, x2 + y2 = 16, by the lines,
x + y = n, n
View Question Let ƒ : [0, 2] $$ \to $$ R be a twice differentiable
function such that ƒ''(x) > 0, for all x $$ \in $$ (0, 2).
If $$
View Question Physics
An alternating voltage v(t) = 220 sin 100 $$\pi $$t volt
is applied to a purely resistance load of 50$$\Omega $$ .
The t
View Question If 1022 gas molecules each of mass 10–26 kg
collide with a surface (perpendicular to it)
elastically per second over an
View Question Two particles move at right angle to each other.
Their de-Broglie wavelengths are $$\lambda _1$$ and $$\lambda _2$$
resp
View Question In an interference experiment the ratio of amplitudes of coherent waves is $${{{a_1}} \over {{a_2}}} = {1 \over 3}$$ . T
View Question A thermally insulated vessel contains 150g of
water at 0°C. Then the air from the vessel is
pumped out adiabatically. A
View Question Radiation coming from transitions
n = 2 to n = 1 of hydrogen atoms fall on He+
ions in n = 1 and n = 2 states. The possi
View Question In SI units, the dimensions of $$\sqrt {{{{ \in _0}} \over {{\mu _0}}}} $$ is :
View Question A particle moves in one dimension from rest
under the influence of a force that varies with
the distance travelled by th
View Question A plane electromagnetic wave travels in free
space along the x-direction. The electric field
component of the wave at a
View Question Four identical particles of mass M are located
at the corners of a square of side 'a'. What
should be their speed if eac
View Question A solid conducting sphere, having a charge Q,
is surrounded by an uncharged conducting
hollow spherical shell. Let the p
View Question In figure, the optical fiber is $$l$$ = 2m long and
has a diameter of d = 20 μm. If a ray of light
is incident on one en
View Question
A wire of length 2L, is made by joining two
wires A and B of same length but different radii
r and 2r and made of the s
View Question A steel wire having a radius of 2.0 mm,
carrying a load of 4 kg, is hanging from a
ceiling. Given that g = 3.1 p ms–2, w
View Question For the circuit shown, with R1 = 1.0W, R2 = 2.0 W,
E1 = 2 V and E2 = E3 = 4 V, the potential
difference between the poin
View Question Ship A is sailing towards north-east with
velocity $$\mathop v\limits^ \to = 30\mathop i\limits^ \wedge + 50\mathop
View Question A thin circular plate of mass M and radius R
has its density varying as $$\rho $$(r) = $$\rho $$0r with $$\rho $$0 as
co
View Question A 20 Henry inductor coil is connected to a
10 ohm resistance in series as shown in figure.
The time at which rate of dis
View Question An upright object is placed at a distance of
40 cm in front of a convergent lens of focal
length 20 cm. A convergent mir
View Question A thin strip 10 cm long is on a U shaped wire
of negligible resistance and it is connected to
a spring of spring constan
View Question The reverse breakdown voltage of a Zener
diode is 5.6 V in the given circuit.
The current IZ through the Zener is :
View Question Water from a pipe is coming at a rate of
100 litres per minute. If the radius of the pipe
is 5 cm, the Reynolds number f
View Question The bob of a simple pendulum has mass 2g and
a charge of 5.0 μC. It is at rest in a uniform
horizontal electric field of
View Question A circular coil having N turns and radius r
carries a current I. It is held in the XZ plane in
a magnetic field B$${\mat
View Question A boy's catapult is made of rubber cord which
is 42 cm long, with 6 mm diameter of
cross-section and of negligible mass.
View Question Voltage rating of a parallel plate capacitor is
500V. Its dielectric can withstand a maximum
electric field of 106 V/m.
View Question Two identical beakers A and B contain equal
volumes of two different liquids at 60°C each
and left to cool down. Liquid
View Question Four particles A, B, C and D with masses
mA = m, mB = 2m, mC = 3m and mD = 4m are
at the corners of a square. They have
View Question