JEE Main 2019 (Online) 10th April Morning Slot
Paper was held on Wed, Apr 10, 2019 3:30 AM
View Questions

Chemistry

Increasing rate of SN1 reaction in the following compounds is :
View Question
The regions of the atmosphere, where clouds form and where we live, respectively, are :
View Question
Ethylamine (C2H5NH2) can be obtained from N-ethylphatalimide on treatment with :
View Question
Amylopectin is compound of :
View Question
Consider the following table : .tg {border-collapse:collapse;border-spacing:0;border-color:#9ABAD9;} .tg td{font-famil
View Question
Consider the hydrated ions of Ti2+, V2+, Ti3+, and Sc3+. The correct order of their spin-only magnetic moments is :
View Question
Consider the statements S1 and S2 S1 : Conductivity always increases with decrease in the concentration of electrolyte.
View Question
The isoelectronic set of ions is :
View Question
Major products of the following reaction are :
View Question
The major product of the following reaction is :
View Question
The correct order of catenation is :
View Question
A bacterial infection in an internal wound grows as N'(t) = N0 exp(t), where the time t is in hours. A does of antibioti
View Question
A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation $${x \ove
View Question
Consider the following statements (a) The pH of a mixture containing 400 mL of 0.1 M H2SO4 and 400 mL of 0.1 M NaOH will
View Question
The alloy used in the construction of aircrafts is :
View Question
At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of O2 for complete combustion, and 40 mL of C
View Question
A process will be spontaneous at all temperatures if :
View Question
The principle of column chromatography is :
View Question
At room temperature, a dilute solution of urea is prepared by dissolving 0.60 of urea in 360 g of water. If the vapour p
View Question
The major product of the following reaction is :
View Question
The species that can have a trans-isomer is : (en = ehane-1, 2-diamine, ox = oxalate)
View Question
Three complexes, [CoCl(NH3)5] 2+(I), [Co(NH3)5H2O]3+ (II) and [Co(NH3)6] 3+(III) absorb light in the visible region. The
View Question
Match the refining methods (Column I) with metals (Column II). .tg {border-collapse:collapse;border-spacing:0;} .tg td
View Question
The synonym for water gas when used in the production of methanol is :
View Question
During the change of O2 to O2- , the incoming electron goes to the orbital :
View Question
The major product of the following reaction is :
View Question
The oxoacid of sulphur that does not contain bond between sulphur atoms is
View Question
The graph between $${\left| \psi \right|^2}$$ and r (radial distance) is shown below. This represents :
View Question
The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions
View Question
Which of the following is a condensation polymer?
View Question

Mathematics

The region represented by| x – y | $$ \le $$ 2 and | x + y| $$ \le $$ 2 is bounded by a :
View Question
All the pairs (x, y) that satisfy the inequality $${2^{\sqrt {{{\sin }^2}x - 2\sin x + 5} }}.{1 \over {{4^{{{\sin }^2}y}
View Question
If $$\alpha $$ and $$\beta $$ are the roots of the quadratic equation, x2 + x sin $$\theta $$ - 2 sin $$\theta $$ = 0,
View Question
If a > 0 and z = $${{{{\left( {1 + i} \right)}^2}} \over {a - i}}$$, has magnitude $$\sqrt {{2 \over 5}} $$, then $$
View Question
If y = y(x) is the solution of the differential equation $${{dy} \over {dx}} = \left( {\tan x - y} \right){\sec ^2}x$$,
View Question
If the length of the perpendicular from the point ($$\beta $$, 0, $$\beta $$) ($$\beta $$ $$ \ne $$ 0) to the line, $${x
View Question
If $${\Delta _1} = \left| {\matrix{ x & {\sin \theta } & {\cos \theta } \cr { - \sin \theta } & { -
View Question
Assume that each born child is equally likely to be a boy or a girl. If two families have two children each, then the co
View Question
Which one of the following Boolean expressions is a tautology?
View Question
Let f(x) = x2 , x $$ \in $$ R. For any A $$ \subseteq $$ R, define g (A) = { x $$ \in $$ R : f(x) $$ \in $$ A}. If S = [
View Question
If $$\mathop {\lim }\limits_{x \to 1} {{{x^4} - 1} \over {x - 1}} = \mathop {\lim }\limits_{x \to k} {{{x^3} - {k^3}} \o
View Question
If a directrix of a hyperbola centred at the origin and passing through the point (4, –2$$\sqrt 3 $$ ) is 5x = 4$$\sqrt
View Question
If the circles x2 + y2 + 5Kx + 2y + K = 0 and 2(x2 + y2) + 2Kx + 3y –1 = 0, (K$$ \in $$R), intersect at the points P
View Question
If$$f(x) = \left\{ {\matrix{ {{{\sin (p + 1)x + \sin x} \over x}} & {,x < 0} \cr q & {,x = 0} \cr
View Question
The sum $${{3 \times {1^3}} \over {{1^3}}} + {{5 \times ({1^3} + {2^3})} \over {{1^2} + {2^2}}} + {{7 \times \left( {{1^
View Question
If $$\int {{{dx} \over {{{\left( {{x^2} - 2x + 10} \right)}^2}}}} = A\left( {{{\tan }^{ - 1}}\left( {{{x - 1} \over 3}}
View Question
The value of $$\int\limits_0^{2\pi } {\left[ {\sin 2x\left( {1 + \cos 3x} \right)} \right]} dx$$, where [t] denotes the
View Question
If the coefficients of x2 and x3 are both zero, in the expansion of the expression (1 + ax + bx2 ) (1 – 3x)15 in power
View Question
If Q(0, –1, –3) is the image of the point P in the plane 3x – y + 4z = 2 and R is the point (3, –1, –2), then the area (
View Question
The line x = y touches a circle at the point (1,1). If the circle also passes through the point (1, – 3), then its radiu
View Question
Let f : R $$ \to $$ R be differentiable at c $$ \in $$ R and f(c) = 0. If g(x) = |f(x)| , then at x = c, g is :
View Question
Let A (3, 0, –1), B(2, 10, 6) and C(1, 2, 1) be the vertices of a triangle and M be the midpoint of AC. If G divides BM
View Question
If the system of linear equations x + y + z = 5 x + 2y + 2z = 6 x + 3y + $$\lambda $$z = $$\mu $$, ($$\lambda $$, $$\mu
View Question
The number of 6 digit numbers that can be formed using the digits 0, 1, 2, 5, 7 and 9 which are divisible by 11 and no d
View Question
If for some x $$ \in $$ R, the frequency distribution of the marks obtained by 20 students in a test is : .tg {border-
View Question
ABC is a triangular park with AB = AC = 100 metres. A vertical tower is situated at the mid-point of BC. If the angles o
View Question
If a1, a2, a3, ............... an are in A.P. and a1 + a4 + a7 + ........... + a16 = 114, then a1 + a6 + a11 + a16 is eq
View Question
Let f(x) = ex – x and g(x) = x2 – x, $$\forall $$ x $$ \in $$ R. Then the set of all x $$ \in $$ R, where the function h
View Question
$$\mathop {\lim }\limits_{n \to \infty } \left( {{{{{(n + 1)}^{1/3}}} \over {{n^{4/3}}}} + {{{{(n + 2)}^{1/3}}} \over {{
View Question
If the line x – 2y = 12 is tangent to the ellipse $${{{x^2}} \over {{a^2}}} + {{{y^2}} \over {{b^2}}} = 1$$ at the point
View Question

Physics

Figure shows charge (q) versus voltage (V) graph for series and parallel combination of two given capacitors. The capaci
View Question
A current of 5 A passes through a copper conductor (resistivity = 1.7 × 10–8 $$\Omega $$m) of radius of cross-section 5
View Question
In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure .tg {bo
View Question
One plano-convex and one plano-concave lens of same radius of curvature 'R' but of different materials are joined side b
View Question
A ball is thrown upward with an initial velocity V0 from the surface of the earth. The motion of the ball is affected by
View Question
A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperatur
View Question
A thin disc of mass M and radius R has mass per unit area $$\sigma $$(r) = kr2 where r is the distance from its centre.
View Question
Two coaxial discs, having moments of inertia I1 and I1/2, are rotating with respective angular velocities $$\omega $$1
View Question
The electric field of a plane electromagnetic wave is given by $$\overrightarrow E = {E_0}\widehat i\cos (kz)cos(\omega
View Question
A particle of mass m is moving along a trajectory given by x = x0 + a cos$$\omega $$1t y = y0 + b sin$$\omega $$2t The t
View Question
A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbits in a plane due to magneti
View Question
Two wires A & B are carrying currents I1 & I2 as shown in the figure. The separation between them is d. A third
View Question
A ray of light AO in vacuum is incident on a glass slab at angle 60° and refracted at angle 30° along OB as shown in the
View Question
A message signal of frequency 100 MHz and peak voltage 100 V is used to execute amplitude modulation on a carrier wave o
View Question
In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the
View Question
A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the
View Question
In a photoelectric effect experiment the threshold wavelength of the light is 380 nm. If the wavelentgh of incident ligh
View Question
The displacement of a damped harmonic oscillator is given by x(t ) = e–0.1t cos (10$$\pi $$t + f). Here t is in seconds.
View Question
Two radioactive materials A and B have decay constants 10$$\lambda $$ and $$\lambda $$, respectively. It initially they
View Question
A 25 × 10–3 m3 volume cylinder is filled with 1 mol of O2 gas at room temperature (300K). The molecular diameter of O2,
View Question
A stationary source emits sound waves of frequency 500 Hz. Two observers moving along a line passing through the source
View Question
Given below in the the left column are different modes of communication using the kinds of waves given the right column.
View Question
An n-p-n transistor operates as a common emitter amplifier, with a power gain of 60 dB. The input circuit resistance is
View Question
n moles of an ideal gas with constant volume heat capcity CV undergo an isobaric expansion by certain volume. The ratio
View Question
A moving coil galvanometer allows a full scale current of 10–4 A. A series resistance of 2 M$$\Omega $$ is required to c
View Question
In the given circuit, an ideal voltmeter connected across the 10$$\Omega $$ resistance reads 2V. The internal resistance
View Question
A uniformly charged ring of radius 3a and total charge q is placed in xy-plane centred at origin. A point charge q is mo
View Question
The value of acceleration due to gravity at Earth's surface is 9.8 ms–2. The altitude above its surface at which the acc
View Question
The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of thier densities is 13.6. Their
View Question
Two particles, of masses M and 2M, moving, as shown, with speeds of 10 m/s and 5 m/s, collide elastically at the origin.
View Question
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12