JEE Main 2017 (Online) 8th April Morning Slot
Paper was held on
Sat, Apr 8, 2017 3:30 AM
Chemistry
Among the following, correct statement is :
View Question Excess of NaOH (aq) was added to 100 mL of FeCl3 (aq) resulting into 2.14 g of Fe(OH)3 . The molarity of FeCl3 (aq) is
View Question Among the following, the incorrect statement is :
View Question For a reaction, A(g) $$ \to $$ A($$\ell $$); $$\Delta $$H= $$-$$ 3RT.
The correct statement for the reaction is :
View Question If the shortest wavelength in Lyman series of hydrogen atom is A, then the longestwavelength in Paschen series of He+ is
View Question What is the standard reduction potential (Eo) for Fe3+ $$ \to $$ Fe ?
Given that :
Fe2+ + 2e$$-$$ $$ \to $$ Fe; $$E_{F{
View Question 5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be
3.82oC. If Na2SO4 is 81.5% io
View Question Additin of sodium hydroxide solution to a weak acid (HA)results in a buffer of pH 6. If ionition constant of HA is 10$$-
View Question The rate of a reaction A doubles on increasing the temperature from 300 to 310 K. By how much, the temperature of reacti
View Question The enthalpy change on freezing of 1 mol of water at 5oC to ice at −5oC is :
(Given $$\Delta $$fusH = 6 kJ mol$$-$$1 at
View Question Which of the following is paramagnetic ?
View Question The pair of compounds having metals in their highest oxidation state is :
View Question sp3d2 hybridization is not displayed by :
View Question Identify the pollutant gases largely responsible for the discoloured and
lustreless nature of marble of the Taj Mahal.
View Question In which of the following reactions, hydrogen peroxide acts as an oxidizing
agent ?
View Question Consider the following ionization enthalpies of two elements 'A' and 'B' .
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View Question Consider the following standard electrode potentials (Eo in volts) in aqueous solution :
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View Question A metal ‘M’ reacts with nitrogen gas to afford ‘M3N’. ‘M3N’ on heating at high temperature gives back ‘M’ and on
reactio
View Question The number of S = O and S − OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :
View Question A mixture containing the following four compounds is extracted with $$1M$$ $$HCl.$$ The compound that goes to aqueous la
View Question Which of the following statements is not true about partition chromatography?
View Question Among the following, the essential amino acid is :
View Question The reason for “drug induced poisoning” is :
View Question A solution containing a group-IV cation gives a precipitate on passing H2S. A solution of this precipitate in dil.HCl pr
View Question Which of the following compounds will not undergo Friedel Craft’s reaction with benzene ?
View Question The major product expected from the following reaction is :
View Question The major product of the following reaction is :
View Question The major product of the following reaction is :
View Question The IUPAC name of the following compound is :
View Question The major product of the following reaction is :
View Question Mathematics
Let z$$ \in $$C, the set of complex numbers. Then the equation, 2|z + 3i| $$-$$ |z $$-$$ i| = 0 represents :
View Question Let f(x) = 210.x + 1 and g(x)=310.x $$-$$ 1. If (fog) (x) = x, then x is equal to :
View Question If all the words, with or without meaning, are written using the letters of the word QUEEN and are arranged as in Englis
View Question If the arithmetic mean of two numbers a and b, a > b > 0, is five times their geometric mean, then $${{a + b} \ov
View Question Let p(x) be a quadratic polynomial such that p(0)=1. If p(x) leaves remainder 4 when divided by x$$-$$ 1 and it leaves r
View Question Let A be any 3 $$ \times $$ 3 invertible matrix. Then which one of the following is not always true ?
View Question If (27)999 is divided by 7, then the remainder is :
View Question The number of real values of $$\lambda $$ for which the system of linear equations
2x + 4y $$-$$ $$\lambda $$z = 0
4x +
View Question If the sum of the first n terms of the series $$\,\sqrt 3 + \sqrt {75} + \sqrt {243} + \sqrt {507} + ......$$ is $$
View Question The tangent at the point (2, $$-$$2) to the curve, x2y2 $$-$$ 2x = 4(1 $$-$$ y) does not pass through the point :
View Question $$\mathop {\lim }\limits_{x \to 3} $$ $${{\sqrt {3x} - 3} \over {\sqrt {2x - 4} - \sqrt 2 }}$$ is equal to :
View Question The integral
$$\int {\sqrt {1 + 2\cot x(\cos ecx + \cot x)\,} \,\,dx} $$
$$\left( {0 < x < {\pi \over 2}} \right
View Question If a point P has co-ordinates (0, $$-$$2) and Q is any point on the circle, x2 + y2 $$-$$ 5x $$-$$ y + 5 = 0, then the
View Question If y = $${\left[ {x + \sqrt {{x^2} - 1} } \right]^{15}} + {\left[ {x - \sqrt {{x^2} - 1} } \right]^{15}},$$
then (x2 $$
View Question The curve satisfying the differential equation, ydx $$-$$(x + 3y2)dy = 0 and passing through the point (1, 1), also pas
View Question The locus of the point of intersection of the straight lines,
tx $$-$$ 2y $$-$$ 3t = 0
x $$-$$ 2ty + 3 = 0 (t $$ \in $
View Question The area (in sq. units) of the smaller portion enclosed between the curves, x2 + y2 = 4 and y2 = 3x, is :
View Question The integral $$\int_{{\pi \over {12}}}^{{\pi \over 4}} {\,\,{{8\cos 2x} \over {{{\left( {\tan x + \cot x} \right)}^3}}
View Question If two parallel chords of a circle, having diameter 4units, lie on the opposite sides of the center and subtend angles $
View Question If the common tangents to the parabola, x2 = 4y and the circle, x2 + y2 = 4 intersect at the point P, then the distance
View Question Consider an ellipse, whose center is at the origin and its major axis is along the x-axis. If its eccentricity is $${3 \
View Question The coordinates of the foot of the perpendicular from the point (1, $$-$$2, 1) on the plane containing the lines, $${{x
View Question The area (in sq. units) of the parallelogram whose diagonals are along the vectors $$8\widehat i - 6\widehat j$$ and $$3
View Question The mean age of 25 teachers in a school is 40 years. A teacher retires at the age of 60 years and a new teacher is appo
View Question The line of intersection of the planes $$\overrightarrow r .\left( {3\widehat i - \widehat j + \widehat k} \right) = 1\,
View Question Three persons P, Q and R independently try to hit a target. I the probabilities of their hitting the target are $${3 \ov
View Question An unbiased coin is tossed eight times. The probability of obtaining at least one head and at least one tail is :
View Question If
$$S = \left\{ {x \in \left[ {0,2\pi } \right]:\left| {\matrix{
0 & {\cos x} & { - \sin x} \cr
{\sin
View Question The value of tan-1 $$\left[ {{{\sqrt {1 + {x^2}} + \sqrt {1 - {x^2}} } \over {\sqrt {1 + {x^2}} - \sqrt {1 - {x^2}} }
View Question The proposition $$\left( { \sim p} \right) \vee \left( {p \wedge \sim q} \right)$$ is equivalent to :
View Question Physics
Time (T), velocity (C) and angular momentum (h) are chosen as fundamentalquantities instead of mass, length and time. In
View Question Which graph corresponds to an object moving with a constant negative
acceleration and a positive velocity ?
View Question A 1 kg block attached to a spring vibrates with a frequency of 1 Hz on a frictionless horizontal table. Two springs iden
View Question An object is dropped from a height h from the ground. Every time it hits the ground it looses 50% of its kinetic energy.
View Question In an experiment, a sphere of aluminium of mass 0.20 kg is heated upto 150oC. Immediately, it is put into water of volum
View Question Moment of inertia of an equilateral triangular lamina ABC, about the axis
passing through its centre O and perpendicular
View Question A compressive force, F is applied at the two ends of a long thin steel rod. It is heated, simultaneously, such that its
View Question An engine operates by taking n moles of an ideal gas through the cycle ABCDA shown in figure. The thermal efficiency of
View Question An ideal gas has molecules with 5 degrees of freedom. The ratio of specific heats at constant pressure (Cp ) and at cons
View Question The ratio of maximum acceleration to maximum velocity in a simple harmonic motion is 10 s−1 . At, t = 0 the displacement
View Question Two wires W1 and W2 have the same radius r and respective densities $$\rho $$1 and $$\rho $$2 such that ρ2 = 4$$\rho
View Question There is a uniform electrostatic field in a region. The potential at various points on a small sphere centred at $$P,$$
View Question The energy stored in the electric field produced by a metal sphere is 4.5 J. If the sphere contains 4 $$\mu $$C charge,
View Question In a certain region static electric and magnetic fields exist. The magnetic field is given by $$\overrightarrow B = {B_
View Question A magnetic dipole in a constant magnetic field has :
View Question In a physical balance working on the principle of moments, when 5 mg weight is placed on the left pan, the beam becomes
View Question A potentiometer PQ is set up to compare two resistances as shown in the figure. The ammeter A in the circuit reads 1.0 A
View Question A uniform disc of radius R and mass M is free to rotate only about its axis. A string is wrapped over its rim and a body
View Question A small circular loop of wire of radius a is located at the centre of a much larger circular wire loop of radius b. The
View Question What is the conductivity of a semiconductor sale having electron concentration of $$5 \times {10^{18}}\,\,{m^{ - 3}},$$
View Question Magnetic field in a plane electromagnetic wave is given by
$$\overrightarrow B $$ = B0 sin (k x + $$\omega $$t) $$\wideh
View Question A single slit of width b is illuminated by a coherent monochromatic light of wavelength $$\lambda $$. If the second and
View Question Let the refractive index of a denser medium with respect to a rarer medium be n12 and its critical angle be θC . At an a
View Question The maximum velocity of the photoelectrons emitted from the surface is v when light of frequency n falls on a metal surf
View Question According to Bohr’s theory, the time averaged magnetic field at the centre (i.e. nucleus) of a hydrogen atom due to the
View Question A signal of frequency 20 kHz and peak voltage of 5 Volt is used to modulate a carrier wave of frequency 1.2 MHz and peak
View Question Two deuterons undergo nuclear fusion to form a Helium nucleus. Energy released in this process is : (given binding energ
View Question The V-I characteristic of a diode is shown in the figure. The ratio of forward to reverse bias
resistance is :
View Question If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the speed with which the ea
View Question A 9 V battery with internal resistance of 0.5 $$\Omega $$ is connected across an infinite network as shown in the figu
View Question