JEE Main 2019 (Online) 9th January Evening Slot
Paper was held on Wed, Jan 9, 2019 9:30 AM
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Chemistry

The entropy change associated with the conversion of 1 kg of ice at 273 K to water vapours at 383 K is : (Specific heat
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For the following reaction, in the mass of water produced from 445 g of C57H110O6 is : 2C57H110O6(s) + 163 O2(g) $$ \to
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Which of the following conditions in drinking water causes methemoglobinemia?
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The metal that forms nitride by reacting directly with N2 of air, is :
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The correct match between Item I and Item II is : .tg {border-collapse:collapse;border-spacing:0;} .tg td{font-family:
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For coagulation of arsenious sulphate sol, which one of the following salt solution will be most effective ?
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The complex that has highest crystal field splitting energy ($$\Delta $$), is :
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The pH of rain water, is approximately :
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For the reaction, 2A + B $$ \to $$ products, when the concentrations of A and B both were doubled, the rate of the
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If the standard electrode potential for a cell is 2 V at 300 K, the equilibrium constant (K) for the reaction Zn(s) + C
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The temporary hardness of water is due to :
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Good reducing nature of H3PO2 is attributed to the presence of :
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Which of the following combination of statements is true regarding the interpretation of the atomic orbitals ? (a) An e
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In which of the following process, the bond order has increased and paramagnetic character has charged to diamagnetic ?
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When the first electron gain enthalpy $$\left( {{\Delta _{eg}}H} \right)$$ of oxygen is $$-$$ 141 kJ/mol, its second ele
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The transition element that has lowest enthalpy of atomisation, is :
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At 100oC, copper (Cu) has FCC unit cell structure with cell edge length of x $$\mathop A\limits^o $$. What is the approx
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A solution containing 62 g ethylene glycol in 250 g water is cooled to $$-$$ 10oC. If Kf for water is 1.86 K kg mol$$-$$
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Homoleptic octahedral complexes of a metal ion 'M3+' with three monodenate ligands L1, L2 and L3 adsorb wavelenths in th
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The major product in the following reaction is :
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The major product of the following reaction is :
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The major product obtained in the following reaction is :
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The major product of the following reaction is :
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Consider the following reversible chemical reactions : The relation between K1 and K2 is :
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The correct sequence of amino acids present in the tripeptide given below is :
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The products formed in the reaction of cumene with O2 followed by treatment with dil. HCl are :
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The tests performed on compound X and their inferences are : .tg {border-collapse:collapse;border-spacing:0;} .tg td{
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Which of the following compounds is not aromatic ?
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The correct statement regarding the given Ellingham diagram is :
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The increasing basicity order of the following compounds is :
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Mathematics

The sum of the following series $$1 + 6 + {{9\left( {{1^2} + {2^2} + {3^2}} \right)} \over 7} + {{12\left( {{1^2} + {2^2
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For each x$$ \in $$R, let [x] be the greatest integer less than or equal to x. Then $$\mathop {\lim }\limits_{x \to {0^
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If  x = sin$$-$$1(sin10) and y = cos$$-$$1(cos10), then y $$-$$ x is equal to :
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If  0 $$ \le $$ x < $${\pi \over 2}$$,  then the number of values of x for which sin x $$-$$ sin 2x +
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Let f : [0,1] $$ \to $$ R be such that f(xy) = f(x).f(y), for all x, y $$ \in $$ [0, 1], and f(0) $$ \ne $$ 0. If
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The coefficient of t4 in the expansion of $${\left( {{{1 - {t^6}} \over {1 - t}}} \right)^3}$$ is :
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Let z0 be a root of the quadratic equation, x2 + x + 1 = 0, If z = 3 + 6iz$$_0^{81}$$ $$-$$ 3iz$$_0^{93}$$, then arg z
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If the system of linear equations x $$-$$ 4y + 7z = g        3y $$-$$ 5z = h $$-$$2x
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The area of the region A = {(x, y) : 0 $$ \le $$ y $$ \le $$x |x| + 1  and  $$-$$1 $$ \le $$ x $$ \
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Let S be the set of all triangles in the xy-plane, each having one vertex at the origin and the other two vertices lie o
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If both the roots of the quadratic equation x2 $$-$$ mx + 4 = 0 are real and distinct and they lie in the interval [1, 5
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The logical statement [ $$ \sim $$ ( $$ \sim $$ p $$ \vee $$ q) $$ \vee $$ (p $$ \wedge $$ r)] $$ \wedge $$ ($$ \sim $$
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Let a, b and c be the 7th, 11th and 13th terms respectively of a non-constant A.P. If these are also three consecutive
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The equation of the plane containing the straight line $${x \over 2} = {y \over 3} = {z \over 4}$$ and perpendicular to
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If   $$A = \left[ {\matrix{ {{e^t}} & {{e^{ - t}}\cos t} & {{e^{ - t}}\sin t} \cr {{e^t}}
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If   $$f\left( x \right) = \int {{{5{x^8} + 7{x^6}} \over {{{\left( {{x^2} + 1 + 2{x^7}} \right)}^2}}}} \
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A data consists of n observations : x1, x2, . . . . . . ., xn.     If     $$\sum\limi
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Let f be a differentiable function from R to R such that $$\left| {f\left( x \right) - f\left( y \right)} \right| \le 2
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If   x $$=$$ 3 tan t and y $$=$$ 3 sec t, then the value of $${{{d^2}y} \over {d{x^2}}}$$ at t $$ = {\pi
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Let A(4, $$-$$ 4) and B(9, 6) be points on the parabola, y2 = 4x. Let C be chosen on the arc AOB of the parabola, where
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The number of natural numbers less than 7,000 which can be formed by using the digits 0, 1, 3, 7, 9 (repitition of digit
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Let A = {x $$ \in $$ R : x is not a positive integer}. Define a function $$f$$ : A $$ \to $$  R   as
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The number of all possible positive integral values of $$\alpha $$  for which the roots of the quadratic equation,
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Let the equations of two sides of a triangle be 3x $$-$$ 2y + 6 = 0 and 4x + 5y $$-$$ 20 = 0. If the orthocentre of this
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If the lines x = ay + b, z = cy + d and x = a'z + b', y = c'z + d' are perpendicular, then :
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If   $$\int\limits_0^{{\pi \over 3}} {{{\tan \theta } \over {\sqrt {2k\,\sec \theta } }}} \,d\theta = 1
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An urn contains 5 red and 2 green balls. A ball is drawn at random from the urn. If the drawn ball is green, then a red
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If the circles x2 + y2 $$-$$ 16x $$-$$ 20y + 164 = r2   and  (x $$-$$ 4)2 + (y $$-$$ 7)2 = 36 inte
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A hyperbola has its centre at the origin, passes through the point (4, 2) and has transverse axis of length 4 along the
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Let  $$\overrightarrow a = \widehat i + \widehat j + \sqrt 2 \widehat k,$$   $$\overrightarrow
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Physics

At a given instant, say t = 0, two radioactive substance A and B have equal activities. the ratio $${{{R_B}} \over {{R_
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A power transmission line feeds input power at 2300 V to a srep down transformer with its primary windings having 4000 t
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A force acts on a 2 kg object so that its position is given as a function of time as x = 3t2 + 5. What is the work done
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The energy associated with electric field is (UE) and with magnetic field is (UB) for an electromagnetic wave in free sp
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A particle having the same charge as of electron moves in a ciurcular path of radius 0.5 cm under the influence of a mag
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Two point charges q1$$\left( {\sqrt {10} \mu C} \right)$$ and q2($$-$$ 25 $$\mu $$C) are placed on the x-axis at x = 1 m
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Expression for time in terms of G(universal gravitional constant), h (Planck constant) and c (speed of light) is proport
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The top of a water tank is open to air and its water level is mainted. It is giving out 0.74 m3 water per minute through
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The energy required to take a satellite to a height 'h' above Earth surface (radius of Earth = 6.4 $$ \times $$ 103 km)
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Two Carnot engines A and B are operated in series. The first one, A, receives heat at T1 (= 600 K) and rejects to a rese
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A series AC circuit containing an inductor (20 mH), a capacitor (120 $$\mu $$F) and a resistor (60 $$\Omega $$) is drive
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A particle is executing simple harmonic motion (SHM) of amplitude A, along the x-axis, about x = 0. When its potential E
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A mass of 10 kg is suspended vertically by a rope from the roof. When a horizontal force is applied on the rope at some
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A 15 g mass of nitrogen gas is enclosed in a vessel at a temperature 27oC. Amount of heat transferred to the gas, so tha
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In a Young's double slit experiment, the slits are placed 0.320 mm apart. Light of wavelength $$\lambda $$ = 500 nm is i
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Two plane mirrors are inclined to each other such that a ray of light incident on the first mirror (M1) and parallel to
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One of the two identical conducting wires of length L is bent in the form of a circular loop and the other one into a ci
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A rod of mass 'M' and length '2L' is suspended at its middle by a wire. It exhibits torsional oscillations; If two masse
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The pitch and the number of divisions, on the circular scale, for a given screw gauge are 0.5 mm and 100 respectively.
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Charge is distributed within a sphere of radius R with a volume charge density $$\rho \left( r \right) = {A \over {{r^2}
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In a car race on straight road, car A takes a time t less than car B at the finish and passes finishing point with a spe
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The magnetic field associated with a light wave is given, at the origin, by B = B0 [sin(3.14 $$ \times $$ 107)ct + sin(6
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A musician using an open flute of length 50 cm producess second harmonic sound waves. A person runs towards the musician
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In a communication system operating at wavelength 800 nm, only one percent of source frequency is available as signal ba
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The position co-ordinates of a particle moving in a 3-D coordinate system is given by x = a cos$$\omega $$t y = a sin$$
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Ge and Si diodes start conducting at 0.3 V and 0.7 V respectively. In the following figure if Ge diode connection are re
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A carbon resistance has a following colour code. What is the value of the resistance ?
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In the given circuit the the internal resistance of the 18 V cell is negligible. If R1 = 400 $$\Omega $$, R3 = 100 $$\Om
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A parallel plate capacitor with square plates is filled with four dielecytrics of dielectrics constants K1, K2, K3, K4 a
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A rod of length 50 cm is pivoted at one end. It is raised such that if makes an angle of 30o from the horizontal as sho
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