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JEE Main 2020 (Online) 9th January Morning Slot

Exam Held on Thu Jan 09 2020 03:30:00 GMT+0000 (Coordinated Universal Time)
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Chemistry

Identify (A) in the following reaction sequence : <img src="https://imagex.cdn.e...
For the following reactions<br> $$A\buildrel {700K} \over \longrightarrow {\mat... The correct order of heat of combustion for following alkadienes is :<br> <img s... The K<sub>sp</sub> for the following dissociation is 1.6 × 10<sup>–5</sup><br><b... According to the following diagram, A reduces BO<sub>2</sub> when the temperatur... If the magnetic moment of a dioxygen species is 1.73 B.M, it may be : [Pd(F)(Cl)(Br)(I)]<sup>2–</sup> has n number of geometrical isomers. Then, the s... A chemist has 4 samples of artificial sweetener A, B, C and D. To identify these... 'X' melts at low temperature and is a bad conductor of electricity in both liqui... If enthalpy of atomisation for Br<sub>2(1)</sub> is x kJ/mol and bond enthalpy f... The increasing order of basicity for the following intermediates is (from weak t... B has a smaller first ionization enthalpy than Be. Consider the following statem... The acidic, basic and amphoteric oxides, respectively, are : The major product Z obtained in the following reaction scheme is : <img src="htt... Which of these will produce the highest yield in Friedel Crafts reaction? The compound that cannot act both as oxidising and reducing agent is : Complex X of composition Cr(H<sub>2</sub>O)<sub>6</sub>Cl<sub>n</sub> has a spin... The de Broglie wavelength of an electron in the 4th Bohr orbit is : The major product (Y) in the following reactions is : <img src="https://imagex.c... The electronic configurations of bivalent europium and trivalent cerium are<br> ... The hardness of a water sample containing 10<sup>–3</sup> M MgSO<sub>4</sub> exp... The molarity of HNO<sub>3 </sub>in a sample which has density 1.4 g/mL and mass ... 108 g of silver (molar mass 108 g mol<sup>–1</sup>) is deposited at cathode from... The mass percentage of nitrogen in histamine is _____. How much amount of NaCl should be added to 600 g of water ($$\rho $$= 1.00 g/mL... Mathematics A spherical iron ball of 10 cm radius is coated with a layer of ice of uniform t... If the number of five digit numbers with distinct digits and 2 at the 10<sup>th<... Let z be complex number such that <br>$$\left| {{{z - i} \over {z + 2i}}} \righ...
In a box, there are 20 cards, out of which 10 are lebelled as A and the remainin...
The value of <br>$$\int\limits_0^{2\pi } {{{x{{\sin }^8}x} \over {{{\sin }^8}x +... If ƒ'(x) = tan<sup>–1</sup>(secx + tanx),$$ - {\pi \over 2} &lt; x &lt; {\pi ...
The number of real roots of the equation, <br>e<sup>4x</sup> + e<sup>3x</sup> – ...
If the matrices A = $$\left[ {\matrix{ 1 &amp; 1 &amp; 2 \cr 1 &amp; 3 &... Negation of the statement : <br><br>$$\sqrt 5 $$is an integer or 5 is irrationa... The product$${2^{{1 \over 4}}}{.4^{{1 \over {16}}}}{.8^{{1 \over {48}}}}{.16^{{...
Let the observations x<sub>i</sub> (1 $$\le$$ i $$\le$$ 10) satisfy the <br>...
A circle touches the y-axis at the point (0, 4) and passes through the point (2,...
The value of<br> $${\cos ^3}\left( {{\pi \over 8}} \right)$$$${\cos}\left( {{3\... Let ƒ be any function continuous on [a, b] and twice differentiable on (a, b). I... If e<sub>1</sub> and e<sub>2</sub> are the eccentricities of the ellipse,$${{{x...
Let C be the centroid of the triangle with vertices (3, –1), (1, 3) and (2, 4). ...
If for all real triplets (a, b, c), ƒ(x) = a + bx + cx<sup>2</sup>; then $$\int\... The integral$$\int {{{dx} \over {{{(x + 4)}^{{8 \over 7}}}{{(x - 3)}^{{6 \over ...
The number of distinct solutions of the equation<br> $${\log _{{1 \over 2}}}\le... If for some$$\alpha $$and$$\beta $$in R, the intersection of the following t... If$$f(x) = \left\{ {\matrix{ {{{\sin (a + 2)x + \sin x} \over x};} &amp; {x ...
The coefficient of x<sup>4</sup> is the expansion of (1 + x + x<sup>2</sup>)<sup...
If for x $$\ge$$ 0, y = y(x) is the solution of the differential equation<br> ...
The projection of the line segment joining the points (1, –1, 3) and (2, –4, 11)...
If the vectors, $$\overrightarrow p = \left( {a + 1} \right)\widehat i + a\wide... Physics A quantity f is given by$$f = \sqrt {{{h{c^5}} \over G}} $$where c is speed of... Consider a force$$\overrightarrow F = - x\widehat i + y\widehat j$$. The wor... Consider a sphere of radius R which carries a uniform charge density$$\rho $$. ... A long, straight wire of radius a carries a current distributed uniformly over i... The electric fields of two plane electromagnetic plane waves in vacuum are given... A body A of mass m is moving in a circular orbit of radius R about a planet. Ano... A particle moving with kinetic energy E has de Broglie wavelength$$\lambda $$. ... Consider two ideal diatomic gases A and B at some temperature T. Molecules of th... If the screw on a screw-gauge is given six rotations, it moves by 3 mm on the ma... A vessel of depth 2h is half filled with a liquid of refractive index$$2\sqrt 2...
The aperture diameter of a telescope is 5m. The separation between the moon and ...
Two particles of equal mass m have respective <br>initial velocities $$u\widehat... Radiation, with wavelength 6561$$\mathop A\limits^o $$falls on a metal surface... In the given circuit diagram, a wire is joining points B and D. The current in t... Which of the following is an equivalent cyclic process corresponding to the ther... A charged particle of mass 'm' and charge 'q' moving under the influence of unif... Three harmonic waves having equal frequency$$\nu $$and same intensity$${I_0}$... An electric dipole of moment <br>$\$\overrightarrow p = \left( { - \widehat i - ...
Water flows in a horizontal tube (see figure). <br>The pressure of water changes...
One end of a straight uniform 1m long bar is pivoted on horizontal table. It is ...
In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is pr...
The distance x covered by a particle in one dimensional motion varies with time ...
A body of mass m = 10 kg is attached to one end of a wire of length 0.3 m. The m...
Both the diodes used in the circuit shown are assumed to be ideal and have negli...

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