JEE Main 2021 (Online) 26th August Morning Shift

Paper was held on
Thu, Aug 26, 2021 3:30 AM

## Chemistry

Which one of the following complexes is violet in colour?

View Question Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?

View Question The major products formed in the following reaction sequence A and B are :

View Question The major product formed in the following reaction is :

View Question The major product formed in the following reaction is :

View Question Given below are two statements :Statement I : The limiting molar conductivity of KCl (strong electrolyte) is higher comp

View Question The correct options for the products A and B of the following reactions are :

View Question Given below are two statements.Statement I : In the titration between strong acid and weak base methyl orange is suitabl

View Question Among the following compounds I-IV, which one forms a yellow precipitate on reacting sequentially with (i) NaOH (ii) dil

View Question Given below are two statements.Statement I : According to Bohr's model of an atom, qualitatively the magnitude of veloci

View Question The correct sequential addition of reagents in the preparation of 3-nitrobenzoic acid from benzene is :

View Question Excess of isobutane on reaction with Br2 in presence of light at 125$$^\circ$$C gives which one of the following, as the

View Question AB3 is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is __________. (Integer answer)

View Question These are physical properties of an element(A) Sublimation enthalpy(B) Ionisation enthalpy(C) Hydration enthalpy(D) Elec

View Question Of the following four aqueous solutions, total number of those solutions whose freezing point is lower than that of 0.10

View Question The OH$$-$$ concentration in a mixture of 5.0 mL of 0.0504 M NH4Cl and 2 mL of 0.0210 M NH3 solution is x $$\times$$ 10$

View Question The number of 4f electrons in the ground statement electronic configuration of Gd2+ is ___________. [Atomic number of Gd

View Question The ratio of number of water molecules in Mohr's salt and potash alum is ____________ $$\times$$ 10$$-$$1. (Integer answ

View Question The following data was obtained for chemical reaction given below at 975 K.2NO(g) + 2H2(g) $$\to$$ N2(g) + 2H2O(g)The or

View Question The Born-Haber cycle for KCl is evaluated with the following data :$${\Delta _f}{H^\Theta }$$ for KCl = $$-$$436.7 kJ mo

View Question The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at pH 12.5 will be ______________. (Integer an

View Question An aqueous KCl solution of density 1.20 g mL$$-$$1 has a molality of 3.30 mol kg$$-$$1. The molarity of the solution in

View Question ## Mathematics

The mean and standard deviation of 20 observations were calculated as 10 and 2.5 respectively. It was found that by mist

View Question Let y = y(x) be a solution curve of the differential equation $$(y + 1){\tan ^2}x\,dx + \tan x\,dy + y\,dx = 0$$, $$x \i

View Question Let A and B be independent events such that P(A) = p, P(B) = 2p. The largest value of p, for which P (exactly one of A,

View Question Let $$\theta \in \left( {0,{\pi \over 2}} \right)$$. If the system of linear equations$$(1 + {\cos ^2}\theta )x + {\si

View Question Let $$f(x) = \cos \left( {2{{\tan }^{ - 1}}\sin \left( {{{\cot }^{ - 1}}\sqrt {{{1 - x} \over x}} } \right)} \right)$$,

View Question Out of all the patients in a hospital 89% are found to be suffering from heart ailment and 98% are suffering from lungs

View Question The equation $$\arg \left( {{{z - 1} \over {z + 1}}} \right) = {\pi \over 4}$$ represents a circle with :

View Question If a line along a chord of the circle 4x2 + 4y2 + 120x + 675 = 0, passes through the point ($$-$$30, 0) and is tangent t

View Question The value of $$\int\limits_{{{ - 1} \over {\sqrt 2 }}}^{{1 \over {\sqrt 2 }}} {{{\left( {{{\left( {{{x + 1} \over {x - 1

View Question If $$A = \left( {\matrix{
{{1 \over {\sqrt 5 }}} & {{2 \over {\sqrt 5 }}} \cr
{{{ - 2} \over {\sqrt 5 }}} &a

View Question If the sum of an infinite GP a, ar, ar2, ar3, ....... is 15 and the sum of the squares of its each term is 150, then the

View Question Let $$z = {{1 - i\sqrt 3 } \over 2}$$, $$i = \sqrt { - 1} $$. Then the value of $$21 + {\left( {z + {1 \over z}} \right)

View Question The sum of all integral values of k (k $$\ne$$ 0) for which the equation $${2 \over {x - 1}} - {1 \over {x - 2}} = {2 \o

View Question If $${}^1{P_1} + 2.{}^2{P_2} + 3.{}^3{P_3} + .... + 15.{}^{15}{P_{15}} = {}^q{P_r} - s,0 \le s \le 1$$, then $${}^{q + s

View Question A wire of length 36 m is cut into two pieces, one of the pieces is bent to form a square and the other is bent to form a

View Question The area of the region $$S = \{ (x,y):3{x^2} \le 4y \le 6x + 24\} $$ is ____________.

View Question The locus of a point, which moves such that the sum of squares of its distances from the points (0, 0), (1, 0), (0, 1),

View Question If y = y(x) is an implicit function of x such that loge(x + y) = 4xy, then $${{{d^2}y} \over {d{x^2}}}$$ at x = 0 is equ

View Question The number of three-digit even numbers, formed by the digits 0, 1, 3, 4, 6, 7 if the repetition of digits is not allowed

View Question Let a, b $$\in$$ R, b $$\in$$ 0, Define a function $$f(x) = \left\{ {\matrix{
{a\sin {\pi \over 2}(x - 1),} & {f

View Question ## Physics

The fractional change in the magnetic field intensity at a distance 'r' from centre on the axis of current carrying coil

View Question The magnitude of vectors $$\overrightarrow {OA} $$, $$\overrightarrow {OB} $$ and $$\overrightarrow {OC} $$ in the given

View Question Car B overtakes another car A at a relative speed of 40 ms$$-$$1. How fast will the image of car B appear to move in the

View Question Inside a uniform spherical shell :(1) the gravitational field is zero(2) the gravitational potential is zero(3) the grav

View Question Two narrow bores of diameter 5.0 mm and 8.0 mm are joined together to form a U-shaped tube open at both ends. If this U-

View Question An electric appliance supplies 6000 J/min heat to the system. If the system delivers a power of 90W. How long it would t

View Question An inductor coil stores 64 J of magnetic field energy and dissipates energy at the rate of 640 W when a current of 8A is

View Question A series LCR circuit driven by 300 V at a frequency of 50 Hz contains a resistance R = 3 k$$\Omega$$, an inductor of ind

View Question Identify the logic operation carried out by the given circuit :-

View Question A particular hydrogen like ion emits radiation of frequency 2.92 $$\times$$ 1015 Hz when it makes transition from n = 3

View Question In a photoelectric experiment ultraviolet light of wavelength 280 nm is used with lithium cathode having work function $

View Question In the given figure, the emf of the cell is 2.2 V and if internal resistance is 0.6$$\Omega$$. Calculate the power dissi

View Question A solid metal sphere of radius R having charge q is enclosed inside the concentric spherical shell of inner radius a and

View Question The rms speeds of the molecules of Hydrogen, Oxygen and Carbon dioxide at the same temperature are VH, VO and VC respect

View Question In a Screw Gauge, fifth division of the circular scale coincides with the reference line when the ratchet is closed. The

View Question What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an eq

View Question The initial mass of a rocket is 1000 kg. Calculate at what rate the fuel should be burnt so that the rocket is given an

View Question If E, L, M and G denote the quantities as energy, angular momentum, mass and constant of gravitation respectively, then

View Question The material filled between the plates of a parallel plate capacitor has resistivity 200 $$\Omega$$m. The value of capac

View Question Statement I : By doping silicon semiconductor with pentavalent material, the electrons density increases.Statement II :

View Question A uniform chain of length 3 meter and mass 3 kg overhangs a smooth table with 2 meter lying on the table. If k is the ki

View Question The electric field in a plane electromagnetic wave is given by $$\overrightarrow E = 200\cos \left[ {\left( {{{0.5 \tim

View Question Two spherical balls having equal masses with radius of 5 cm each are thrown upwards along the same vertical direction at

View Question A soap bubble of radius 3 cm is formed inside the another soap bubble of radius 6 cm. The radius of an equivalent soap b

View Question Two short magnetic dipoles m1 and m2 each having magnetic moment of 1 Am2 are placed at point O and P respectively. The

View Question Two travelling waves produces a standing wave represented by equation,y = 1.0 mm cos(1.57 cm$$-$$1) x sin(78.5 s$$-$$1)t

View Question White light is passed through a double slit and interference is observed on a screen 1.5 m away. The separation between

View Question Consider a badminton racket with length scales as shown in the figure.If the mass of the linear and circular portions of

View Question