JEE Main 2023 (Online) 10th April Morning Shift

Paper was held on
Mon, Apr 10, 2023 3:30 AM

## Chemistry

The compound which does not exist is

View Question The enthalpy change for the adsorption process and micelle formation respectively are

View Question The number of molecules and moles in 2.8375 litres of O$$_2$$ at STP are respectively

View Question The one that does not stabilize 2$$^\circ$$ and 3$$^\circ$$ structures of proteins is

View Question Lime reacts exothermally with water to give 'A' which has low solubility in water. Aqueous solution of 'A' is often used

View Question Which of the following is used as a stabilizer during the concentration of sulphide ores?

View Question The major product 'P' formed in the given reaction is

View Question Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to :

View Question Which of the following statements are correct?
(A) The M$$^{3+}$$/M$$^{2+}$$ reduction potential for iron is greater tha

View Question The octahedral diamagnetic low spin complex among the following is :

View Question Using column chromatography, mixture of two compounds 'A' and 'B' was separated. 'A' eluted first, this indicates 'B' ha

View Question Given below are two reactions, involved in the commercial production of dihydrogen (H$$_2$$). The two reactions are carr

View Question Given
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View Question Match List I with List II
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View Question Isomeric amines with molecular formula C$$_8$$H$$_{11}$$N give the following tests
Isomer (P) $$\Rightarrow$$ Can be pre

View Question Given below are two statements:
Statement I : Aqueous solution of K$$_2$$Cr$$_2$$O$$_7$$ is preferred as a primary stand

View Question Suitable reaction condition for preparation of Methyl phenyl ether is

View Question Match List I with List II
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View Question Identify the correct order of reactivity for the following pairs towards the respective mechanism
Choose the correct an

View Question The pair from the following pairs having both compounds with net non-zero dipole moment is

View Question In potassium ferrocyanide, there are ________ pairs of electrons in the $$t_{2g}$$ set of orbitals.

View Question The number of bent-shaped molecule/s from the following is __________
N$$_3^-$$, NO$$_2^-$$, I$$_3^-$$, O$$_3$$, SO$$_2$

View Question The number of correct statement/s involving equilibria in physical processes from the following is ________
(A) Equilibr

View Question The sum of lone pairs present on the central atom of the interhalogen IF$$_5$$ and IF$$_7$$ is _________

View Question The number of incorrect statement/s about the black body from the following is __________
(A) Emit or absorb energy in t

View Question At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is ___

View Question A molecule undergoes two independent first order reactions whose respective half lives are 12 min and 3 min. If both the

View Question In the following reactions, the total number of oxygen atoms in X and Y is ___________.
Na$$_2$$O + H$$_2$$O $$\to$$ 2X

View Question $$\mathrm{FeO_4^{2 - }\buildrel { + 2.2V} \over
\longrightarrow F{e^{3 + }}\buildrel { + 0.70V} \over
\longrightarrow

View Question If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be 0.3, then the observed free

View Question ## Mathematics

If $$I(x) = \int {{e^{{{\sin }^2}x}}(\cos x\sin 2x - \sin x)dx} $$ and $$I(0) = 1$$, then $$I\left( {{\pi \over 3}} \ri

View Question The shortest distance between the lines $${{x + 2} \over 1} = {y \over { - 2}} = {{z - 5} \over 2}$$ and $${{x - 4} \ove

View Question Let the ellipse $$E:{x^2} + 9{y^2} = 9$$ intersect the positive x and y-axes at the points A and B respectively. Let the

View Question Let two vertices of a triangle ABC be (2, 4, 6) and (0, $$-$$2, $$-$$5), and its centroid be (2, 1, $$-$$1). If the imag

View Question Let O be the origin and the position vector of the point P be $$ - \widehat i - 2\widehat j + 3\widehat k$$. If the posi

View Question The negation of the statement $$(p \vee q) \wedge (q \vee ( \sim r))$$ is :

View Question Let P be the point of intersection of the line $${{x + 3} \over 3} = {{y + 2} \over 1} = {{1 - z} \over 2}$$ and the pla

View Question The slope of tangent at any point (x, y) on a curve $$y=y(x)$$ is $${{{x^2} + {y^2}} \over {2xy}},x > 0$$. If $$y(2) = 0

View Question If $$f(x) = {{(\tan 1^\circ )x + {{\log }_e}(123)} \over {x{{\log }_e}(1234) - (\tan 1^\circ )}},x > 0$$, then the least

View Question If the coefficient of $${x^7}$$ in $${\left( {ax - {1 \over {b{x^2}}}} \right)^{13}}$$ and the coefficient of $${x^{ - 5

View Question An arc PQ of a circle subtends a right angle at its centre O. The mid point of the arc PQ is R. If $$\overrightarrow {OP

View Question Let N denote the sum of the numbers obtained when two dice are rolled. If the probability that $${2^N}

View Question If A is a 3 $$\times$$ 3 matrix and $$|A| = 2$$, then $$|3\,adj\,(|3A|{A^2})|$$ is equal to :

View Question A square piece of tin of side 30 cm is to be made into a box without top by cutting a square from each corner and foldin

View Question $$96\cos {\pi \over {33}}\cos {{2\pi } \over {33}}\cos {{4\pi } \over {33}}\cos {{8\pi } \over {33}}\cos {{16\pi } \ove

View Question For the system of linear equations
$$2x - y + 3z = 5$$
$$3x + 2y - z = 7$$
$$4x + 5y + \alpha z = \beta $$,
which of the

View Question A line segment AB of length $$\lambda$$ moves such that the points A and B remain on the periphery of a circle of radius

View Question Let $$f$$ be a differentiable function such that $${x^2}f(x) - x = 4\int\limits_0^x {tf(t)dt} $$, $$f(1) = {2 \over 3}$$

View Question Let the first term $$\alpha$$ and the common ratio r of a geometric progression be positive integers. If the sum of squa

View Question Let the complex number $$z = x + iy$$ be such that $${{2z - 3i} \over {2z + i}}$$ is purely imaginary. If $${x} + {y^2}

View Question Let $$f:( - 2,2) \to R$$ be defined by $$f(x) = \left\{ {\matrix{
{x[x],} & { - 2

View Question Let $$y = p(x)$$ be the parabola passing through the points $$( - 1,0),(0,1)$$ and $$(1,0)$$. If the area of the region

View Question The number of elements in the set $$\{ n \in Z:|{n^2} - 10n + 19|

View Question If the mean of the frequency distribution
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View Question The number of permutations, of the digits 1, 2, 3, ..., 7 without repetition, which neither contain the string 153 nor t

View Question The coefficient of $$x^7$$ in $${(1 - x + 2{x^3})^{10}}$$ is ___________.

View Question Let a common tangent to the curves $${y^2} = 4x$$ and $${(x - 4)^2} + {y^2} = 16$$ touch the curves at the points P and

View Question The sum of all those terms, of the arithmetic progression 3, 8, 13, ...., 373, which are not divisible by 3, is equal to

View Question Some couples participated in a mixed doubles badminton tournament. If the number of matches played, so that no couple pl

View Question Let a, b, c be three distinct positive real numbers such that $${(2a)^{{{\log }_e}a}} = {(bc)^{{{\log }_e}b}}$$ and $${b

View Question ## Physics

Given below are two statements:
Statement I : If the number of turns in the coil of a moving coil galvanometer is double

View Question A physical quantity P is given as
$$P = {{{a^2}{b^3}} \over {c\sqrt d }}$$
The percentage error in the measurement of a,

View Question Given below are two statements:
Statement I : Pressure in a reservoir of water is same at all points at the same level o

View Question The energy of an electromagnetic wave contained in a small volume oscillates with

View Question A carrier wave of amplitude 15 V is modulated by a sinusoidal base band signal of magnitude 3 V. The ratio of maximum am

View Question The equivalent capacitance of the combination shown is :

View Question Consider two containers A and B containing monoatomic gases at the same Pressure (P), Volume (V) and Temperature (T). Th

View Question The range of the projectile projected at an angle of 15$$^\circ$$ with horizontal is 50 m. If the projectile is projecte

View Question A particle executes S.H.M. of amplitude A along x-axis. At t = 0, the position of the particle is $$x=\frac{A}{2}$$ and

View Question The de Broglie wavelength of a molecule in a gas at room temperature (300 K) is $$\lambda_1$$. If the temperature of the

View Question The equivalent resistance of the circuit shown below between points a and b is :

View Question An object is placed at a distance of 12 cm in front of a plane mirror. The virtual and erect image is formed by the mirr

View Question Two satellites of masses m and 3m revolve around the earth in circular orbits of radii r & 3r respectively. The ratio of

View Question The position-time graphs for two students A and B returning from the school to their homes are shown in figure.
(A) A l

View Question The angular momentum for the electron in Bohr's orbit is L. If the electron is assumed to revolve in second orbit of hyd

View Question Given below are two statements:
Statement I : Maximum power is dissipated in a circuit containing an inductor, a capacit

View Question Match List I with List II :
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View Question Assuming the earth to be a sphere of uniform mass density, the weight of a body at a depth $$d=\frac{R}{2}$$ from the su

View Question A zener diode of power rating 1.6 W is to be used as voltage regulator. If the zener diode has a breakdown of 8V and it

View Question A particle of mass m moving with velocity v collides with a stationary particle of mass 2m. After collision, they stick

View Question A transverse harmonic wave on a string is given by
$$y(x,t) = 5\sin (6t + 0.003x)$$
where x and y are in cm and t in sec

View Question 10 resistors each of resistance 10 $$\Omega$$ can be connected in such as to get maximum and minimum equivalent resistan

View Question A 1 m long metal rod XY completes the circuit as shown in figure. The plane of the circuit is perpendicular to the magne

View Question A closed circular tube of average radius 15 cm, whose inner walls are rough, is kept in vertical plane. A block of mass

View Question The decay constant for a radioactive nuclide is 1.5 $$\times$$ 10$$^{-5}$$ s$$^{-1}$$. Atomic weight of the substance is

View Question Unpolarised light of intensity 32 Wm$$^{-2}$$ passes through the combination of three polaroids such that the pass axis

View Question Three concentric spherical metallic shells X, Y and Z of radius a, b and c respectively [a

View Question If the earth suddenly shrinks to $$\frac{1}{64}$$th of its original volume with its mass remaining the same, the period

View Question The current required to be passed through a solenoid of 15 cm length and 60 turns in order of demagnetise a bar magnet o

View Question Two wires each of radius 0.2 cm and negligible mass, one made of steel and the other made of brass are loaded as shown i

View Question