JEE Main 2022 (Online) 25th June Evening Shift

In the given reaction

'A' can be

The major product formed in the following reaction, is

Which of the following conditions or reaction sequence will NOT give acetophenone as the major product?

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : A mixture contains benzoic acid and napthalene. The pure benzoic acid can be separated out by the use of benzene.
Reason R ...

How many of the given compounds will give a positive Biuret test ____________ ?
Glycine, Glycylalanine, Tripeptide, Biuret

Amongst BeF2, BF3, H2O, NH3, CCl4 and HCl, the number of molecules with non-zero net dipole moment is ____________.

At 345 K, the half life for the decomposition of a sample of a gaseous compound initially at 55.5 kPa was 340 s. When the pressure was 27.8 kPa, the half life was found to be 170 s. The order of the reaction is ____________. [integer answer...

Match List I with List II

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An antiseptic dettol is a mixture of two compounds 'A' and 'B' where A has 6\(\pi\) electrons and B has 2\(\pi\) electrons. What is 'B'?

Amongst the following, the major product of the given chemical reaction is

Which of the following ketone will NOT give enamine on treatment with secondary amines? [where t-Bu is \(-\)C(CH3)3]

Amongst FeCl3.3H2O, K3[Fe(CN)6] and [Co(NH3)6]Cl3, the spin-only magnetic moment value of the inner-orbital complex that absorbs light at shortest wavelength is ____________ B.M. [nearest integer]

The metal ion (in gaseous state) with lowest spin-only magnetic moment value is :

The correct order of reduction potentials of the following pairs is
A. Cl2/Cl\(-\)
B. I2/I\(-\)
C. Ag+/Ag
D. Na+/Na
E. Li+/Li
Choose the correct answer from the options given below.

A solution of Fe2(SO4)3 is electrolyzed for 'x' min with a current of 1.5 A to deposit 0.3482 g of Fe. The value of x is ___________. [nearest integer]
Given : 1 F = 96500 C mol\(-\)1
Atomic mass of Fe = 56 g mol\(-\)1

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Polluted water may have a value of BOD of the order of 17 ppm.
Reason R : BOD is a measure of oxygen required to oxidise bo...

A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm at 06:00 am when the temperature is 27\(^\circ\)C. At 03:00 pm, when the temperature is 45\(^\circ\), the pressure in the tank will be _________ atm. [nearest integer...

The Ksp for bismuth sulphide (Bi2S3) is 1.08 \(\times\) 10\(-\)73. The solubility of Bi2S3 in mol L\(-\)1 at 298 K is :

Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : The amphoteric nature of water is explained by using Lewis acid/base concept.
Reason R : Water acts as an acid with NH3 and ...

Given below are two statements.
Statement I : During electrolytic refining, blister copper deposits precious metals.
Statement II : In the process of obtaining pure copper by electrolysis method, copper blister is used to make the anode.
In...

The number of bridged oxygen atoms present in compound B formed from the following reactions is
Pb(NO3)2 \(\buildrel {673\,K} \over \longrightarrow\) A + PbO + O2
A \(\buildrel {Dimerise} \over \longrightarrow\) B

Consider the following reactions:
PCl3 + H2O \(\to\) A + HCl
A + H2O \(\to\) B + HCl
The number of ionisable protons present in the product B is _______________.

The correct order of electron gain enthalpies of Cl, F, Te and Po is

The Novolac polymer has mass of 963 g. The number of monomer units present in it are

The neutralization occurs when 10 mL of 0.1M acid 'A' is allowed to react with 30 mL of 0.05 M base M(OH)2. The basicity of the acid 'A' is __________.
[M is a metal]

During halogen test, sodium fusion extract is boiled with concentrated HNO3 to

Solute A associates in water. When 0.7 g of solute A is dissolved in 42.0 g of water, it depresses the freezing point by 0.2\(^\circ\)C. The percentage association of solute A in water, is :
[Given : Molar mass of A = 93 g mol\(-\)1. Molal ...

A protein 'A' contains 0.30% of glycine (molecular weight 75). The minimum molar mass of the protein 'A' is __________ \(\times\) 103 g mol\(-\)1 [nearest integer]

The minimum energy that must be possessed by photons in order to produce the photoelectric effect with platinum metal is :
[Given : The threshold frequency of platinum is 1.3 \(\times\) 1015 s\(-\)1 and h = 6.6 \(\times\) 10\(-\)34 J s.]

At 25\(^\circ\)C and 1 atm pressure, the enthalpy of combustion of benzene (I) and acetylene (g) are \(-\) 3268 kJ mol\(-\)1 and \(-\)1300 kJ mol\(-\)1, respectively. The change in enthalpy for the reaction 3 C2H2(g) \(\to\) C6H6 (I), is :

Let p be the plane passing through the intersection of the planes \(\overrightarrow r \,.\,\left( {\widehat i + 3\widehat j - \widehat k} \right) = 5\) and $$\overrightarrow r \,.\,\left( {2\widehat i - \widehat j + \widehat k} \right) = 3$...

Let l1 be the line in xy-plane with x and y intercepts \({1 \over 8}\) and \({1 \over {4\sqrt 2 }}\) respectively, and l2 be the line in zx-plane with x and z intercepts \(- {1 \over 8}\) and \(- {1 \over {6\sqrt 3 }}\) respectively. If d...

Water is being filled at the rate of 1 cm3 / sec in a right circular conical vessel (vertex downwards) of height 35 cm and diameter 14 cm. When the height of the water level is 10 cm, the rate (in cm2 / sec) at which the wet conical surface...

If the angle made by the tangent at the point (x0, y0) on the curve \(x = 12(t + \sin t\cos t)\), \(y = 12{(1 + \sin t)^2}\), \(0 < t < {\pi \over 2}\), with the positive x-axis is \({\pi \over 3}\), then y0 is equal to:

Let \(f(x) = |(x - 1)({x^2} - 2x - 3)| + x - 3,\,x \in R\). If m and M are respectively the number of points of local minimum and local maximum of f in the interval (0, 4), then m + M is equal to ____________.

The area of the region enclosed between the parabolas y2 = 2x \(-\) 1 and y2 = 4x \(-\) 3 is

The coefficient of x101 in the expression \({(5 + x)^{500}} + x{(5 + x)^{499}} + {x^2}{(5 + x)^{498}} + \,\,.....\,\, + \,\,{x^{500}}\), x > 0, is

If the sum of the co-efficient of all the positive even powers of x in the binomial expansion of \({\left( {2{x^3} + {3 \over x}} \right)^{10}}\) is \({5^{10}} - \beta \,.\,{3^9}\), then \(\beta\) is equal to ____________.

A circle touches both the y-axis and the line x + y = 0. Then the locus of its center is :

Let z1 and z2 be two complex numbers such that \({\overline z _1} = i{\overline z _2}\) and \(\arg \left( {{{{z_1}} \over {{{\overline z }_2}}}} \right) = \pi\). Then :

If \({b_n} = \int_0^{{\pi \over 2}} {{{{{\cos }^2}nx} \over {\sin x}}dx,\,n \in N}\), then

The value of b > 3 for which \(12\int\limits_3^b {{1 \over {({x^2} - 1)({x^2} - 4)}}dx = {{\log }_e}\left( {{{49} \over {40}}} \right)}\), is equal to ___________.

If \(y = y(x)\) is the solution of the differential equation \(2{x^2}{{dy} \over {dx}} - 2xy + 3{y^2} = 0\) such that \(y(e) = {e \over 3}\), then y(1) is equal to :

The line y = x + 1 meets the ellipse \({{{x^2}} \over 4} + {{{y^2}} \over 2} = 1\) at two points P and Q. If r is the radius of the circle with PQ as diameter then (3r)2 is equal to :

Let the eccentricity of the hyperbola \({{{x^2}} \over {{a^2}}} - {{{y^2}} \over {{b^2}}} = 1\) be \({5 \over 4}\). If the equation of the normal at the point \(\left( {{8 \over {\sqrt {5} }},{{12} \over {5}}} \right)\) on the hyperbola is ...

The value of \({\tan ^{ - 1}}\left( {{{\cos \left( {{{15\pi } \over 4}} \right) - 1} \over {\sin \left( {{\pi \over 4}} \right)}}} \right)\) is equal to :

\(\mathop {\lim }\limits_{x \to {\pi \over 2}} \left( {{{\tan }^2}x\left( {{{(2{{\sin }^2}x + 3\sin x + 4)}^{{1 \over 2}}} - {{({{\sin }^2}x + 6\sin x + 2)}^{{1 \over 2}}}} \right)} \right)\) is equal to

Let \(f(x) = \left[ {2{x^2} + 1} \right]\) and \(g(x) = \left\{ {\matrix{ {2x - 3,} & {x < 0} \cr {2x + 3,} & {x \ge 0} \cr } } \right.\), where [t] is the greatest integer \(\le\) t. Then, in the open interval (\(-\)1, 1), the ...

The negation of the Boolean expression ((\(\sim\) q) \(\wedge\) p) \(\Rightarrow\) ((\(\sim\) p) \(\vee\) q) is logically equivalent to :

The system of equations
\(- kx + 3y - 14z = 25\)
\(- 15x + 4y - kz = 3\)
\(- 4x + y + 3z = 4\)
is consistent for all k in the set