JEE Main 2023 (Online) 12th April Morning Shift

Correct statements for the given reaction are :

A. Compound '\(\mathrm{B}\)' is aromatic
B. The completion of above reaction is very slow
C. 'A' shows tautomerism
D. The bond lengths of C-C in compound $B$ are found to be same
Choose the c...

The two products formed in above reaction are -

'A' in the above reaction is:

In the following reaction

'A' is

The major product 'P' formed in the following sequence of reactions is

The value of \(x\) in compound 'D' is _________.

The mass of NH\(_3\) produced when 131.8 kg of cyclohexanecarbaldehyde undergoes Tollen's test is ________ kg. (Nearest Integer)
Molar Mass of
C = 12g/mol
N = 14g/mol
O = 16g/mol

Three organic compounds A, B and \(\mathrm{C}\) were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The \(\mathrm{R}_{\mathrm{f}}\) value of the most polar compound is ____________ $$\ti...

In an oligopeptide named Alanylglycylphenyl alanyl isoleucine, the number of \(\mathrm{sp}^{2}\) hybridised carbons is __________.

The bond order and magnetic property of acetylide ion are same as that of

The reaction \(2 \mathrm{NO}+\mathrm{Br}_{2} \rightarrow 2 \mathrm{NOBr}\)
takes places through the mechanism given below:
\(\mathrm{NO}+\mathrm{Br}_{2} \Leftrightarrow \mathrm{NOBr}_{2}\) (fast)
$$\mathrm{NOBr}_{2}+\mathrm{NO} \rightarrow ...

The incorrect statement regarding the reaction given below is

Match List I with List II

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...

Given below are two statement: one is labelled as Assertion \(\mathbf{A}\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: \(5 \mathrm{f}\) electrons can participate in bonding to a far greater extent than \(4 \mathrm{f}\) e...

For lead storage battery pick the correct statements
A. During charging of battery, \(\mathrm{PbSO}_{4}\) on anode is converted into \(\mathrm{PbO}_{2}\)
B. During charging of battery, \(\mathrm{PbSO}_{4}\) on cathode is converted into $$\m...

Match List I with List II

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...

At \(600 \mathrm{~K}\), the root mean square (rms) speed of gas \(\mathrm{X}\) (molar mass \(=40\) ) is equal to the most probable speed of gas \(\mathrm{Y}\) at \(90 \mathrm{~K}\). The molar mass of the gas \(\mathrm{Y}\) is ___________ $$...

Match List I with List II

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...

An analyst wants to convert \(1 \mathrm{~L} \mathrm{~HCl}\) of \(\mathrm{pH}=1\) to a solution of \(\mathrm{HCl}\) of \(\mathrm{pH} ~2\). The volume of water needed to do this dilution is __________ \(\mathrm{mL}\). (Nearest integer)

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : In the Ellingham diagram, a sharp change in slope of the line is observed for \(\mathrm{Mg} \rightarrow \mathrm{MgO}\) at $$\...

Given below are two statements :
Statement I : Boron is extremely hard indicating its high lattice energy.
Statement II : Boron has highest melting and boiling point compared to its other group members.
In the light of the above statements,...

Given below are two statements :
Statement I : \(\mathrm{SbCl}_{5}\) is more covalent than \(\mathrm{SbCl}_{3}\)
Statement II: The higher oxides of halogens also tend to be more stable than the lower ones.
In the light of the above statemen...

Match List I with List II

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The density of alkali metals is in the order :

In the given reaction cycle

X, Y and Z respectively are :

80 mole percent of \(\mathrm{MgCl}_{2}\) is dissociated in aqueous solution. The vapour pressure of \(1.0 ~\mathrm{molal}\) aqueous solution of \(\mathrm{MgCl}_{2}\) at \(38^{\circ} \mathrm{C}\) is ____________ $$\mathrm{mm} ~\mathrm{Hg.} ~...

A metal chloride contains \(55.0 \%\) of chlorine by weight . \(100 \mathrm{~mL}\) vapours of the metal chloride at STP weigh \(0.57 \mathrm{~g}\). The molecular formula of the metal chloride is
(Given: Atomic mass of chlorine is $$35.5 \ma...

Values of work function (W\(_0\)) for a few metals are given below

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Four gases A, B, C and D have critical temperatures \(5.3,33.2,126.0\) and \(154.3 \mathrm{~K}\) respectively. For their adsorption on a fixed amount of charcoal, the correct order is:

One mole of an ideal gas at \(350 \mathrm{~K}\) is in a \(2.0 \mathrm{~L}\) vessel of thermally conducting walls, which are in contact with the surroundings. It undergoes isothermal reversible expansion from 2.0 L to \(3.0 \mathrm{~L}\) aga...