JEE Main 2024 (Online) 27th January Evening Shift

Major product formed in the following reaction is a mixture of :

Phenolic group can be identified by a positive:

Match List - I with List - II.

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The molecular formula of second homologue in the homologous series of mono carboxylic acids is

The order of relative stability of the contributing structure is :

Choose the correct answer from the options given below :

The incorrect statement regarding conformations of ethane is :

Bond line formula of HOCH(CN)\(_2\) is :

Total number of compounds with Chiral carbon atoms from following is _________.

Which structure of protein remains intact after coagulation of egg white on boiling?

The number of non-polar molecules from the following is _________. \(\mathrm{HF}, \mathrm{H}_2 \mathrm{O}, \mathrm{SO}_2, \mathrm{H}_2, \mathrm{CO}_2, \mathrm{CH}_4, \mathrm{NH}_3, \mathrm{HCl}, \mathrm{CHCl}_3, \mathrm{BF}_3\)

Time required for completion of \(99.9 \%\) of a First order reaction is ________ times of half life \(\left(t_{1 / 2}\right)\) of the reaction.

Identity the incorrect pair from the following :

Identify from the following species in which \(\mathrm{d}^2 \mathrm{sp}^3\) hybridization is shown by central atom :

The Spin only magnetic moment value of square planar complex \(\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NH}_2 \mathrm{CH}_3\right)\right] \mathrm{Cl}\) is _________ B.M. (Nearest integer)
(Given atomic number f...

Given below are two statements :
Statement (I) : In the Lanthanoids, the formation \(\mathrm{Ce}^{+4}\) is favoured by its noble gas configuration.
Statement (II) : \(\mathrm{Ce}^{+4}\) is a strong oxidant reverting to the common +3 state.
...

Choose the correct option having all the elements with \(\mathrm{d}^{10}\) electronic configuration from the following :

Total number of ions from the following with noble gas configuration is _________. \(\mathrm{Sr}^{2+}(z=38), \mathrm{Cs}^{+}(z=55), \mathrm{La}^{2+}(z=57), \mathrm{Pb}^{2+}(z=82), \mathrm{Yb}^{2+}(z=70)\) and \(\mathrm{Fe}^{2+}(z=26)\)

Which of the following statements is not correct about rusting of iron?

The hydrogen electrode is dipped in a solution of \(\mathrm{pH}=3\) at \(25^{\circ} \mathrm{C}\). The potential of the electrode will be _________ \(\times 10^{-2} \mathrm{~V}\).
$$\left(\frac{2.303 \mathrm{RT}}{\mathrm{F}}=0.059 \mathrm{~V...

Identify B formed in the reaction.
\(\mathrm{Cl}-\left(\mathrm{CH}_2\right)_4-\mathrm{Cl} \xrightarrow{\text { excess } \mathrm{NH}_3} \mathrm{~A} \xrightarrow{\mathrm{NaOH}} \mathrm{B}+\mathrm{H}_2 \mathrm{O}+\mathrm{NaCl}\)

Which among the following halide/s will not show \(\mathrm{S_N 1}\) reaction:
(A) \(\mathrm{H}_2 \mathrm{C}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{Cl}\)
(B) \(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{Cl}\)
(C)
(D)
Choose the most appropri...

The final product A, formed in the following reaction sequence is:

Given below are two statements :
Statement (I) : Oxygen being the first member of group 16 exhibits only -2 oxidation state.
Statement (II) : Down the group 16 stability of +4 oxidation state decreases and +6 oxidation state increases.
In t...

1 mole of \(\mathrm{PbS}\) is oxidised by "\(\mathrm{X}\)" moles of \(\mathrm{O}_3\) to get "\(\mathrm{Y}\)" moles of \(\mathrm{O}_2\). \(\mathrm{X}+\mathrm{Y}=\) _________.

The technique used for purification of steam volatile water immiscible substances is :

Which of the following cannot function as an oxidising agent?

The quantity which changes with temperature is :

\(9.3 \mathrm{~g}\) of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is \(100 \%\) completed is _________ \(\times 10^{-1} \mathrm{~g}\).
(Given mol...

Volume of \(3 \mathrm{M} \mathrm{~NaOH}\) (formula weight \(40 \mathrm{~g} \mathrm{~mol}^{-1}\) ) which can be prepared from \(84 \mathrm{~g}\) of \(\mathrm{NaOH}\) is __________ \(\times 10^{-1} \mathrm{dm}^3\).

For a certain thermochemical reaction \(\mathrm{M} \rightarrow \mathrm{N}\) at \(\mathrm{T}=400 \mathrm{~K}, \Delta \mathrm{H}^{\ominus}=77.2 \mathrm{~kJ} \mathrm{~mol}^{-1}, \Delta \mathrm{S}=122 \mathrm{~JK}^{-1}, \log\) equilibrium const...