JEE Main 2024 (Online) 31st January Evening Shift

Identify major product 'P' formed in the following reaction.

Identify the name reaction.

Identify structure of 2,3-dibromo-1-phenylpentane.

The correct order of reactivity in electrophilic substitution reaction of the following compounds is :

Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is ________.

From the vitamins \(\mathrm{A}, \mathrm{B}_1, \mathrm{~B}_6, \mathrm{~B}_{12}, \mathrm{C}, \mathrm{D}, \mathrm{E}\) and \(\mathrm{K}\), the number of vitamins that can be stored in our body is _________.

Which of the following is least ionic?

A diatomic molecule has a dipole moment of \(1.2 \mathrm{~D}\). If the bond distance is \(1 \mathrm{~A}^{\circ}\), then fractional charge on each atom is _________ \(\times 10^{-1}\) esu.
(Given \(1 \mathrm{~D}=10^{-18}\) esucm)

\(\mathrm{A}_{(\mathrm{g})} \rightleftharpoons \mathrm{B}_{(\mathrm{g})}+\frac{\mathrm{C}}{2}(\mathrm{g})\) The correct relationship between \(\mathrm{K}_{\mathrm{P}}, \alpha\) and equilibrium pressure \(\mathrm{P}\) is

\(\mathrm{r}=\mathrm{k}[\mathrm{A}]\) for a reaction, \(50 \%\) of \(\mathrm{A}\) is decomposed in 120 minutes. The time taken for \(90 \%\) decomposition of \(\mathrm{A}\) is _________ minutes.

The azo-dye \((Y)\) formed in the following reactions is
Sulphanilic acid \(+\mathrm{NaNO}_2+\mathrm{CH}_3 \mathrm{COOH} \rightarrow \mathrm{X}\).

Given below are two statements :
Statement I : Aniline reacts with con. \(\mathrm{H}_2 \mathrm{SO}_4\), followed by heating at \(453-473 \mathrm{~K}\) gives \(\mathrm{p}\)-aminobenzene sulphonic acid, which gives blood red colour in the 'La...

A compound \((x)\) with molar mass \(108 \mathrm{~g} \mathrm{~mol}^{-1}\) undergoes acetylation to give product with molar mass \(192 \mathrm{~g} \mathrm{~mol}^{-1}\). The number of amino groups in the compound \((x)\) is ___________.

Select the option with correct property -

Match List I with List II

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Choose the correct statements from the following
A. \(\mathrm{Mn}_2 \mathrm{O}_7\) is an oil at room temperature
B. \(\mathrm{V}_2 \mathrm{O}_4\) reacts with acid to give \(\mathrm{VO}_2{ }^{2+}\)
C. \(\mathrm{CrO}\) is a basic oxide
D. $$\...

The values of conductivity of some materials at $298.15 \mathrm{~K}^{-1} ~\text{in} ~\mathrm{Sm}^{-1}$ are $2.1 \times 10^3$, $1.0 \times 10^{-16}, 1.2 \times 10,3.91,1.5 \times 10^{-2}, 1 \times 10^{-7}, 1.0 \times 10^3$. The number of con...

Identify A and B in the following reaction sequence.

Major product of the following reaction is -

Given below are two statements:
Statement I : Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature.
Statement II : \(\mathrm{AlCl}_3\) upon hydrolysis in acidified aqueous solution forms octahedral $$\left[...

Given below are two statements:
Statement I : \(\mathrm{S}_8\) solid undergoes disproportionation reaction under alkaline conditions to form \(\mathrm{S}^{2-}\) and \(\mathrm{S}_2 \mathrm{O}_3{ }^{2-}\).
Statement II : $$\mathrm{ClO}_4^{-}$...

Choose the correct statements from the following
A. All group 16 elements form oxides of general formula \(\mathrm{EO}_2\) and \(\mathrm{EO}_3\), where \(\mathrm{E}=\mathrm{S}, \mathrm{Se}, \mathrm{Te}\) and \(\mathrm{Po}\). Both the types ...

Consider the following elements.

Which of the following is/are true about \(\mathrm{A}^{\prime}, \mathrm{B}^{\prime}, \mathrm{C}^{\prime}\) and \(\mathrm{D}^{\prime}\) ?
A. Order of atomic radii: $$\mathrm{B}^{\prime}<\mathrm{A}^{\prime}<\...

The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method...

In the reaction of potassium dichromate, potassium chloride and sulfuric acid (conc.), the oxidation state of the chromium in the product is \((+)\) _________.

Number of moles of \(\mathrm{H}^{+}\) ions required by \(1 \mathrm{~mole}\) of \(\mathrm{MnO}_4^{-}\) to oxidise oxalate ion to \(\mathrm{CO}_2\) is _________.

A sample of \(\mathrm{CaCO}_3\) and \(\mathrm{MgCO}_3\) weighed \(2.21 \mathrm{~g}\) is ignited to constant weight of \(1.152 \mathrm{~g}\). The composition of mixture is :
(Given molar mass in $$\mathrm{g} \mathrm{~mol}^{-1} \mathrm{CaCO}_...

The molarity of \(1 \mathrm{~L}\) orthophosphoric acid \(\left(\mathrm{H}_3 \mathrm{PO}_4\right)\) having \(70 \%\) purity by weight (specific gravity \(1.54 \mathrm{~g} \mathrm{~cm}^{-3}\)) is __________ \(\mathrm{M}\).
(Molar mass of $$\m...

The four quantum numbers for the electron in the outer most orbital of potassium (atomic no. 19) are

If 5 moles of an ideal gas expands from \(10 \mathrm{~L}\) to a volume of \(100 \mathrm{~L}\) at \(300 \mathrm{~K}\) under isothermal and reversible condition then work, \(\mathrm{w}\), is \(-x \mathrm{~J}\). The value of \(x\) is _________...