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Given below are two statements:
Statement I: \( 3 \)-phenylpropene reacts with \( \text{HBr} \) and gives secondary alkyl bromide having a chiral carbon atom as the major product.
Statement II: Aryl chlorides and aryl cyanides can be prepared by Sandmeyer reactions as well as Gattermann reaction.
In the light of the above statements, choose the correct answer from the options given below:

An organic compound ‘\( P \)’ of molecular formula \( \mathrm{C_6H_{12}O_3} \) gives positive iodoform test but negative Tollen’s test. When ‘\( P \)’ is treated with dilute acid, it produces ‘\( Q \)’. ‘\( Q \)’ gives positive Tollen’s test and also iodoform test. The structure of ‘\( P \)’ is:

But-2-yne and hydrogen (one mole each) are separately treated with (i) Pd/C and (ii) Na/liq. \( \mathrm{NH_3} \) to give the products X and Y respectively.

Identify the incorrect statements.
A. X and Y are stereoisomers.
B. Dipole moment of X is zero.
C. Boiling point of X is higher than Y.
D. X and Y react with O₃ / Zn + H₂O to give different products.

Consider the isomers of hydrocarbon with molecular formula \( \text{C}_5\text{H}_{10} \). These isomers do not decolourise \( \text{KMnO}_4 \) solution. These isomers are subjected to chlorination with chlorine in presence of light to give monochloro compounds. The total number of monochloro compounds (structural isomers only) formed is ________.

Identify \( P \).

\( \mathrm{Ph{-}CH{=}CH_2} \xrightarrow[\mathrm{HBr}]{(\mathrm{PhCOO})_2} \mathrm{Product} \)

Consider the above reaction

A. The reaction proceeds through a more stable radical intermediate.

B. The role of peroxide is to generate H (Hydrogen radical).

C. During this reaction, benzene is formed as a byproduct.

D. 1-Bromo-2-phenylethane is formed as the minor product.

E. The same reaction in absence of peroxide proceeds via carbocation intermediate.

Identify the correct statements, Choose the correct answer from the options given below:

Consider the following reaction sequence

The percentage of nitrogen in product ‘T’ formed is ____________ \( \% \). (Nearest integer)
(Given molar mass in \( \text{g mol}^{-1} \) \( \mathrm{H}: 1, \, \mathrm{C}: 12, \, \mathrm{N}: 14, \, \mathrm{O}: 16 \))

Match the LIST-I with LIST-II.

List-I	List-II
Reaction	Mechanism
A. Williamson Synthesis	I. Electrophilic addition
B. Friedel Craft Reaction	II. Free radical substitution
C. Bromination of vinyl benzene	III. Nucleophilic substitution
D. Chlorination of toluene in light	IV. Electrophilic substitution

Choose the correct answer from the options given below:

The cycloalkene \( (\mathrm{X}) \) on bromination consumes one mole of bromine per mole of \( (\mathrm{X}) \) and gives the product \( (\mathrm{Y}) \) in which \( \mathrm{C} : \mathrm{Br} \) ratio is \( 3 : 1 \). The percentage of bromine in the product \( (\mathrm{Y}) \) is _______ \( \% \). (Nearest integer)
(Given: molar mass in \( \mathrm{g\,mol^{-1}} \) \( \mathrm{H} : 1 \), \( \mathrm{C} : 12 \), \( \mathrm{O} : 16 \), \( \mathrm{Br} : 80 \) )

10.

For the given molecule, “x”, the preferred site for the attack of the electrophile is:

11.

Consider the following sequence of reactions

The major product \( P \) is:

12.

Method used for separation of mixture of products \( (\mathrm{B} \text{ and } \mathrm{C}) \) obtained in the following reaction is:

13.

Identify \( A \) in the following reaction.

14.

Compound \( (X) \) is subjected to the sequence of reactions as shown above. Molar mass of the major product \( (Y) \) formed is ______ \( \mathrm{g}\,\mathrm{mol}^{-1} \).
(Given molar mass in \( \mathrm{g}\,\mathrm{mol}^{-1} \) C: \( 12 \); H: \( 1 \); O: \( 16 \))

15.

An optically active alkyl bromide \( \mathrm{C_{4}H_{9}Br} \), reacts with ethanolic \( \mathrm{KOH} \) to form major compound [A] which reacts with bromine to give compound [B]. Compound [B] reacts with ethanolic \( \mathrm{KOH} \) and sodamide to give compound [C]. One molecule of water adds to compound [C] on warming with mercuric sulphate and dilute sulphuric acid at \( 333 \, \text{K} \) to form compound [D]. The functional group in compound D will be confirmed by:

16.

An alkane \( (Y) \) requires \( 8 \) moles of oxygen for complete combustion and on chlorination with \( \mathrm{Cl_2}/h\nu \), \( (Y) \) gives only one monochlorinated product \( (Z) \). The total number of primary carbon atoms in \( (Y) \) is _______.

17.

\( R_f \) value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is \( 0.42 \). 2-methylpropene is treated with dilute \( \text{H}_2\text{SO}_4 \) to give major organic product (X). \( R_f \) value of (X) in the same solvent system under identical condition will be:

18.

The compound \( (\mathrm{X}) \) on

\((i)\) on heating in the presence of anhydrous \( \mathrm{AlCl}_3 \) and \( \mathrm{HCl} \) gas gives \( 2, 4 \)-dimethyl pentane

\((ii)\) aromatization gives toluene and

\((iii)\) cyclisation gives methyl cyclohexane

The correct name of compound \( (\mathrm{X}) \) is:

19.

Given below are two statements:
Statement I: Methane can be prepared by decarboxylation of sodium ethanoate, Kolbe’s electrolysis of sodium acetate and reaction \(\mathrm{CH_3MgBr}\) of with water.
Statement II: Methane cannot be prepared from unsaturated hydrocarbons and by Wurtz reaction.
In the light of the above statements, choose the correct answer from the options given below:

20.

Given below are two statements for the following reaction sequence.

Statement I: Compound ‘\( Z \)’ will give yellow precipitate with \( \mathrm{NaOI} \).
Statement II: Compound ‘\( Q \)’ has two different types of ‘H’ atoms (aromatic : aliphatic) in the ratio \( 1:3 \).
In the light of the above statements, choose the correct answer from the options given below:

21.

Given below are two statements:

Statement I: Phenol on treatment with \( \mathrm{CHCl_3} \) / aq. KOH under refluxing condition, followed by acidification produces p-hydroxy benzaldehyde as the major product and o-hydroxy benzaldehyde as the minor product.

Statement II: The mixture of p-hydroxybenzaldehyde and o-hydroxybenzaldehyde can be easily separated through steam distillation.

In the light of the above statements, choose the correct answer from the options given below:

22.

The major product of which of the following reaction is not obtained by rearrangement reaction?

23.

One mole of an alkane (x) requires \( 8 \) mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the alkane (x) is _______.

24.

For the following Friedel Craft's alkylation reaction, which of the statements are correct?

A. Major product is n-propyl benzene.
B. Iso-propyl carbocation intermediate is also generated.
C. Multiple substitution is inevitable.
D. Introducing electron-donating substituent on benzene will not produce any alkyl benzene.
Choose the correct answer from the options given below:

25.

An alkene \( (X) \) on ozonolysis followed by reduction gives following products.

The alkene \( (X) \) is:

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JEE MAIN 2026 28TH Jan Morning Shift

Method used for separation of mixture of products \( (\mathrm{B} \text{ and } \mathrm{C}) \) obtained in the following reaction is:

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