JEE Main PYQs — Hydrocarbons

Given below are two statements: Statement (I): On nitration of m-xylene with HNO3, H2SO4 followed by oxidation, 4-nitrobenzene-1,3-dicarboxylic acid is obtained as the major product. Statement (II):…

The number of optically active products obtained from the complete ozonolysis of the given compound is:

Consider the following molecule (X): The major product formed when the given molecule (X) is treated with HBr (1 eq) is:

The alkane from below having two secondary hydrogens is:

Following are the four molecules "P", "Q", "R" and "S": Which one among the four molecules will react with H-Br(aq) at the fastest rate?

Identify product [A], [B] and [C] in the following reaction sequence:

Identify correct statement/s: (A) -OCH3 and -NHCOCH3 are activating groups. (B) -CN and -OH are meta directing groups. (C) -CN and -SO3H are meta directing groups. (D) Activating groups act as ortho-…

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

Which compound will most easily be attacked by an electrophile?

Major product of the following reaction is:

Number of and bonds present in ethylene molecule is respectively:

Consider the given chemical reaction: Product "A" is:

The incorrect statement regarding the geometrical isomers of 2-butene is:

Compound A formed in the following reaction reacts with B gives the product C. Find out A and B.

In the given reactions identify A and B.

The incorrect statement regarding ethyne is:

Given below are two statements: Statement-I: Nitration of benzene involves the following step: Statement-II: Use of Lewis base promotes the electrophilic substitution of benzene. In the light of the…

The correct arrangement for decreasing order of electrophilic substitution for the following compounds:

In the following reaction, 'X' is:

The major product 'P' formed in the given reaction is:

A hydrocarbon 'X' with formula C6H8 uses two moles of H2 on catalytic hydrogenation of its one mole. On ozonolysis, 'X' yields two moles of methane dicarbaldehyde (malonaldehyde). The hydrocarbon 'X'…

The major products 'A' and 'B', respectively, are:

The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement):

The major product for the following reaction is:

Major product 'P' formed in the following reaction is:

The two products formed in above reaction are:

Choose the correct set of reagents for the following conversion: {trans}({Ph-CH=CH-CH3}) {cis}({Ph-CH=CH-CH3})

But-2-yne is reacted separately with one mole of Hydrogen as shown below: Identify the incorrect statements from the options given below: (A) A is more soluble than B. (B) The boiling point and…

In the following reaction, X is:

Decreasing order of reactivity towards electrophilic substitution for the following compounds is:

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Benzene is more stable than hypothetical cyclohexatriene. Reason (R): The…

The major product P formed in the given reaction is:

Arrange the following conformational isomers of n-butane in order of their increasing potential energy:

Identify A in the given chemical reaction.

For the given reaction: What is A (major product)?

Which of the following is Lindlar catalyst?

Which one of the following carbonyl compound cannot be prepared by addition of water on an alkyne in the presence of HgSO4 and H2SO4?

Metallic sodium does not react normally with:

Identify correct A, B and C in the reaction sequence given below:

For the following sequence of reactions, the correct products are:

The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is:

Consider the given reaction. The Product A is:

The structures of A and B formed in the following reaction are: [Ph = -C6H5]

Considering the above chemical reaction, identify the product X:

Benzene on nitration gives nitrobenzene in presence of HNO3 and H2SO4 mixture, where:

For the given reaction: What is A?

The major product of the following reaction is:

In the above reaction, the reagent A is:

Which will produce highest yield in Friedel-Crafts reaction?

Consider the following reactions: {({C7H14})}{{'A'}} {{ozonolysis}} {'B'} + {'C'}

The major products A and B in the following reactions are:

The major product of the following reaction is:

An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation, and also gives the following reaction:

Which of the following reactions will not produce a racemic product?

The major product in the following reaction is:

The correct order of heat of combustion for following alkadienes is:

The increasing order of the boiling points of the major products A, B and C of the following reactions will be:

Which of the following compounds produces an optically inactive compound on hydrogenation?

The major product obtained from the following reaction is:

Consider the following reactions: A is:

Consider the following reactions. Which of these reactions are possible?

The number of sp2 hybrid orbitals in a molecule of benzene is:

Which of these factors does not govern the stability of a conformation in acyclic compounds?

The major product of the following reaction is:

The major product(s) obtained in the following reaction is/are:

The major product of the following addition reaction is:

The major product of the following reaction is:

Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light?

Which one of the following alkenes when treated with HCl yields majorly an anti-Markovnikov product?

The major product of the following reaction is:

The major product of the following reaction is:

The major product of the following reaction is:

But-2-ene on reaction with alkaline KMnO4 at elevated temperature followed by acidification will give:

The major product of the following reaction is:

Polysubstitution is a major drawback in:

What will be the major product in the following mononitration reaction?