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In birch reduction, the benzene is converted into $1, 4 -$ cyclohexadiene.

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Important Questions on Hydrocarbons

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Ethyne on passing through red hot iron tube at

873 K

gives a cyclic compound

X

. In this reaction the number of

π

-bonds lost and number of

σ

-bonds formed are respectively

MEDIUM

Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

In the following sequence of reactions the maximum number of atoms present in molecule ‘

C

’ in one plane is_______

A \overset{R e d h o t}{\underset{C u t u b e}{\to}} B \overset{C H_{3} C l (1 . e q)}{\underset{A n h y d r o u s A l C l_{3}}{\to}} C

(A is a lowest molecular weight alkyne)

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Among the following, the most acidic compound is :

HARD

Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Which of the following reactions will give tert-butyl benzene as the major product?

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Cyclopentadienyl anion is

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The correct IUPAC name of the following compound is:

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The compounds $A$ and $B$ in the following reaction are, respectively:

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The oxidation of benzene by

V_{2} O_{5}

in the presence of air produces:

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Aromatic electrophilic substitution reaction that is reversible is

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The major product of the following reaction is :

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HARD

Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The major product formed in the given reaction is:

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HARD

Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Consider the following chemical reaction.

CH \equiv CH \frac{1) Red hot Fe tube, 873 K}{2) CO, HCl, {AlCl}_{3}} > Product

The number of

{sp}^{2}

hybridized carbon atom(s) present in the product is

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The $IUPAC$ name of the following compound is

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HARD

Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Among P, Q, R and S, the aromatic compound(s) is/are

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MEDIUM

Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

In the presence of sunlight, benzene reacts with

{Cl}_{2}

to give product,

X

. The number of hydrogens in

X

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

The Birch reduction of benzoic acid gives

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Benzene reacts with chlorine to form benzene hexachloride in presence of

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

Benzene reacts with chlorine to form benzene hexachloride in presence of

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Chemistry>Organic Chemistry>Hydrocarbons>Aromatic Hydrocarbons

the product can be:

In birch reduction, the benzene is converted into 1,4-cyclohexadiene.

Important Questions on Hydrocarbons

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In birch reduction, the benzene is converted into $1, 4 -$ cyclohexadiene.