$\mathrm{Ph}-{\mathrm{CO}}_2\mathrm{H}\stackrel{{\mathrm{SOCl}}_2}{\to }\mathrm{A}\stackrel{{\mathrm{Me}}_2\mathrm{NH}}{\to }\mathrm{B}\stackrel{\left(\mathrm{c}\right)}{\to }\mathrm{Ph}-\mathrm{CHO}$, unknown reagent (c) is:

$\underset{{\mathrm{AlCl}}_3}{\overset{{\mathrm{CH}}_3-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-\mathrm{Cl}}{\to }}\underset{80\%}{\left(\mathrm{A}\right)}\underset{\mathrm{triethylene} \mathrm{glycol}, \mathrm{heat}}{\overset{{\mathrm{NH}}_2-{\mathrm{NH}}_2, \mathrm{NaOH}}{\to }}\underset{73\%}{\left(\mathrm{B}\right)}$

The product (B) in the above mentioned reaction is -

$\stackrel{{\mathrm{Cl}}_2}{\to }$ (A), Product (A) of this reaction is:

; Product (B) of this reaction is :

Cyclopentadiene is much more acidic than cyclopentane, beacuse -

 The compounds among the following that can be generated by Friedel craft acylation is/are -

I.

II.
III.

IV.

     
The product B in the above mentioned reaction is -

The major product obtained in the given reaction is-

The deactivating but ortho-para directing benzene ring substituent among the following is-

Which of the following organic chlorides will not give a Friedel-Craft alkylation product when heated with benzene and AlCl₃/FeCl₃ ?

Which of the following is aromatic?

Which of the following substance will increase the acidity of phenol?

The compound X in the above reaction is-

Give a simple test to differentiate cyclohexane and cyclohexene :

Partial oxidation of methane with Ni/Al₂O₃ catalyst gives:

Predict the correct intermediate and product in the following reaction.

H₃C-C$\equiv$CH $\underset{{\mathrm{HgSO}}_4}{\overset{{\mathrm{H}}_2\mathrm{O}, {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$ Intermediate $\to$Product

                                                    (A)                   (B)

An alkene reacts in accordance with the Markownikoff's rule,

to give a product 1-chloro-l-methylcyclohexane with HCl. The possible alkene is -

2, 3-dimethyl-2-butene can be prepared by heating which of the following compounds

with a strong acid?

The oxidation of benzene by V₂O₅ in the presence of air produces-

What products are formed when the following compound is treated with Br₂ in the

presence of FeBr₃?

Identity Z in the sequence of reactions,
                          HBr/H₂O₂ 
CH₃CH₂CH=CH₂    →        Y    +   C₂H₅O^-Na⁺→   Z
 

Which of the following organic compounds has same hybridisation as its combustion product -(CO₂)?

A compound among the following that does not undergo Friedel-Craft's reaction easily is-

In the following reaction, What will be the major product?

In the following reactions:-

the major products (A) and (C) are respectively

Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by:-

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO₃ and conc.

H₂SO₄. In the mixture, nitric acid acts as a/an-

Benzene reacts with CH₃Cl in the presence of anhydrous AlCl₃ to form-

$$\begin{gathered} {\mathrm{H}}_3\mathrm{C}-\underset{|}{\mathrm{C}}\mathrm{H}-\mathrm{CH}={\mathrm{CH}}_2 + \mathrm{HBr} \to \mathrm{A} \\ {\mathrm{CH}}_3 \end{gathered}$$

A (Predominantly) is