Decreasing order of acidic behavior of benzene, n-hexane, and ethyne is:

1. Hexane > Ethyne > Benzene

2. Benzene > Hexane > Ethyne

3. Ethyne > Benzene > Hexane

4. Benzene > Ethyne > Hexene

The correct order of decreasing reactivity of the following compounds:

Chlorobenzene, 2,4-Dinitrochlorobenzene, and p-Nitrochlorobenzene

with an electrophile (E⁺)  is :

Match the reagent from Column I which on reaction with CH₃-CH=CH₂ gives the same product given in Column II as per the codes given below

Codes:

Arrange the following alkyl halides in decreasing order of the rate of $\mathrm{\beta }$-elimination reaction with alcoholic KOH.

A.
B.	CH3-CH2-Br
C.	CH3-CH2-CH2-Br

1. A > B > C

2. C > B > A

3. B > C > A

4. A > C > B

Among the following reactions, incomplete combustion of methane is:

The products formed after ozonolysis of Pent-2-ene are:

Which of the following is a free radical substitution reaction?

1. Benzene with Br₂/AlCl₃

2. Acetylene with HBr

3. Methane with Br₂/hv

4. Propene with HBr/(C₆H₅COO)₂

Mark the correct order of reactivity towards the electrophilic aromatic substitution reaction.

Four structures are given in options (a) to (d). Examine them and select the aromatic structures.

a.		b.
c.		d.

Choose the correct option

An alkene on ozonolysis gives methanal as one of the products. Its structure is:

1.		2.
3.		4.