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

1.	Ethanal and Methanal	2.	Ethanal and Propanal
3.	Ethanal and Butanal	4.	Ethanal and  Ethanol

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, the incomplete combustion of methane is:

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.

Which of the following is/are aromatic structure(s)?

a.		b.
c.		d.

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

1.		2.
3.		4.