Which of the following statement(s) is/are correct about the elimination reaction of 2-Bromopentane to form pent-2-ene:
(a) $\mathrm{\beta }$-Elimination reaction
(b) Follows Zaitsev rule
(c) Dehydrohalogenation reaction
(d) Dehydration reaction

1.	(a), (c), (d)	2.	(b), (c), (d)
3.	(a), (b), (d)	4.	(a), (b), (c)

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

1.		2.
3.		4.

The major product (P) in the following reaction is:

1.		2.
3.		4.

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

The major product (P), in the reaction given below, is:

1.		2.
3.		4.

Compound x and y respectively in the above reaction is: 

1.
2.
3.
4.

A compound of the formula ${\mathrm{C}}_4{\mathrm{H}}_8$ does not decolorize bromine water.  The compound can be:

1.  But-1-ene

2.  But-2-ene

3.  Cyclobutane

4.  2-methyl propene

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

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 :