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)

The C – H bond and C – C bond in ethane are formed by overlapping of -

1. ${\mathrm{sp}}^3-\mathrm{s} \mathrm{and} {\mathrm{sp}}^3-{\mathrm{sp}}^3$

2. ${\mathrm{sp}}^2-\mathrm{s} \mathrm{and} {\mathrm{sp}}^2-{\mathrm{sp}}^2$

3. sp – sp and sp – sp 

4. p–s and p – p

An organic molecule necessarily shows optical activity if it -

1. Contains asymmetric carbon atoms

2. Is non-planar

3. Is non-superimposable on its mirror image

4. Is superimposable on its mirror image

The compound that has least hindered rotation around carbon-carbon bond is-

A compound having the highest boiling point among the following is - 

 [A] and [B]  in the  mentioned reaction are respectively -

1. Alc. KOH and ${\mathrm{NaNH}}_2$

2. ${\mathrm{NaNH}}_2$ and Lindlar catalyst

3. ${\mathrm{NaNH}}_2$ and alcoholic KOH

4. Lindlar catalyst and ${\mathrm{NaNH}}_2$

Acidic hydrogen present among the following compound is -

1. Ethyne

2. Ethene

3. Benzene

4. Ethane

Which of the following compounds is insoluble even in hot concentrated H₂​SO₄​?

1. Aniline 

2. Benzene

3. Ethylene

4. Hexane

Anti-Markovnikov’s addition of HBr is not observed in-

Baeyer's reagent is: 

1. Acidified permanganate solution

2. Alkaline permanganate solution

3. Neutral permanganate solution

4. Aqueous bromine solution