The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is (NEET)______________

(a)

the eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain

(b)

the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain

(c)

the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain

(d)

the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has no torsional strain

An alkyl bromide (A) reacts with sodium in ether to form 4, 5– diethyloctane, the compound (A) is _________

(a)

CH₃ (CH₂)₃ Br

(b)

CH₃(CH₂)₅ Br

(c)

CH₃(CH₂)₃ CH(Br)CH₃

(d)

\({ CH }_{ 3 }-{ \left( { CH }_{ 2 } \right) }_{ 2 }-CH\left( Br \right) -\underset { \overset { { | } }{ { CH }_{ 3 } } }{ { CH }_{ 2 } } \)

The C – H bond and C – C bond in ethane are formed by which of the following types of overlap _________

(a)

sp³ – s and sp³ – sp³

(b)

sp² – s and sp² – Sp²

(c)

sp – sp and sp – sp

(d)

p – s and p – p

The general formula for cyclo alkanes _________

(a)

C_nH_n

(b)

C_nH_2n

(c)

C_n H_2n–2

(d)

C_n H_2n+2

The compound that will react most readily with gaseous bromine has the formula (NEET)_____________

(a)

C₃H₆

(b)

C₂H₂

(c)

C₄H₁₀

(d)

C₂H₄

Which among the following alkenes on reductive ozonolysis produces only propanone?

(a)

2 – Methyl propene

(b)

2 – Methyl but – 2 - ene

(c)

2, 3 – Dimethyl but – 1 – ene

(d)

2, 3 – Dimethyl but – 2 – ene

How is propyne prepared from an alkyene dihalide?

An alkylhalide with molecular formula C₆H₁₃Br on dehydro halogenation gave two isomeric alkenes X and Y with molecular formula C₆H₁₂. On reductive ozonolysis, X and Y gave four compounds CH₃COCH₃, CH₃CHO, CH₃CH₂CHO and (CH₃)₂ CHCHO. Find the alkylhalide.

How does Huckel rule help to decide the aromatic character of a compound.

Suggest a simple chemical test to distinguish propane and propene.

What happens when isobutylene is treated with acidified potassium permanganate?

Identify A and B.

How will you distinguish 1 – butyne and 2 – butyne?

Give IUPAC names for the following compounds
CH₃ – CH = CH – CH = CH – C ≡ C – CH₃

Identify the compound A, B, C and D in the following series of reactions