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

In the following reaction,

The major product obtained is ________

(a)

(b)

(c)

(d)

The compounds formed at anode in the electrolysis of an aquous solution of potassium acetate are __________

(a)

CH₄ and H₂

(b)

CH₄ and CO₂

(c)

C₂H₆ and CO₂

(d)

C₂H₄ and Cl₂

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

Major product of the below mentioned reaction is _____________
\({ \left( { CH }_{ 3 } \right) }_{ 2 }C={ CH }_{ 2 }\overset { ICl }{ \longrightarrow } \)

(a)

2–chloro –1– iodo – 2 – methyl propane

(b)

1–chloro–2–iodo–2–methylpropane

(c)

1,2 – dichloro – 2 – methyl propane

(d)

1, 2 – diiodo – 2 – methyl propane

Cis – 2 – butene and trans – 2 – butene are __________

(a)

conformational isomers

(b)

structural isomers

(c)

configurational isomers

(d)

optical isomers

\(\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } -\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } \overset { \left( A \right) }{ \longrightarrow } CH\equiv CH,\) where A is ___________

(a)

Zn

(b)

Conc H₂SO₄

(c)

alc. KOH

(d)

dil H₂SO₄

The difference in potential energy between eclipsed and staggered form of ethane is ____________

(a)

4 kJ/mol

(b)

12.55 kJ/mol

(c)

2 kJ/mol

(d)

44 kJ/mol

The angle strain in cyclopentane is ______________

(a)

72°

(b)

128^o

(c)

44^o

(d)

108°

In which alkane isomerization will not occur?

(a)

C₂H₆

(b)

C₄H₁₀

(c)

C₅H₁₀

(d)

C₆H1₄

In an attempt to prepare propane by Wurtz reaction 1 mole of methyl bromide and 1mole of ethyl bromide are treated with sodium. Assuming equal probability for all possible reaction. How many 'g' of propane will be obtained?

(a)

44 g

(b)

22 g

(c)

33 g

(d)

14.67 g

Which of the following conformers for ethylene glycol is most stable?

(a)

  

(b)

  

(c)

  

(d)

  

Total number of conformations possible in cyclohexane is __________

(a)

Zero

(b)

Infinite

(c)

Four

(d)

Two

Which of the following is the most stable cycloalkane?

(a)

(b)

(c)

(d)

Torsion strain is the repulsive interaction between ___________

(a)

Electron cloud of two bonds

(b)

Electron cloud of two \(\sigma \)-bonds

(c)

Electron cloud of two \(\pi\)-bonds

(d)

Electron cloud of two \(\sigma \)-bonds on adjacent atoms

CH₃ - CH = CH₂ + HBr \(\overset { Benzoyl\ peroxide }{ \underset { hv }{ \longrightarrow } } \)Products which of the following is a possible product in the above reaction?

(a)

CH₃ - CH₂ - CH₂ - Br

(b)

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

(c)

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

(d)

All of these

How many structural isomers are possible for the molecular formula C₄H₈ which can undergo ozonolysis?

(a)

2

(b)

4

(c)

3

(d)

1

Carbon-carbon bond length in benzene is ____________

(a)

1.39 A

(b)

1.09 A

(c)

1.54 A

(d)

1.34 A

Which of the following is the most reactive towards electrophilic substitution reaction?

(a)

(b)

 

(c)

(d)