A liquid compound (x) can be purified by steam distillation only if it is:

1. Steam volatile, immiscible with water 

2. Not steam volatile, miscible with water

3. Steam volatile, miscible with water

4. Not steam volatile, immiscible with water

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

The IUPAC name of  CH₃CH=CHC≡CH is:

1. Pent - 3 - en - 1 - yne

2. Pent - 2 - en - 4 - yne

3. Pent - 1 - yn - 3 - ene

4. Pent - 4 - yn - 2 – ene

The species among the following that is not an electrophile is:

1. $B{H}_3$

2. $H_3\stackrel{\oplus }{O}$

3. $\stackrel{\oplus }{N}{O}_2$

4. $\stackrel{\oplus }{Cl}$

The IUPAC name of the above-mentioned compound is:

1. cis-2-Chloro-3-iodo-2-pentene
2. trans-2-Chloro-3-iodo-2-pentene
3. cis-3-Iodo-4-chloro-3-pentene
4. trans-3-Iodo-4-chloro-3-pentene

The correct order of –I effect is:

1. -NR₃⁺ > -OR  > -F

2. -F > -NR₃⁺ > -OR  

3.-NR₃⁺ > -F  > -OR  

4. -OR  > -NR₃⁺ > -F

The correct order of stability is:

IUPAC  name of  is: 

1. 2-Chloro-3-iodo-2-pentene

2. 2-Chloro-3-iodo-3-pentene

3.  2-Iodo-3-chloro-pentene

4.  None of the above

2-Butene shows geometrical isomerism due to:

1. Restricted rotation about double bond

2. Free rotation about double bond

3. Free rotation about single bond

4. Chiral carbon

Dihedral angle in staggered form of ethane is:

1. $0°$

2. $120°$

3. $60°$

4. $180°$