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

Find the dihedral angle in the staggered form of ethane.

1. $0°$

2. $120°$

3. $60°$

4. $180°$

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

1.		2.
3.		4.

The best method for the separation of naphthalene and benzoic acid from their mixture is:
1. Sublimation
2. Chromatography
3. Crystallisation
4. Distillation

Which amongst the following is the most stable carbocation:
 

1.		2.
3.		4.

The chiral centre is absent in:

1. DCH₂-CH₂-CH₂-Cl

2. CH₃-CHD-CH₂-Cl

3. CH₃-CHCl-CH₂D$\mathrm{<mspace\; width="1em"></mspace>\; <mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>}$

4. CH₃-CHOH-CH₂-CH₃

Which one of the following compounds is most acidic:
 

1.		2.
3.		4.	\(\mathrm{Cl}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{OH} \)