Arrange the following in the order of C-Br bond strength in a polar solvent

1. I<II<III<IV

2. III<IV<I<II

3. IV<III<II<I

4. II<I<III<IV

What is the correct order of reactivity for the following compounds in an \(S_N 1\) reaction?

Which of the following compounds will give racemic mixture on nucleophilic substitution by OH${}^{-}$ ion?

(i)
(ii)
(iii)

  
1.  (iii) 
2.  (i), (ii) and (iii)     
3.  (ii) and (iii)     
4.  (i) and (iii) 

How many unique substitution products can be formed when ethane reacts with bromine under sunlight?

A in the reaction below is:

1.		2.
3.		4.