Question

Match the column I and II.

• A. $\text{a}-\text{q},\text{s};\text{b}-\text{p},\text{r};\text{c}-\text{p},\text{r};\text{d}-\text{q},\text{s}$
• B. $\text{a}-\text{q},\text{s};\text{b}-\text{p},\text{s};\text{c}-\text{p},\text{r};\text{d}-\text{q},\text{s}$
• C. $\text{a}-\text{q},\text{r};\text{b}-\text{p},\text{r};\text{c}-\text{p},\text{r};\text{d}-\text{p},\text{s}$
• D. $\text{a}-\text{q},\text{s};\text{b}-\text{p},\text{r};\text{c}-\text{p},\text{s};\text{d}-\text{q},\text{s}$

Answer 1

The correct option is A $\text{a}-\text{q},\text{s};\text{b}-\text{p},\text{r};\text{c}-\text{p},\text{r};\text{d}-\text{q},\text{s}$

(a)is a deactivating group due to $-M$effect and therefore is a meta directing.
(b)is an activating group due to $+M$ effect and hence is an ortho-para directing group.
(c)is an activating group due to $+M$ effect and hence is an ortho-para directing group.
(d)is a deactivating group due to $-M$ effect and hence is a meta directing group.