318325 Assertion :
$-{\mathrm{C}}_2{\mathrm{H}}_5$ is an $\text{o / p}$-directing group.
Reason :
The groups which direct the incoming group to ortho and para positions are called $\text{o / p}$ -directing groups.

318326 Assertion :
Nitrobenzene does not undergo
Friedel Crafts reaction.
Reason :
Nitrobenzene is a $\text{m}$ -director.

318327 Which order is correct for the decreasing reactivity for ring monobromination of the following compounds?
$$\begin{array}{c}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{C}{\text{H}}_{\text{3}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{COOH,}{\text{C}}_{\text{6}}{\text{H}}_{\text{6}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{N}{\text{O}}_{\text{2}}\text{?}\\ \text{I}\text{II}\text{III}\text{IV}\end{array}$$

318325 Assertion :
$-{\mathrm{C}}_2{\mathrm{H}}_5$ is an $\text{o / p}$-directing group.
Reason :
The groups which direct the incoming group to ortho and para positions are called $\text{o / p}$ -directing groups.

318326 Assertion :
Nitrobenzene does not undergo
Friedel Crafts reaction.
Reason :
Nitrobenzene is a $\text{m}$ -director.

318327 Which order is correct for the decreasing reactivity for ring monobromination of the following compounds?
$$\begin{array}{c}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{C}{\text{H}}_{\text{3}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{COOH,}{\text{C}}_{\text{6}}{\text{H}}_{\text{6}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{N}{\text{O}}_{\text{2}}\text{?}\\ \text{I}\text{II}\text{III}\text{IV}\end{array}$$

318328 The compound ${\text{C}}_{\text{7}}{\text{H}}_{\text{8}}$ undergoes the following reactions :
${\text{C}}_{\text{7}}{\text{H}}_{\text{8}}\stackrel{\text{3C}{\text{l}}_{\text{2}}\text{/}\mathrm{\Delta }}{\to }\text{A}\stackrel{\text{B}{\text{r}}_{\text{2}}\text{/Fe}}{\to }\text{B}\stackrel{\text{Zn/HCl}}{\to }\text{C}$

318325 Assertion :
$-{\mathrm{C}}_2{\mathrm{H}}_5$ is an $\text{o / p}$-directing group.
Reason :
The groups which direct the incoming group to ortho and para positions are called $\text{o / p}$ -directing groups.

318326 Assertion :
Nitrobenzene does not undergo
Friedel Crafts reaction.
Reason :
Nitrobenzene is a $\text{m}$ -director.

318327 Which order is correct for the decreasing reactivity for ring monobromination of the following compounds?
$$\begin{array}{c}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{C}{\text{H}}_{\text{3}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{COOH,}{\text{C}}_{\text{6}}{\text{H}}_{\text{6}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{N}{\text{O}}_{\text{2}}\text{?}\\ \text{I}\text{II}\text{III}\text{IV}\end{array}$$

318328 The compound ${\text{C}}_{\text{7}}{\text{H}}_{\text{8}}$ undergoes the following reactions :
${\text{C}}_{\text{7}}{\text{H}}_{\text{8}}\stackrel{\text{3C}{\text{l}}_{\text{2}}\text{/}\mathrm{\Delta }}{\to }\text{A}\stackrel{\text{B}{\text{r}}_{\text{2}}\text{/Fe}}{\to }\text{B}\stackrel{\text{Zn/HCl}}{\to }\text{C}$

318325 Assertion :
$-{\mathrm{C}}_2{\mathrm{H}}_5$ is an $\text{o / p}$-directing group.
Reason :
The groups which direct the incoming group to ortho and para positions are called $\text{o / p}$ -directing groups.

318326 Assertion :
Nitrobenzene does not undergo
Friedel Crafts reaction.
Reason :
Nitrobenzene is a $\text{m}$ -director.

318327 Which order is correct for the decreasing reactivity for ring monobromination of the following compounds?
$$\begin{array}{c}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{C}{\text{H}}_{\text{3}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{COOH,}{\text{C}}_{\text{6}}{\text{H}}_{\text{6}}\text{,}{\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{N}{\text{O}}_{\text{2}}\text{?}\\ \text{I}\text{II}\text{III}\text{IV}\end{array}$$

318328 The compound ${\text{C}}_{\text{7}}{\text{H}}_{\text{8}}$ undergoes the following reactions :
${\text{C}}_{\text{7}}{\text{H}}_{\text{8}}\stackrel{\text{3C}{\text{l}}_{\text{2}}\text{/}\mathrm{\Delta }}{\to }\text{A}\stackrel{\text{B}{\text{r}}_{\text{2}}\text{/Fe}}{\to }\text{B}\stackrel{\text{Zn/HCl}}{\to }\text{C}$