Assertion $(A)$: $-NH_2$ group of aniline is ortho,para directing in electrophilic substitutions.
Reason $(R)$: $-NH_2$ group stabilises the arenium ion formed by the ortho,para attack of the electrophile.
The correct answer is
Reason $(R)$: $-NH_2$ group stabilises the arenium ion formed by the ortho,para attack of the electrophile.
The correct answer is
- ABoth $(A)$ and $(R)$ are correct,$(R)$ is the correct explanation of $(A)$
- BBoth $(A)$ and $(R)$ are correct,$(R)$ is not the correct explanation of $(A)$
- C$(A)$ is correct,but $(R)$ is not correct
- D$(A)$ is not correct,but $(R)$ is correct
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Similar Questions
Find out the value of $K_C$ for the following reaction from the value of $K_P$
$2NOCl_{(g)} \rightleftharpoons 2NO_{(g)} + Cl_{2(g)}$
[Given : $K_P = 8 \times 10^{12} \ atm$ at $500 \ K$ use $R = 0.08 \ L \ atm \ mol^{-1} \ K^{-1}$ ]
$2NOCl_{(g)} \rightleftharpoons 2NO_{(g)} + Cl_{2(g)}$
[Given : $K_P = 8 \times 10^{12} \ atm$ at $500 \ K$ use $R = 0.08 \ L \ atm \ mol^{-1} \ K^{-1}$ ]
$A$ metal nitrate reacts with $KI$ to give a black precipitate which on addition of excess of $KI$ converts into an orange-colored solution. The cation of the metal nitrate is
Shown in the figure is a circular loop of radius $r$ and resistance $R$. $A$ variable magnetic field of induction $B = B_0e^{-t}$ is established inside the coil. If the key $(K)$ is closed,the electrical power developed right after closing the switch is equal to
Match the following genes of the $Lac$ operon with their respective products.
Select the correct option.
$(a)$ $i$ gene $(i)$ $\beta$-galactosidase $(b)$ $z$ gene $(ii)$ Permease $(c)$ $a$ gene $(iii)$ Repressor $(d)$ $y$ gene $(iv)$ Transacetylase
Select the correct option.
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Match the appropriate pairs from List-$I$ and List-$II$ :
List-$I$ List-$II$ $1$. Nitrogen molecules $(A)$ Continuous spectrum $2$. Incandescent solids $(B)$ Absorption spectrum $3$. Fraunhoffer lines $(C)$ Band spectrum $4$. Electric arc between iron rods $(D)$ Emission spectrum
| List-$I$ | List-$II$ |
|---|---|
| $1$. Nitrogen molecules | $(A)$ Continuous spectrum |
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