1
JEE Main 2024 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The set of meta directing functional groups from the following sets is :
A
$-\mathrm{CN},-\mathrm{NH}_2,-\mathrm{NHR},-\mathrm{OCH}_3$
B
$-\mathrm{CN},-\mathrm{CHO},-\mathrm{NHCOCH}_3,-\mathrm{COOR}$
C
$-\mathrm{NO}_2,-\mathrm{NH}_2,-\mathrm{COOH},-\mathrm{COOR} $
D
$-\mathrm{NO}_2,-\mathrm{CHO},-\mathrm{SO}_3 \mathrm{H},-\mathrm{COR}$
2
JEE Main 2024 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Lassaigne's test is used for detection of :
A
Phosphorous and halogens only
B
Nitrogen, Sulphur and Phosphorous only
C
Nitrogen, Sulphur, phosphorous and halogens
D
Nitrogen and Sulphur only
3
JEE Main 2024 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The functional group that shows negative resonance effect is :
A
$-\mathrm{OH}$
B
$-\mathrm{OR}$
C
$-\mathrm{COOH}$
D
$-\mathrm{NH}_2$
4
JEE Main 2024 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Ionic reactions with organic compounds proceed through :

(A) homolytic bond cleavage

(B) heterolytic bond cleavage

(C) free radical formation

(D) primary free radical

(E) secondary free radical

Choose the correct answer from the options given below :
A
(A) only
B
(B) only
C
(C) only
D
(D) and (E) only
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