1
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 20th July Morning Shift Chemistry - Basics of Organic Chemistry Question 166 English
Among the given species the Resonance stabilised carbocations are :
A
(C) and (D) only
B
(A), (B) and (D) only
C
(A) and (B) only
D
(A), (B) and (C) only
2
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In the given reaction

3-Bromo-2, 2-dimethyl butane $$\buildrel {{C_2}{H_5}OH} \over \longrightarrow \mathop {'A'}\limits_{(Major\,\Pr oduct)} $$

Product A is :
A
2-Ethoxy-3, 3-dimethyl butane
B
1-Ethoxy-3, 3-dimethyl butane
C
2-Ethoxy-2, 3-dimethyl butane
D
2-Hydroxy-3, 3-dimethyl butane
3
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Compound A is converted to B on reaction with CHCl3 and KOH. The compound B is toxic and can be decomposed by C. A, B and C respectively are :
A
primary amine, nitrile compound, conc. HCl
B
secondary amine, isonitrile compound, conc. NaOH
C
primary amine, isonitrile compound, conc. HCl
D
secondary amine, nitrile compound, conc. NaOH
4
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify the incorrect statement from the following
A
Amylose is a branched chain polymer of glucose
B
Starch is a polymer of $$\alpha$$-D glucose
C
$$\beta$$-Glycosidic linkage makes cellulose polymer
D
Glycogen is called as animal starch
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