1
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The stereoisomers that are formed by electrophilic addition of bromine to trans-but-2-ene is/are :
A
2 enantiomers and 2 mesomers
B
2 identical mesomers
C
2 enantiomers
D
1 racemic and 2 enantiomers
2
JEE Main 2021 (Online) 31st August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
For the following sequence of reactions, the correct products are :

JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Hydrocarbons Question 55 English
A
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Hydrocarbons Question 55 English Option 1
B
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Hydrocarbons Question 55 English Option 2
C
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Hydrocarbons Question 55 English Option 3
D
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Hydrocarbons Question 55 English Option 4
3
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct sequence of correct reagents for the following transformation is :

JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Hydrocarbons Question 56 English
A
(i) Fe, HCl

(ii) Cl2, HCl

(iii) NaNO2, HCl, 0$$^\circ$$C

(iv) H2O/H+
B
(i) Fe, HCl

(ii) NaNO2, HCl, 0$$^\circ$$C

(iii) H2O/H+

(iv) Cl2, FeCl3
C
(i) Cl2, FeCl3

(ii) Fe, HCl

(iii) NaNO2, HCl, 0$$^\circ$$C

(iv) H2O/H+
D
(i) Cl2, FeCl3

(ii) NaNO2, HCl, 0$$^\circ$$C

(iii) Fe, HCl

(iv) H2O/H+
4
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Presence of which reagent will affect the reversibility of the following reaction, and change it to a irreversible reaction :

CH4 + I2 $$\mathrel{\mathop{\kern0pt\rightleftharpoons} \limits_{{\mathop{\rm Re}\nolimits} versible}^{hv}} $$ CH3 $$-$$ I + HI
A
HOCl
B
dilute HNO2
C
Liquid NH3
D
Concentrated HIO3
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