1
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following chemical agent is not being used for dry-cleaning of clothes?
A
H2O2
B
CCl4
C
Liquid CO2
D
Cl2C = CCl2
2
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following compounds will liberate CO2, when treated with NaHCO3 ?
A
$${(C{H_3})_3}\mathop {NH}\limits^ \oplus \mathop {Cl}\limits^\Theta $$
B
$${(C{H_3})_4}\mathop N\limits^ \oplus \mathop O\limits^\Theta H$$
C
JEE Main 2021 (Online) 25th July Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 91 English Option 3
D
$$C{H_3}N{H_2}$$
3
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :
A
TiO2
B
Fe2O3
C
ZnO
D
SiO2
4
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
An organic compound 'A' C4H8 on treatment with KMnO4/H+ yields compound 'B' C3H6O.

Compound 'A' also yields compound 'B' an ozonolysis. Compound 'A' is :
A
2-Methylpropene
B
1-Methylcyclopropane
C
But-2-ene
D
Cyclobutane
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