1
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Match the following :

(i) Foam (a) smoke
(ii) Gel (b) cell fluid
(iii) Aerosol (c) jellies
(iv) Emulsion (d) rubber
(e) froth
(f) Milk
A
(i)-(e), (ii)-(c), (iii)-(a), (iv)-(f)
B
(i)-(d), (ii)-(b), (iii)-(a), (iv)-(e)
C
(i)-(d), (ii)-(b), (iii)-(e), (iv)-(f)
D
(i)-(b), (ii)-(c), (iii)-(e), (iv)-(d)
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The region in the electromagnetic spectrum where the Balmar series lines appear is :
A
Microwave
B
Ultraviolet
C
Visible
D
Infrared
3
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The ionic radii of O2–, F, Na+ and Mg2+ are in the order :
A
F > O2– > Na+ > Mg2+
B
Mg2+ > Na+ > F > O2–
C
O2– > F > Mg2+ > Na+
D
O2– > F > Na+ > Mg2+
4
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are these alkenes?
A
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 98 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 98 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 98 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 98 English Option 4
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