1
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The intermolecular potential energy for the molecules A, B, C and D given below suggests that : JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Chemical Bonding & Molecular Structure Question 189 English
A
A-B has the stiffest bond
B
A-D has the shortest bond length
C
A-A has the largest bond enthalpy
D
D is more electronegative than other atoms
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair in which both the species have the same magnetic moment (spin only) is :
A
[Cr(H2O)6]2+ and [CoCl4]2–
B
[Co(OH)4]2– and [Fe(NH3)6]2+
C
[Mn(H2O)6]2+ and [Cr(H2O)]2+
D
[Cr(H2O)6]2+ and [Fe(H2O)6]2+
3
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 130 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 130 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 130 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Alcohols, Phenols and Ethers Question 130 English Option 4
4
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

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