NEET 2020 Phase 1 | Chemical Bonding and Molecular Structure Question 27 | Chemistry

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

Which of the following set of molecules will have zero dipole moment?

Boron trifluoride, hydrogen, fluoride, carbon dioxide, 1, 3-dichlorobenzene

Nitrogen trifluoride, beryllium difluoride, water, 1, 3-dichlorobenzene

Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4-dichlorobenzene

Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

Identify a molecule which does not exist.

Li₂

C₂

O₂

He₂

NEET 2019

MCQ (Single Correct Answer)

-1

The number of sigma ($$\sigma $$) and pi ($$\pi $$) bonds in pent-2-en-4-yne is -

11 $$\sigma $$ bonds and 2 $$\pi $$ bonds

13 $$\sigma $$ bonds and no $$\pi $$ bonds

10 $$\sigma $$ bonds and 3 $$\pi $$ bonds

8 $$\sigma $$ bonds and 5 $$\pi $$ bonds

NEET 2019

MCQ (Single Correct Answer)

-1

The manganate and permanganate ions are tetrahedral due to :

The $$\pi $$-bonding involves overlap of p-orbitals of oxygen with p-orbtials of manganese

The $$\pi $$-bonding involves overlap of d-orbitals of oxygen with d-orbitals of manganese

The $$\pi $$-bonding involves overlap of p-orbitals of oxygen with d-orbitals of manganese

There is no $$\pi $$-bonding

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