JEE Main 2021 Question Paper (17-Mar-2021) (Shift 1)

Question 1

With respect to drug-enzyme interaction, identify the wrong statement:

Accepted Answer

Allosteric inhibitor competes with the enzyme's active site

Answer

Non-Competitive inhibitor binds to the allosteric site

Answer

Allosteric inhibitor changes the enzyme's active site

Answer

Competitive inhibitor binds to the enzyme's active site

Question 2

Which of the following is an aromatic compound?

Accepted Answer

""

Answer

Answer

Answer

Question 3

The product "A" in the above reaction is:

Accepted Answer

""

Answer

Answer

Answer

Question 4

A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of this molecule is

Accepted Answer

T-shaped

Answer

see-saw

Answer

planar triangular

Answer

trigonal pyramidal

Question 5

Given below are two statements:Statement I: Potassium permanganate on heating at $573 \mathrm{K}$ forms potassium manganate.Statement II: Both potassium permanganate and potassium manganate are tetrahedral and paramagnetic in nature.In the light of the above statements, choose the most appropriate answer from the options given below:

Accepted Answer

Statement I is true but statement II is false.

Answer

Both statement I and statement II are true

Answer

Statement I is false but statement II is true.

Answer

Both statement I and statement II are false