JEE Main Question Paper (04-Sep-2020) (Shift 1)

Question 1

The elements with atomic numbers $101$ and $104$ belong to, respectively:

Accepted Answer

Actinoids and Group $4$

Answer

Group $11$ and Group $4$

Answer

Actinoids and Group $6$

Answer

Group $6$ and Actinoids

Question 2

Which of the following will react with $ \mathrm{CHCl}_3 + \text{alc.} \ \mathrm{KOH} $?

Accepted Answer

Adenine and lysine

Answer

Adenine and proline

Answer

Thymine and proline

Answer

Adenine and thymine

Question 3

The number of isomers possible for $\left[\mathrm{Pt}\left(\mathrm{en}\right){\left({\mathrm{NO}}_{2}\right)}_{2}\right]$ is:

Accepted Answer

$3$

Answer

$2$

Answer

$4$

Answer

$1$

Question 4

The region in the electromagnetic spectrum where the Balmer series lines appear is:

Accepted Answer

Visible

Answer

Microwave

Answer

Infrared

Answer

Ultraviolet

Question 5

For one mole of an ideal gas, which of these statements must be true?
(a) Internal energy $ \mathrm{U} $ and enthalpy $ \mathrm{H} $ each depend on temperature.
(b) Compressibility factor $ \mathrm{Z} $ is not equal to 1.
(c) $ C_{P,m} - C_{V,m} = R $
(d) $ \mathrm{dU} = C_{V} \mathrm{dT} $ for any process.

Accepted Answer

(a), (c) and (d)

Answer

(a) and (c)

Answer

(b), (c) and (d)

Answer

(c) and (d)