JEE Main 2022 (Online) 29th July Evening Shift | Coordination Compounds Question 88 | Chemistry

1

JEE Main 2022 (Online) 29th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

Octahedral complexes of copper(II) undergo structural distortion (Jahn-Teller). Which one of the given copper (II) complexes will show the maximum structural distortion? (en - ethylenediamine; $$\mathrm{H}_{2} \mathrm{~N}_{-} \mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{NH}_{2}$$)

A

$$\left[\mathrm{Cu}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{SO}_{4}$$

B

$$\left[\mathrm{Cu}(\mathrm{en})\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\right] \mathrm{SO}_{4}$$

C

cis-$$\left[\mathrm{Cu}\left(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]\right.$$

D

trans-$$\left[\mathrm{Cu}\left(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]\right.$$

2

JEE Main 2022 (Online) 28th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List - I (Complex)		List - II (Hybridization)
(A)	$$Ni{(CO)_4}$$	(I)	$$s{p^3}$$
(B)	$${[Ni{(CN)_4}]^{2 - }}$$	(II)	$$s{p^3}{d^2}$$
(C)	$${[Co{(CN)_6}]^{3 - }}$$	(III)	$${d^2}s{p^3}$$
(D)	$${[Co{F_6}]^{3 - }}$$	(IV)	$$ds{p^2}$$

Choose the correct answer from the options given below :

A

A-IV, B-I, C-III, D-II

B

A-I, B-IV, C-III, D-II

C

A-I, B-IV, C-II, D-III

D

A-IV, B-I, C-II, D-III

3

JEE Main 2022 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

Low oxidation state of metals in their complexes are common when ligands :

A

have good $$\pi$$-accepting character

B

have good $$\sigma$$-donor character

C

are having good $$\pi$$-donating ability

D

are having poor $$\sigma$$-donating ability

4

JEE Main 2022 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

$$\mathrm{Fe}^{3+}$$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

A

$$\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$$

B

$$\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}$$

C

$$\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{OH})_{2}(\mathrm{CN})_{4}\right]_{2}$$

D

$$\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}$$