JEE Main 2023 (Online) 13th April Evening Shift | Coordination Compounds Question 52 | Chemistry

1

JEE Main 2023 (Online) 13th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Which of the following complexes will exhibit maximum attraction to an applied magnetic field?

A

$$\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$$

B

$$\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$$

C

$$\left[\mathrm{Co}(\mathrm{en})_{3}\right]^{3+}$$

D

$$\left[\mathrm{Zn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$$

2

JEE Main 2023 (Online) 13th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

The mismatched combinations are

A. Chlorophyll - Co

B. Water hardness - EDTA

C. Photography $$-\left[\mathrm{Ag}(\mathrm{CN})_{2}\right]^{-}$$

D. Wilkinson catalyst $$-\left[\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3} \mathrm{RhCl}\right]$$

E. Chelating ligand - D-Penicillamine

Choose the correct answer from the options given below :

A

A and E Only

B

D and E Only

C

A and C Only

D

A, C, and E Only

3

JEE Main 2023 (Online) 12th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	LIST I Complex		LIST II CFSE ($$\Delta_0$$)
A.	$$\mathrm{[Cu(NH_3)_6]^{2+}}$$	I.	$$-0.6$$
B.	$$\mathrm{[Ti(H_2O)_6]^{3+}}$$	II.	$$-2.0$$
C.	$$\mathrm{[Fe(CN)_6]^{3-}}$$	III.	$$-1.2$$
D.	$$\mathrm{[NiF_6]^{4-}}$$	IV.	$$-0.4$$

Choose the correct answer from the options given below:

A

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

B

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

C

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

D

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

4

JEE Main 2023 (Online) 11th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : $$\left[\mathrm{CoCl}\left(\mathrm{NH}_{3}\right)_{5}\right]^{2+}$$ absorbs at lower wavelength of light with respect to $$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5}\left(\mathrm{H}_{2} \mathrm{O}\right)\right]^{3+}$$

Reason R : It is because the wavelength of the light absorbed depends on the oxidation state of the metal ion.

In the light of the above statements, choose the correct answer from the options given below:

A

$$\mathrm{A}$$ is false but $$\mathrm{R}$$ is true

B

Both $$\mathrm{A}$$ and $$\mathrm{R}$$ are true but $$\mathrm{R}$$ is NOT the correct explanation of $$A$$

C

Both $$\mathrm{A}$$ and $$\mathrm{R}$$ are true and $$\mathrm{R}$$ is the correct explanation of $$\mathrm{A}$$

D

$$\mathrm{A}$$ is true but $$\mathrm{R}$$ is false