NEET Chemistry MCQ: NCERT Coordination Compounds Isomerism

🎯Difficulty :Medium

🔄Ncert Concepts :optical isomerism, coordination complexes, chelating ligands, cis-trans isomerism

2.

Which of the following complexes will show geometrical as well as optical isomerism? (en $=$ ethylene diamine)

A

$\left[ {{\rm{Pt}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_2}{\rm{C}}{{\rm{l}}_2}} \right]$

B

$\left[ {{\rm{Pt}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_2}{\rm{C}}{{\rm{l}}_4}} \right]$

C

${\left[ {{\rm{Pt}}{{\left( {{\rm{en}}} \right)}_3}} \right]^{4 + }}$

D

$\left[ {{\rm{Pt}}{{\left( {{\rm{en}}} \right)}_2}{\rm{C}}{{\rm{l}}_2}} \right]$

Question Tags

🎯Difficulty :Medium

🔄Ncert Concepts :coordination complexes, geometrical isomerism, optical isomerism, chelating ligands

3.

The total number of possible structural isomers of the compound $\left[ {{\rm{C}}{{\rm{u}}^{{\rm{II}}}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}} \right]\left[ {{\rm{P}}{{\rm{t}}^{{\rm{II}}}}{\rm{C}}{{\rm{l}}_4}} \right]$ are:

A

3

B

5

C

4

D

6

Question Tags

🔄Ncert Concepts :Coordination Chemistry, Isomerism, Coordination Complexes, Ligand Exchange

4.

Which one of the following has largest number of isomers?(R $=$ alkyl group, en $=$ ethylenediamine)

A

${\left[ {{\rm{Ru}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}{\rm{C}}{{\rm{l}}_2}} \right]^ + }$

B

${\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_5}{\rm{Cl}}} \right]^{2 + }}$

C

${\left[ {{\rm{Ir}}{{\left( {{\rm{P}}{{\rm{R}}_3}} \right)}_2}{\rm{H}}\left( {{\rm{CO}}} \right)} \right]^{2 + }}$

D

${\left[ {{\rm{CO}}{{\left( {{\rm{en}}} \right)}_2}{\rm{C}}{{\rm{l}}_2}} \right]^ + }$

Question Tags

🔄Ncert Concepts :coordination complexes, isomerism, geometrical isomerism, optical isomerism

5.

Which compound exhibits optical isomerism?

A

Pentaamminenitrocobalt (III) iodide

B

Diamminedichloroplatinum (II)

C

$Trans$ -dicyano-bis-(ethylenediamine) chromium (III) chloride

D

Tris-(ethylenediamine)cobalt (III) bromide

Question Tags

🎯Difficulty :Medium

🔄Ncert Concepts :Coordination Chemistry, Optical Isomerism, Chirality

6.

A chiral organic compound (A) with molecular formula $C_7H_{16}O$ on treatment with conc. $H_2SO_4$ at room temperature gives compound (B), $C_7H_{14}$ . Compound (B) does not show geometrical isomerism. How many chiral centers are present in compound (A)?

A

0

B

1

C

2

D

3

Question Tags

🔄Ncert Concepts :Isomerism, Chirality, Dehydration, Alcohols, Alkenes

7.

Which complex is likely to show optical activity?

A

$Trans - {\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}{\rm{C}}{{\rm{l}}_2}} \right]^ + }$

B

${\left[ {{\rm{Cr}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{3 + }}$

C

$Cis - {\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_2}{{\left( {{\rm{en}}} \right)}_2}} \right]^{3 + }}$

D

$Trans - {\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_2}{{\left( {{\rm{en}}} \right)}_2}} \right]^{3 + }}$

Question Tags

🎯Difficulty :Easy

🔄Ncert Concepts :Coordination Complexes, Optical Activity, Chirality, Isomerism

8.

In which of the following pairs both the complex show optical isomerism?

A

$Cis - {\left[ {{\rm{Cr}}{{\left( {{{\rm{C}}_2}{{\rm{O}}_4}} \right)}_2}{\rm{C}}{{\rm{l}}_2}} \right]^{3 - }};\,\,cis - \left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}{\rm{C}}{{\rm{l}}_2}} \right]$

B

$\left[ {{\rm{PtCl}}\left( {{\rm{dien}}} \right)} \right]{\rm{Cl}},{\rm{\;}}{\left[ {{\rm{NiC}}{{\rm{l}}_2}{\rm{B}}{{\rm{r}}_2}} \right]^{2 - }}$

C

$\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{O}}_3}} \right)}_3}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_3}} \right],\,\,cis - \left[ {{\rm{Pt}}{{\left( {{\rm{en}}} \right)}_2}{\rm{C}}{{\rm{l}}_2}} \right]$

D

$\left[ {{\rm{Co}}{{\left( {{\rm{en}}} \right)}_3}} \right]{\rm{C}}{{\rm{l}}_3},\,\,cis - \left[ {{\rm{Co}}{{\left( {{\rm{en}}} \right)}_2}{\rm{C}}{{\rm{l}}_2}} \right]{\rm{Cl}}$

Question Tags

🔄Ncert Concepts :Optical isomerism, Coordination complexes, Chirality, Cis and trans isomers

9.

A compound with molecular formula $C_4H_8O$ exhibits optical isomerism but doesn't react with Tollen's reagent. How many such isomers are possible?

A

1

B

2

C

3

D

4

Question Tags