NEET Chemistry MCQ: NCERT Chemical Equilibrium

🎓 Ncert Level:Application

PYQ YEAR: 2016

⚡ Time Required :3 mins

🔄Ncert Concepts :Weak Base, Equilibrium, Percentage Ionization

2.

In ${\rm{H}}{{\rm{S}}^ - },{{\rm{I}}^ - },{\rm{R}} - {\rm{N}}{{\rm{H}}_2},{\rm{N}}{{\rm{H}}_3}$ order of proton accepting tendency will be:

A

${{\rm{I}}^ - } > N{{\rm{H}}_3} > R{\rm{N}}{{\rm{H}}_2} > {\rm{H}}{{\rm{S}}^ - }$

B

${\rm{N}}{{\rm{H}}_3} > R{\rm{N}}{{\rm{H}}_2} > H{{\rm{S}}^ - } > {{\rm{I}}^ - }$

C

$R{\rm{N}}{{\rm{H}}_2} > N{{\rm{H}}_3} > H{{\rm{S}}^ - } > {{\rm{I}}^ - }$

D

${\rm{H}}{{\rm{S}}^ - } > R{\rm{N}}{{\rm{H}}_2} > N{{\rm{H}}_3} > {{\rm{I}}^ - }$

Question Tags

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Basicity, Proton Acceptor, Inductive Effect, Electronegativity, Acid Strength

3.

Which of the following is a Bronsted acid as well as Bronsted base:

A

${\rm{N}}{{\rm{a}}_2}{\rm{C}}{{\rm{O}}_3}$

B

${{\rm{H}}_2}{\rm{O}}$

C

${\rm{N}}{{\rm{H}}_3}$

D

${\rm{B}}{{\rm{F}}_3}$

Question Tags

🎓 Ncert Level:Understanding

⚡ Time Required :2 mins

🔄Ncert Concepts :Bronsted acid, Bronsted base, amphoteric

4.

Which equilibrium can be described as Lewis acid-base reaction but not Bronsted acid-base reaction?

A

${{\rm{H}}_2}{\rm{O}} + {\rm{C}}{{\rm{H}}_3}{\rm{COOH}}\leftrightharpoons{{\rm{H}}_3}{{\rm{O}}^ + } + {\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - }$

B

$2{\rm{N}}{{\rm{H}}_3} + {{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}\leftrightharpoons2{\rm{NH}}_4^ + + {\rm{SO}}_4^{2 - }$

C

${\rm{N}}{{\rm{H}}_3} + {\rm{C}}{{\rm{H}}_3}{\rm{COOH}}\leftrightharpoons{\rm{NH}}_4^ + + {\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - }$

D

${\left[ {{\rm{Cu}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_4}} \right]^{2 + }} + 4{\rm{N}}{{\rm{H}}_3}\leftrightharpoons{\left[ {{\rm{Cu}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}} \right]^{2 + }} + 4{{\rm{H}}_2}{\rm{O}}$

Question Tags

⚡ Time Required :3 mins

🔄Ncert Concepts :Lewis acid, Lewis base, Bronsted acid, Bronsted base, coordination complex

5.

Which one is the strongest base?

A

${\rm{O}}{{\rm{H}}^ - }$

B

$R{O^ - }$

C

${\rm{NH}}_2^ -$

D

${R^ - }$

Question Tags

⚡ Time Required :2 mins

🔄Ncert Concepts :Basicity, conjugate base, stability of anion, inductive effect

6.

Which equilibrium can be described as Lewis acid-base reaction but not Bronsted acid-base reaction?

A

${{\rm{H}}_2}{\rm{O}} + {\rm{C}}{{\rm{H}}_3}{\rm{COOH}}\leftrightharpoons{{\rm{H}}_3}{{\rm{O}}^ + } + {\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - }$

B

$2{\rm{N}}{{\rm{H}}_3} + {{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}\leftrightharpoons2{\rm{NH}}_4^ + + {\rm{SO}}_4^{2 - }$

C

${\rm{N}}{{\rm{H}}_3} + {\rm{C}}{{\rm{H}}_3}{\rm{COOH}}\leftrightharpoons{\rm{NH}}_4^ + + {\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - }$

D

${\left[ {{\rm{Cu}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_4}} \right]^{2 + }} + 4{\rm{N}}{{\rm{H}}_3}\leftrightharpoons{\left[ {{\rm{Cu}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}} \right]^{2 + }} + 4{{\rm{H}}_2}{\rm{O}}$

Question Tags