NEET Chemistry MCQ: NCERT d- and f-Block Properties | NEET.Guide Questions

Iron exhibits +2 and +3 oxidation states. Which of the following statements about iron is incorrect?

A

Iron readily forms covalent bonds

B

The electronic configuration of Fe²⁺ is [Ar]3d⁶

C

The electronic configuration of Fe³⁺ is [Ar]3d⁵

D

Iron doesn't readily form the +1 oxidation state

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :oxidation states, ionic character, volatility, hydrolysis, basicity

Related Questions

Which concept is NOT explained by Mendel's laws?

A

Dominance and recessiveness

B

Segregation of alleles

C

Independent assortment

D

Polygenic inheritance

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

PYQ YEAR: 2022

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Mendelian Inheritance, Polygenic Inheritance

The $4f$ subshell is progressively filled across the lanthanide series. Which $Ln^{3+}$ ion is expected to be diamagnetic with a completely filled $4f$ subshell?

A

$Gd^{3+}$

B

$Lu^{3+}$

C

$Ce^{3+}$

D

$Eu^{3+}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

PYQ YEAR: 2024

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Lanthanides, Magnetism, Electronic Configuration, Aufbau Principle

The composition of bell metal is

A

Cu + Sn

B

Cu + Ni

C

Cu + Zn

D

Cu + Ag

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Composition of alloys, Bell metal

Iron exhibits +2 and +3 oxidation states. Which of the following statements about iron is incorrect?

A

Iron readily forms covalent bonds

B

The electronic configuration of Fe²⁺ is [Ar]3d⁶

C

The electronic configuration of Fe³⁺ is [Ar]3d⁵

D

Iron doesn't readily form the +1 oxidation state

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Analyzing

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :oxidation states, ionic character, volatility, hydrolysis, basicity

Anhydrous ferric chloride is prepared by

A

Dissolving ${\rm{Fe}}{\left( {{\rm{OH}}} \right)_3}$ in concentrated ${\rm{HCl}}$ .

B

Dissolving ${\rm{Fe}}{\left( {{\rm{OH}}} \right)_3}$ in dilute ${\rm{HCl}}$ .

C

Passing dry ${\rm{HCl}}$ over heated iron scrap.

D

Passing dry ${\rm{C}}{{\rm{l}}_2}$ gas over heated iron scrap.

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Chemical reactions, synthesis of metal halides, anhydrous compounds

Explain why the reduction potential of $\mathrm{Mn}^{3+}/ \mathrm{Mn}^{2+}$ is more positive compared to $\mathrm{Cr}^{3+}/ \mathrm{Cr}^{2+}$ and $\mathrm{Fe}^{3+}/ \mathrm{Fe}^{2+}$ .

A

Due to the stable half-filled d5 configuration of Mn2+.

B

Due to higher ionization enthalpy of Mn.

C

Due to larger size of Mn2+ ion.

D

Due to the increased metallic character of Mn.

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

PYQ YEAR: 2024

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Redox Reactions, Electronic Configuration, Transition Elements

The pair of metals which dissolve in NaOH( $aq$ .) is:

A

Al, Cu

B

Zn, Cd

C

Pb, Sn

D

Zn, Al

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :Amphoteric metals, Reactions with bases

The ionization potential of transition metals is …. than $p$ -block elements.

A

Less

B

More

C

Equal

D

None of these

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :ionization potential, transition metals, p-block elements, periodic trends

Which of the following transition metal oxides is basic?

A

$ext{CrO}_3$

B

$ext{Cr}_2ext{O}_3$

C

$ext{CrO}$

D

$ext{CrO}_2$

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

PYQ YEAR: 2023

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :d-block elements, transition metal oxides, acidic and basic character

The colour of $_{62}{\rm{S}}{{\rm{m}}^{3 + }}$ is yellow. The expected colour of ${{\rm{\;}}_{66}}{\rm{D}}{{\rm{y}}^{3 + }}$ is

A

Yellow

B

Colorless

C

Pink

D

Green

Question Tags

📚 Subject:Chemistry

📑 Chapter:d- and f-Block Elements

🎯Topic:Characteristic Properties

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Lanthanide colors, Electronic transitions, f-f transitions

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