NEET 2022 Phase 2 | d and f Block Elements Question 14 | Chemistry

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

Given below are two statements :

Statement I : Cr²⁺ is oxidising and Mn³⁺ is reducing in nature.

Statement II : Sc³⁺ compounds are repelled by the applied magnetic field.

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

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are correct

Both Statement I and Statement II are incorrect

Statement I is correct but Statement II is incorrect

NEET 2021

MCQ (Single Correct Answer)

-1

The incorrect statement among the following is :

Actinoids are highly reactive metals, especially when finely divided.

Actinoid contraction is greater for element to element than lanthanoid contraction.

Most of the trivalent Lanthanoid ions are colorless in the solid state.

Lanthanoids are good conductors of heat and electricity.

NEET 2021

MCQ (Single Correct Answer)

-1

Which of the following reactions is the metal displacement reaction? Choose the right option.

$$2Pb{(N{O_3})_2} \to 2PbO + 4N{O_2} + {O_2} \uparrow $$

$$2KCl{O_3}\buildrel \Delta \over \longrightarrow 2KCl + 3{O_2}$$

$$C{r_2}{O_3} + 2Al\buildrel \Delta \over \longrightarrow A{l_2}{O_3} + 2Cr$$

$$Fe + 2HCl \to FeC{l_2} + {H_2} \uparrow $$

NEET 2021

MCQ (Single Correct Answer)

-1

Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of :

Having similar chemical properties

Belonging to same group

Diagonal relationship

Lanthanoid contraction

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