1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-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 :

A
Statement I is incorrect but Statement II is correct
B
Both Statement I and Statement II are correct
C
Both Statement I and Statement II are incorrect
D
Statement I is correct but Statement II is incorrect
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The incorrect statement among the following is :
A
Actinoids are highly reactive metals, especially when finely divided.
B
Actinoid contraction is greater for element to element than lanthanoid contraction.
C
Most of the trivalent Lanthanoid ions are colorless in the solid state.
D
Lanthanoids are good conductors of heat and electricity.
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Which of the following reactions is the metal displacement reaction? Choose the right option.
A
$$2Pb{(N{O_3})_2} \to 2PbO + 4N{O_2} + {O_2} \uparrow $$
B
$$2KCl{O_3}\buildrel \Delta \over \longrightarrow 2KCl + 3{O_2}$$
C
$$C{r_2}{O_3} + 2Al\buildrel \Delta \over \longrightarrow A{l_2}{O_3} + 2Cr$$
D
$$Fe + 2HCl \to FeC{l_2} + {H_2} \uparrow $$
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of :
A
Having similar chemical properties
B
Belonging to same group
C
Diagonal relationship
D
Lanthanoid contraction
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