1
CBSE 12th Chemistry Delhi Set 1 - 2023
MCQ (Single Correct Answer)
+1
-0

In the two tetrahedral structures of dichromate ion

A
$$4 \mathrm{Cr}-\mathrm{O}$$ bonds are equivalent in length.
B
$$6 \mathrm{Cr}-\mathrm{O}$$ bonds are equivalent in length.
C
All $$\mathrm{Cr}-\mathrm{O}$$ bonds are equivalent in length.
D
All $$\mathrm{Cr}-\mathrm{O}$$ bonds are non-equivalent.
2
CBSE 12th Chemistry Delhi Set 1 - 2023
MCQ (Single Correct Answer)
+1
-0

The magnetic moment of $$\left[\mathrm{NiCl}_4\right]^{2-}$$

[Atomic number : $$\mathrm{Ni}=28$$ ]

A
$$1.82 \mathrm{~BM}$$
B
$$2.82 \mathrm{~BM}$$
C
$$4.42 \mathrm{~BM}$$
D
$$5.46 \mathrm{~BM}$$
3
CBSE 12th Chemistry Delhi Set 1 - 2023
MCQ (Single Correct Answer)
+1
-0

Assertion (A): Trans $$\left[\mathrm{Cr} \mathrm{Cl}_2(\mathrm{ox})_2\right]^{3-}$$ shows optical isomerism.

Reason (R): Optical isomerism is common in octahedral complexes involving bidentate ligands.

A
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
B
Both Assertion (A) and Reason (R) and true, but Reason (R) is not the correct explanation of the Assertion (A).
C
Assertion (A) is true, but Reason (R) is false.
D
Assertion (A) is false, but Reason (R) is true.
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