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Correct statements among the following are
A) $HCl$ is used as acidic medium in permanganometric titrations.
B) ${Na}_{2} {Cr}_{2} O_{7}$ is more soluble in water than $K_{2} {Cr}_{2} O_{7}$ .
C) ‘Zn’ is a transition element.
D) ‘W’ has the highest melting point among transition elements.

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B and D only

A and D only

A and C only

B and C only

answer is B.

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Detailed Solution

A) Potassium permanganate oxidizes $HCl to {Cl}_{2}$ …. $HCl$ cannot be used as a medium in permanganometry;

C) Zinc is a d-block element but not a transition element

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