WB JEE 2025 | WB JEE Year Wise Previous Years Questions

WB JEE 2025

MCQ (More than One Correct Answer)

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$X$ is an extensive property and $x$ is an intensive property of a thermodynamic system. Which of the following statement(s) is (are) correct?

$x \mathrm{X}$ is extensive.

$\frac{x}{X}$ is intensive.

$\frac{X}{x}$ is extensive.

$\frac{\mathrm{dX}}{\mathrm{dx}}$ is intensive.

WB JEE 2025

MCQ (More than One Correct Answer)

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Which pair of ions among the following can be separated by precipitation method?

Eu (II) and Dy (III)

Gd (III) and Dy (III)

Eu (II) and Yb (II)

Eu (II) and Gd (II)

WB JEE 2025

MCQ (More than One Correct Answer)

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The compound(s) showing optical activity is/are

WB JEE 2025

MCQ (More than One Correct Answer)

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Identify 'P' and 'Q' in the following reaction

$\mathrm{P}=\mathrm{K}_2\left[\mathrm{Cd}(\mathrm{CN})_4\right], \mathrm{Q}=\mathrm{CdS}$

$\mathrm{P}=\mathrm{CdS}, \mathrm{Q}=\mathrm{K}_2\left[\mathrm{Cd}(\mathrm{CN})_4\right]$

$\mathrm{P}=\mathrm{Cd}\left(\mathrm{NO}_3\right)_2, \mathrm{Q}=\mathrm{CdSO}_4$

$\mathrm{P}=\left[\mathrm{Cd}\left(\mathrm{OH}_2\right)_4\right]\left(\mathrm{NO}_3\right)_2, \mathrm{Q}=\left[\mathrm{Cd}\left(\mathrm{NO}_3\right)_4\right]\left(\mathrm{NO}_3\right)_2$

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