WB JEE 2025 | WB JEE Year Wise Previous Years Questions

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)

-0

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

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

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

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

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

WB JEE 2025

MCQ (Single Correct Answer)

-0.25

If $f(x)=\left\{\begin{array}{ll}x^2+3 x+a, & x \leq 1 \\ b x+2, & x>1\end{array}, x \in \mathbb{R}\right.$, is everywhere differentiable, then :

$a=3, b=5$

$a=0, b=5$

$a=0, b=3$

$a=b=3$

WB JEE 2025

MCQ (Single Correct Answer)

-0.25

Let $p(x)$ be a real polynomial of least degree which has a local maximum at $x=1$ and a local minimum at $x=3$. If $p(1)=6$ and $p(3)=2$, then $p^{\prime}(0)$ is equal to :