Which of the following is $NOT$ an effect of withdrawal syndrome?

$BX_3 + NH_3 \xrightarrow{R.T} BX_3 \cdot NH_3 + \text{Heat of adduct formation } (\Delta H)$. The numerical value of $\Delta H$ is found to be maximum for:

If a force $F$ is applied on a body and it moves with a velocity $v$,the power will be

Observe the following statements:
$I$. If $dy + 2xy dx = 2e^{-x^2} dx$,then $ye^{x^2} = 2x + c$.
$II$. If $ye^{-x^2} - 2x = c$,then $dx = (2e^{-x^2} - 2xy) dy$.
Which of the following is a correct statement?

Let $P, Q, R$ and $S$ be the points on the plane with position vectors $-2 \hat{i}-\hat{j}$,$4 \hat{i}$,$3 \hat{i}+3 \hat{j}$ and $-3 \hat{i}+2 \hat{j}$ respectively. Then the quadrilateral $PQRS$ must be a

$P, Q$ and $R$ are long parallel straight wires in air, carrying currents as shown. The direction of the resultant force on $R$ is: