Two animals which are the members of the same order must also be the members of the same

Which one of the following represents the graph between $\log p$ (on $Y$-axis) and $\frac{1}{T}$ (on $X$-axis)?
($p=$ vapour pressure of a liquid,$T=$ absolute temperature)

If the equation of one tangent to the circle with centre at $(2, -1)$ from the origin is $3x + y = 0$,then the equation of the other tangent through the origin is

Which of the following is less general in characters as compared to genus?

The same current is flowing in two alternating circuits. The first circuit contains only an inductor,and the second contains only a capacitor. If the frequency of the $e.m.f.$ of the $ac$ source is increased,what will be the effect on the value of the current in these circuits?

Power delivered by the $ac$ source of the circuit becomes maximum when