Pulses are obtained from which family?

The number of $p\pi-d\pi$ 'pi' bonds present in $XeO_3$ and $XeO_4$ molecules,respectively,are:

Which one of the following is not a biofertilizer?

In space,the equation $by + cz + d = 0$ represents a plane perpendicular to the

Find the value of $-197^{\circ} C$ temperature in Kelvin. (in $~K$)

$n$ conducting wires of same dimensions but having resistivities $1, 2, 3, . . . , n$ are connected in series. The equivalent resistivity of the combination is