Which one has the maximum oxidation number of phosphorus?

The number of angular and radial nodes of $4d$ orbital respectively are

The Biuret test is not given by:

What characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactions?

An optical fibre communication system works on a wavelength of $1.3 \mu m$. The number of subscribers it can feed if a channel requires $20 \text{ kHz}$ is:

Condenser $A$ has a capacity of $15 \mu F$ when it is filled with a medium of dielectric constant $15$. Another condenser $B$ has a capacity of $1 \mu F$ with air between the plates. Both are charged separately by a battery of $100 V$. After charging,both are connected in parallel without the battery and the dielectric material being removed from condenser $A$. The common potential now is.......$V$