Ethers,when dissolved in cold concentrated sulphuric acid,form:

The $\pi$-acid ligand which uses its $d$-orbital during synergic bonding in its complex compound is

Which final cytochrome in the respiratory chain donates electrons to oxygen?

The number of atoms in $100 \ g$ of an $fcc$ crystal with density $d = 10 \ g/cm^3$ and cell edge length $a = 100 \ pm$ is:

The voltage of an $AC$ source varies with time according to the equation $V = 100 \sin(100\pi t) \cos(100\pi t)$,where $t$ is in seconds and $V$ is in volts. Then:

Which of the following has the highest boiling point?