The part of the fallopian tube closest to the ovary is -

Which of the following compound$(s)$ has '$Z$' configuration?

An ideal gas undergoes a quasi-static, reversible process in which its molar heat capacity $C$ remains constant. If during this process the relation of pressure $P$ and volume $V$ is given by $PV^n = \text{constant}$, then $n$ is given by (Here $C_P$ and $C_V$ are molar specific heat at constant pressure and constant volume, respectively).

What will be the ratio of de-Broglie wavelengths of a proton and an $\alpha$-particle of the same energy?

The lines $ax^2+2hxy+by^2=0$ are at right angles if

$A$ mercury drop of radius $1 ~cm$ is sprayed into $10^6$ drops of equal size. The energy expended in joules is (Surface tension of mercury is $460 \times 10^{-3} ~N/m$)