Which carbonyl compound has the maximum dipole moment?

$A$ thin circular ring of mass $M$ and radius $r$ is rotating about its axis with a constant angular velocity $\omega$. Four particles,each of mass $m$,are gently placed on the ring at opposite points of two perpendicular diameters. The new angular velocity of the ring will be:

Anxiety and eating spicy food together in an otherwise normal human may lead to:

Which of the following is $NOT$ produced by the reaction of ethanol with $H_2SO_4$?

Three waves of equal frequency having amplitudes $10 \mu m,$ $4 \mu m,$ and $7 \mu m$ arrive at a given point with a successive phase difference of $\frac{\pi}{2}.$ The amplitude of the resulting wave in $\mu m$ is given by

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