The site where crossing over occurs is known as:

Two closed organ pipes of length $100\,cm$ and $101\,cm$ long give $16$ beats in $20\,sec$ when each pipe is sounded in fundamental mode. Calculate the velocity of sound in $m/s$.

Which of the following is not a biofertilizer?

The moment of inertia of a uniform semicircular disc of mass $M$ and radius $r$ about a line perpendicular to the plane of the disc passing through its center is:

If $y = (\cos x^2)^2$,then $\frac{dy}{dx}$ is equal to:

Which of the following vessels carries the most oxygenated blood?