Boric acid is an acid because its molecule

Mass of living matter at a trophic level in an area at any time is called

Which one of the following ions has the same number of unpaired electrons as those present in $V^{3+}$ ion?

If $\left(\frac{2}{3}, 0\right)$ is the centroid of the triangle formed by the lines $4x^2-y^2=0$ and $lx+my+n=0$,then $l+m+n=$

The terminal velocity of a liquid drop of radius $r$ falling through air is $v$. If two such drops are combined to form a bigger drop, the terminal velocity with which the bigger drop falls through air is (ignore any buoyant force due to air).

Which is the largest flower?