Which of the following values indicates hypertension?

The first formed primary phloem is referred to as $A$. The later formed primary phloem is referred to as $B$.
Choose the correct combination of $A$ and $B$.

The spin magnetic moment of cobalt in the compound $Hg[Co(SCN)_4]$ is

The phenomenon of 'industrial melanism' demonstrates:

Where is the compound squamous epithelium found?

The slopes of the focal chords of the parabola $y^2=32x$,which are tangents to the circle $x^2+y^2=4$,are