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

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

Assertion $(A)$: $A$ particle of mass $m$ dropped into a hole made along the diameter of the Earth from one end to the other executes simple harmonic motion.
Reason $(R)$: Gravitational force between any two particles is inversely proportional to the square of the distance between them.

Which of the following enzymes hydrolyzes the internal phosphodiester bonds in a polynucleotide chain?

$2, 3$-dimethylhexane contains tertiary,secondary,and primary carbon atoms,respectively:

The period of $\left(\tan \theta - \frac{1}{3} \tan^3 \theta\right) \left(\frac{1}{3} - \tan^2 \theta\right)^{-1}$,where $\tan^2 \theta \neq \frac{1}{3}$,is