Chloropicrin is obtained by the reaction of

Which of the following are considered petroleum plants?

What is the gas liberated when alkaline formaldehyde solution is treated with $H_2O_2$?

If $\tan A + \cot A = 4,$ then $\tan^4 A + \cot^4 A$ is equal to

The polar equation of the line perpendicular to the line $\sin \theta - \cos \theta = \frac{1}{r}$ and passing through the point $\left(2, \frac{\pi}{6}\right)$ is

Find the correct stability order for the following carbocations: