The separation of a racemic mixture into pure enantiomers is termed as

What is responsible for the resistance of insects to insecticides?

$A$ coin is tossed $n$ times. The probability of getting a head at least once is greater than $0.8$. Then,the least value of such $n$ is:

Let $P = \{\theta : \sin \theta - \cos \theta = \sqrt{2} \cos \theta\}$ and $Q = \{\theta : \sin \theta + \cos \theta = \sqrt{2} \sin \theta\}$ be two sets,then:

Seven white balls and three black balls are randomly arranged in a row. The probability that no two black balls are placed adjacently is

If $f(x) = (x^2 - 1)^7$,then $f^{(14)}(x)$ is equal to