If $\sqrt{x}-\frac{1}{\sqrt{x}}=4$ then $x^2+\frac{1}{x^2}$ is equal to:

In $△ABC, AD$ is the median and $G$ is a point on $AD$ such that $AG:GD=2:1$. Then area $(△BDG):$area $(△ABC)$ is equal to:

Select the most appropriate antonym of the given word.

ACCEPT:

Select the most appropriate option to fill in the blank:

Technology can be _____ and people seem to be more attached to screens than ever before.

Directions: From the options given below, choose the correctly spelt word.

Select the correct active form of the given sentence.

Let the bell be rung every forty minutes.

Directions: Out of the given options, choose the one which can substitute for the given phrase/sentence.

Something which is fit to be eaten.

Choose the most suitable alternative that can best improve the given sentence by substituting the underlined part. If the sentence is correct and no improvement is required, your answer is 'No improvement'.

Biologists believe that increased human activity means an accelerated rate of change in habitat for all creatures of the world.