Questions

A number of possible explanations for why manhole covers are round include :

1. A round manhole cover cannot fall through its circular opening, whereas a square, rectangular, or oval manhole cover could fall in if it were inserted diagonally in the hole.

2. Circular covers don’t need to be rotated or precisely aligned when placing them on the opening.

3. A round manhole cover is easily moved and rolled.

4. Human beings have a roughly circular cross-section.

5. Round tubes are the strongest shape against the compression of the earth around them, so the cover of the tube would naturally be round as well.

6. It’s easier to dig a circular hole.

Raja Ram Mohan Roy, a social and educational reformer, was an idealist who contributed immensely in eradicating social evils prevalent in the society during the 18th century.
He was popularly known as "Father of Modern India".

He was given the title of Raja by the Mughal emperor Akbar Shah II in the year 1830 as he had gone to England as an envoy of the emperor.

Mass wasting, also known as slope movement or mass movement, is the geomorphic process by which soil, sand, regolith, and rock move downslope typically as a solid, continuous or discontinuous mass, largely under the force of gravity, but frequently with characteristics of a flow as in debris flows and mudflows.

Dispute Act, 1947 put certain prohibitions on the right to strike. A strike may be illegal if it contravenes the provision of section 22, 23 or 24 of the Act.