Questions

Bicycle is a compound machine in the above given options. A compound machine is a machine that is formed by two or more simple machines.

A morpheme is the smallest unit of a word that provides a specific meaning to a string of letters.

Tractor was the single most important invention to farmers.

Usain Bolt is branded as "Fast Man on Earth".

Chemical weathering is what happens when rocks are broken down and chemically altered.

Chemical weathering is the breakdown of rocks by chemical reactions. Chemical weathering involves changes in the chemical composition of the existing rock to form new rock. Some examples of chemical weathering are hydrolysis, oxidation, carbonation, dissolution, etc.

A gamma ray or gamma radiation, is a penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves and so imparts the highest photon energy.

Gamma rays are emanations that have neither mass nor charge.

Lime mortar is generally made with Hydraulic lime.