Vitamin A plays a major role in the functioning and quality of the body's immune system more specific in the skin and body's mucus membranes.

The Fifth Five Year Plan India was sketched out for the period spanning 1974 to 1979 with the objectives of increasing the employment level, reducing poverty and attaining self-reliance.

Cone cells or cones are photoreceptor cells in the retinas of vertebrate eyes. They respond differently to light of different wavelengths and are thus responsible for colour vision in humans.

Kazakhstan's capital Astana has been renamed Nursultan in honour of long-time leader Nursultan Nazarbayev, who stepped down as President but has retained his influence over the state.

The Asian Wrestling Championship 2019 was held in Xian, China from April 23 to April 28, 2019. India won 16 medals in the championship. India ranked 8th place in the tournament and the first three countries ranked in the tournament were Iran followed by China and Japan.

A mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky. It is an optical illusion caused by atmospheric conditions.

Mercury belongs to the poisonous element. It is very harmful for humans, even it can kill them. In the Denmark, Sweden, and Norway, the use of mercury gas been banned in manufacturing.

According to latest report published by Stockholm International Peace Research Institute (SIPRI), Saudi Arabia accounted for 12% of total global arms imports during 2014-18 period making it world’s largest importer of major arms.

Subhash Chandra Garg is a 1983 batch IAS officer of Rajasthan cadre. He is appointed as the new finance secretary of India.

Indian Railways has decided to become the world’s first green railway by the year 2030.