Questions

Herodotus, a Greek author written the first history book in 5th century B.C.

Harappan or Indus Valley Civilization was the first and ancient civilization which started in what now Pakistan and North West India.

The Harappan civilization existed between 3300 BC and 1300 BC.

The ruins of Mohenjo-daro is a major archaeological site that was built by this civilization and is now a UNESCO World Heritage Site.

Rana Pratap Sagar Dam is built on Chambal river in Rajasthan.

The Indian Government awarded 325 routes to airlines as well as helicopter operators under its regional connectivity scheme (RCS) with an emphasis on enhancing flight services to hilly and remote areas, including Kargil under the Regional air Connectivity Scheme (RCS) — Ude Desh Ka Aam Naagrik (UDAN-2).

In the UDAN - 1 it has 128 routes.

BSF - Border Security Force

The motto of the organization BSF is "Duty unto Death."

Wavelength of a wave can be measured with the distance between two nearest crest and crest or nearest troughs. It is measured as armstrong units.

Electronic Flash differs from the consumable bulb flash in important aspects. Instead of creating light by burning up in an atmosphere containing oxygen, a consumable material (each bulb being used therefore only once), it produces a brilliant incandescent by discharging a current for a brief instant through a rarified gas, usually xenon. The gas glows every time the discharge is made through it but it is not consumed, so that many thousands of flashes are obtainable from a single tube, which helps to offset the much higher cost of the initial apparatus.