Questions

Digboi, in Assam is where the oldest oil refinery in India. It was build in 1901.

Except Nagaland all other options are capital cities of the states in India. Nagaland is the north eastern state with Kohima as its capital city.

* Shimla is the capital city of Himachal Pradesh. 

* Imphal is the capital city of Manipur.

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.

The 828-metre (2,717 ft) tall Burj Khalifa in Dubai has been the tallest building since 2008.

A nurse cannot diagnose a patient among the given options.