Digboi refinery is known as the birthplace of the Oil Industry in India. It was commissioned on 11 December 1901. It has the distinction of being Asia's first refinery and one of the oldest still in operation. Oil was accidentally discovered in 1867 while laying a railway line in Digboi area. It was just found seeping out in dense jungles in Tinsukia district. Digging for oil was started in 1889 and the refinery was set up in 1901 at Digboi.

Chachar was a kind of land allowed to lie fallow for three or four years and then resumed under cultivation. Polaj was the ideal and best type of land throughout the empire. This land was cultivated on a yearly basis and was never allowed to lie fallow. Banjar was the worst kind of land that was left out of cultivation for five years or upwards. Parauti land was kept out of cultivation temporarily to recoup its lost fertility. It was cultivated every two years.

Lord Cornwallis (1786–93) was the first person in India to codify laws in 1793. The code separated the revenue administration from the administration of justice; Created the post of district judge; Introduced permanent Settlement in Bengal (1793); Cornwallis is called 'the father of civil service in India'. Lord Dalhousie was the youngest Governor-General of India (36 Years). He is also known as, Father of the Indian Telegraph, Father of the Indian Railways, Father of the Indian Postal system, Father of Indian Engineering Services. The formation of Gurkha regiments took place in his reign.

* The State Human Rights Commission is a multi-member body consisting of a chairperson and two members.

* The chairperson should be a retired Chief Justice of a High Court, retired  Justice of a High Court and members should be a serving or retired judge of a High Court or a District Judge in the state with a minimum of seven years experience as District Judge and a person having knowledge or practical experience with respect to human rights.

Through a resolution dated 1st June 2005, the Government of India set up the National Statistical Commission (NSC) on the recommendations of the Rangarajan Commission, which reviewed the Indian Statistical System in 2001. The NSC was constituted with effect from 12th July 2006 with a mandate to evolve policies, priorities and standards in statistical matters. The NSC has four Members besides a Chairperson, each having specialization and experience in specified statistical fields.

Hence, option C is correct.

Velocity is the distance covered by an object in a specified direction in unit time interval. That is velocity takes into account the direction also.

Value of velocity can be negative as a negative would mean the object is travelling in the opposite direction than the intended one.

If the displacement of an object is zero, the velocity becomes zero.

Speed of an object is the distance it covers per unit of time, the distance can never be less than its displacement, so the velocity of an object can never be greater than its speed. Therefore, the velocity of an object is less than or equal to its speed.

The correct pairing here would be – Electric Current: Ampere; Temperature: Kelvin; Force: Newton; and Energy: Joule.

The state government of Assam has decided to upgrade the Dehing Patkai wildlife sanctuary into a national park.
Earlier, the National Board of Wildlife (NBWL) under the Environment Ministry had recommended coal mining to be allowed within a portion of Dehing Patkai Elephant Reserve. After the upgradation of tis sanctuary, Assam will have 6 national parks. Dehing Patkai comprises of a variety of unique flora and fauna.