Basic General Knowledge - Study Mode

[#191] The Law of Natural Selection is associated with
Correct Answer

(B) Darwin

Explanation

Solution: The Law of Natural Selection is associated with Darwin. Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

[#192] The Indian space programme began in
Correct Answer

(B) 1962

Explanation

Solution: The Indian space programme began in 1962. The Indian space program began in 1962. In 1969 the Indian space Research Organization (ISRO) was set up and headquartered in Bangalore (presently Bengaluru) for the purpose of rapid development of space technology and its application. In 1972, space commission was established.

[#193] The influx of domestic sewage containing detergents cause nutrient enrichment in water bodies due to the presence of
Correct Answer

(C) phosphates

Explanation

Solution: The influx of domestic sewage containing detergents cause nutrient enrichment in water bodies due to the presence of phosphates. Sewage, sludges, and effluents contain appreciable amounts of phosphates, which become a decisive factor in excessive growth of algae and other forms of life when these wastes are discharged into waterways. The presence of phosphates in a body of water indicates its pollution with sewage or other organic wastes. After proper treatment these wastes may be applied to soil and the phosphates thus used to improve crop growth.

[#194] The member states of European Union are
Correct Answer

(D) All of the above

Explanation

Solution: The member states of European Union are Belgium, Denmark, France and Greece, The Federal Republic of Germany, Republic of Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain and UK.

[#195] The height of the net in the center of the tennis court is
Correct Answer

(D) 3 feet 6 inches

Explanation

Solution: The height of the net in the center of the tennis court is 3 ft. 6 inches. The net is 3 feet 6 inches (1.07 metres) high at the posts, and 3 feet (0.91 metres) high in the center. The net posts are 3 feet (0.91 metres) outside the doubles court on each side or, for a singles net, 3 feet (0.91 metres) outside the singles court on each side.