1686: Which one of the following types of erosion is responsible for the formation of Chambal Ravines ?
(a) Splash
(b) Sheet
(c) Rill
(d) Gully
1687: Which one of the following important trade centres of ancient India was on the trade route connecting Kalyana with Vengi ?
(a) Tagara
(b) Sripura
(c) Tripuri
(d) Tamralipti
1688: There are three tables containing two drawers each. It is known that one of the table contains a silver coin in each of its drawers, another table contains a gold coin in each drawer while the third table contains a silver coin in one drawer and a gold coin in the other. One of the drawers of a table is opened and found to contain a silver coin. What is the probability that the other drawer of that table contains a gold coin ?
(a) 1
(b) 0.5
(c) 0.25
(d) 0.75
1689: With reference to agriculture in India, how can the technique of genome sequencing, often seen in the news, be used in the immediate future?
1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants.
2. This technique helps in reducing the time required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen relationships in crops.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1690: Which one of the following pairs is not correctly matched?
British Prime Minister : Political Party
(A) Harold Wilson : Conservative Party
(B) Marget Thatcher : Conservative Party
(C) John Major : Conservative Party
(D) James Callaghan : Labour Party