2256: Biological Oxygen Demand (BOD) is a standard criterion for
(a) Measuring oxygen levels in blood
(b) Computing oxygen levels in forest ecosystems
(c) Pollution assay in aquatic ecosystems
(d) Assessing oxygen levels in high altitude regions
2257:
What is the maximum number of different paths that exist between the station A and the station B?
(a) 28
(b) 31
(c) 33
(d) 35
2258: Consider the following statements:
1. The Chief Secretary in a State is appointed by the Governor of that State.
2. The Chief Secretary in a State has a fixed tenure.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2259: When the Indian Muslim League was inducted into the interim government in 1946, Liyaqat Ali Khan was assigned the portfolio of
(a) Foreign affairs
(b) Home
(c) Finance
(d) Defence
2260: At which one of the following places do two important rivers of India originate, while one of them flows towards north and merges with another important river flowing towards Bay of Bengal, the other one flows towards Arabian Sea?
(a) Mahabaleshwar
(b) Badrinath
(c) Amarkantak
(d) Nasik