86: 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
87: Which one of the following companies is associated with the exploration and commercial production of oil in Barmer-Sanchore basin of Rajasthan?
(a) Cairn Energy
(b) ONGC
(c) Reliance Energy Ventures
(d) Reliance Energy Ventures
88: Which of the following Kingdoms were associated with the life of the Buddha?
1. Avanti
2. Gandhara
3. Kosala
4. Magadha
Select the correct answer using the code given below.
(a) 1, 2 and 3
(b) 2 and 4
(c) 3 and 4 only
(d) 1, 3 and 4
89: In which of the following activities are Indian Remote Sensing (IRS) satellites used?
1. Assessment of crop productivity
2. Locating groundwater resources
3. Mineral exploration
4. Telecommunications
5. Traffic studies
Select the correct answer using the code given below.
(a) 1, 2 and 3 only
(b) 4 and 5 only
(c) 1 and 2 only
(d) 1, 2, 3, 4 and 5
90: Some Buddhist rock-cut caves are called chaityas while the others viharas. What is the difference between the two?
(a) Chaitya is a place of worship while vihara is the dwelling place of the monks
(b) Chaitya is the stupa at the far end of the cave while vihara is the hall axial to it
(c) There is no material difference between the two
(d) Vihara is a place of worship while chaitya is the dwelling place of the monks