2216: The Sixth and the Eighth Five-Year Plans covered the period 1980-85 and 1992-97 respectively. The Seventh Five-Year Plan covered the period
(a) 1987-92
(b) 1986-91
(c) 1985-90
(d) 1988-94
2217: 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
2218: Assertion (A):
Coal-based thermal power stations contribute to acid-rain.
Reason (R):
Oxides of carbon are emitted when the coal burns.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
2219: Consider the following statements:
1. The Barren Island volcano is an active volcano located in the Indian territory.
2. Barren Island lies about 140 km east of Great Nicobar.
3. The last time the Barren Island volcano erupted was in 1991 and it has remained inactive since then.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3
(c) 3 only
(d) 1 and 3
2220: Who among the following was the first Bhakti saint to use Hindi for the propagation of his message ?
(a) Dadu
(b) Kabir
(c) Ramananda
(d) Tulsidas