591: 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
592: The great Asian river Mekong does not run through :
(a) China
(b) Malaysia
(c) Cambodia
(d) Laos
593: Some species of plants are insectivorous. Why?
(a) Their growth in shady and dark places does not allow them to undertake sufficient photosynthesis and thus they depend on insects for nutrition
(b) They are adapted to growing nitrogen deficient soils and thus depend on insects for sufficient nitrogenous nutrition
(c) They cannot synthesize certain vitamins themselves and depend on the insects digested by them
(d) They have remained in that particular stage of evolution as living fossils, a link between autotrophs and heterotrophs
594: The ideal climatic conditions for the cultivation of rice are
(a) rainfall above 100 cm, temperature above 25°C
(b) cool and moist climate for the entire crop period
(c) rainfall below 100 cm, temperature below 25°C
(d) warm and dry climate during the entire crop period
595: The working of the quartz crystal In the watch is based on the
(a) Photoelectric Effect
(b) Johnson Effect
(c) Piezo-electric Effect
(d) Edison Effect