2256: Consider the following countries of South Asia
(a) Bangladesh
(b) India
(c) Pakistan
(d) Sri Lanka
The descending order of literacy status of these countries is
(a) 4, 2, 1, 3
(b) 2, 4, 3, 1
(c) 4, 2, 3, 1
(d) 2, 4, 1, 3
2257: A ball is dropped from the top of a high building with a constant acceleration of 9.8 m/s2. What will be its velocity after 3 seconds ?
(a) 9.8 m/s
(b) 19.6 m/s
(c) 29.4 m/s
(d) 39.2 m/s
2258: The deficiency of Vitamin D causes:
(a) Rickets
(b) Night blindness
(c) Pellagra
(d) Scurvy
2259: With reference to 'fuel cells' in which hydrogen-rich fuel and oxygen are used to generate electricity. Consider the following statements :
1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is / are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2260: The country scene is one of desolation, with dry, deep and narrow gullies. There is little vegetation and that too thorny shrub variety. Human settlements are scarce. The scene may belong to:
(a) West Rajasthan
(b) Bundelkhand region
(c) Malwa region
(d) Chambal valley