1141: 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
1142: A walks around a circular field at the rate of one round per hour while B runs around it at the rate of six rounds per hour. They start in the same direction from the same point at 7.30 a.m. They shall first cross each other at
(a) 8.30 a.m.
(b) 8.10 a.m.
(c) 7.48 a.m.
(d) 7.42 a.m.
1143: The term of the Lok Sabha
(a) cannot be extended under any circumstances
(b) can be extended by six months at a time
(c) can be extended by one year at a time during the proclamation of emergency
(d) can be extended for two years at a time during the proclamation of emergency
1144: National Income is the
(a) Net National Product at market price
(b) Net National Product at factor cost
(c) Net Domestic Product at market price
(d) Net Domestic Product at factor cost
1145: They are fantastically diverse. They speak hundreds of languages and dialects. They comprise scores of ethnic groups. They include highly industrialised economies and up-and-coming economies. They span half the surface of the earth and are home to two-fifths of the world's population. The group of countries referred to here belongs to
(a) SAPTA
(b) APEC
(c) EC
(d) CIS