251: The release of which one of the following into ponds and wells helps in controlling the mosquitoes?
(a) Gambusia fish
(b) Snail
(c) Crab
(d) Dogfish
252: Among the following , which one is not an ape
(a) Gibbon
(b) Langur
(c) Orangutan
(d) Gorilla
253: Consider the following statements:
1. National Thermal Power Corporation has diversified into hydropower sector.
2. Power Grid Corporation of India has diversified into telecom sector.
Which of the statements given above is/ are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Explanation:
'NTPC Hydro Limited' is operating small and medium hydro power projects. Presently it has undertaken 'Kol Dam Prject' in Himachal Pradesh. 'Power Grid Corporation of India Limited (PGCIL)' has diversified into telecom business to utilise spare telecommunication capacity available with the unified load dispatch centre.
254: The current price index (base 1960) is nearly 330. This means that
(a) all items cost 3.3 times more than what they did in 1960
(b) the prices of certain selected items have gone upto 3.3 times
(c) weighted mean of prices of certain items has increased 3.3 times
(d) gold price has gone up 3.3 times
Explanation:
The Current Price Index (base 1960) is nearly 330. This means that weighted mean of prices of certain items has increased 3.3 times.
255: Standard of living of a nation can be judged by:
(a) Increase in GNP at factor cost
(b) Increase in GNP at cost including taxes and duties
(c) Increase in NNP at factor cost
(d) None of the above