561: Four different candles, which can last for 5 hours, 4 hours. 3 hours and 2 hours of burning, respectively, are lit in a room at the same instant and allowed to burn till such time that the three candles in the room get extinguished. The cost of burning each one of these candles is 75 paise per hour. The cost involved is:
(a) Rs. 2.75
(b) Rs. 3.75
(c) Rs. 9.75
(d) Rs. 12.50
562: The basic structure theory of the Constitution of India implies that
(a) certain features of the Constitution are so essential to it that they cannot be abrogated
(b) fundamental rights cannot be abridged or taken away
(c) the Constitution cannot be amended except in accordance with the procedure prescribed in Art, 368
(d) the Preamble of the Constitution cannot be amended for it is not a part of the Constitution and at the same time represents its real spirit
563: Where was the selection of suitable candidates for a particular job first started through competitive examinations?
(a) China
(b) Great Britain
(c) U.S.A.
(d) Germany
564: Which one among the following as awarded the CSIR. Diamond Jubilee Technology Award 2004 in September, 2005 by the Prime Minister of India?
(a) Infosys Technologies Ltd.
(b) Midas Communication Technologies
(c) Tata Consultancy Services
(d) Biocon India Ltd.
565: In which type of rocks, fossils are more abundantly found?
(a) Igneous
(b) Metamorphic
(c) Sedimentary
(d) None of these