2837: The standard time of the following countries is ahead or behind Greenwich Mean Time depending on whether they are east or west of the longitude passing through Greenwich :
I. Cuba
II. Greece
III. Iraq
IV. Costa Rica
V. Japan
Which one of the following sequential orders gives the correct arrangement of the countries according to their standard time from ahead to behind GMT?
(a) V, III, II, I, IV
(b) II, IV, I, III, V
(c) IV, I, III, II, V
(d) III, V, IV, I, II
2838: Which one of the following pairs is not correctly matched ?
Recent Scientific Achievement : Country
(a) Creating the worlds first human chromosome : United Kingdom
(b) Cloning a human embryo for the first time : Germany
(c) Guiding a spacecraft for collision with a comet : USA
(d) Landing a spacecraft on an asteroid : Japan
2839: Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torchlights, electric shavers, etc?
(a) Nickel and cadmium
(b) Zinc and carbon
(c) Lead peroxide and lead
(d) Iron and cadmium