2551: 12 constellations referred to as zodiac are:
(a) Imaginary region that encompass the path of the planets.
(b) Signs of Roman gods.
(c) A group of stars.
(d) None of the above
2552: With reference to technologies for solar power production, consider the following statements :
1. Photovoltaics is a technology that generates electricity by direct conservation of light into electricity, while Solar Thermal is a technology that utilizes the Sunss rays to generate heat which is further used in electricity generation process.
2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC).
3. India has manufacturing base for Solar Thermal technology, but not for Photovoltaics.
Which of the statements given aboveis/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1, 2 and 3
(d) None
2553: What is the Galileo Project which has been in news recently?
(a) An intercountry programme of missile shield developed by the United States of America
(b) A project developed by India with assistance from Canada
(c) An environmental protection project being developed by Japan
(d) A multi-satellite navigation project being developed by the European Union
2554: Which one of the following metals does not form amalgams ?
(a) Zinc
(b) Copper
(c) Magnesium
(d) Iron
2555: In high mountain regions bleeding through nose occurs because:
(a) The pressure of the blood capillaries is higher than the outside pressure
(b) The pressure at high altitudes is greater than that in the plains
(c) The blood pressure increases at high altitudes
(d) The blood pressure decreases at high altitudes