4071: What is the approximate percentage of persons above 65 years of age in India's current population?
(a) 14-15%
(b) 8-9%
(c) 11-12%
(d) 5-6%
4072: The sculpture with the three faces of Brahma, Vishnu and Mahesh known as 'Trimurti' appears in:
(a) Ajanta caves
(b) Ellora caves
(c) Kalva caves
(d) Elephanta caves
4073: About 50% of the world population is concentrated between the latitudes of
(a) 5°N and 20°N
(b) 20°N and 40°N
(c) 40°N and 60°N
(d) 20°S and 40°S
4074: Other than resistance to pests, what are the prospects for which genetically engineered plants have been created?
1. To enable them to withstand drought
2. To increase the nutritive value of the produce
3. To enable them to grow and do photosynthesis in spaceships and space stations
4. To increase their shelf life
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 2 and 4 only
(d) 1, 2, 3 and 4
4075: The light from the Sun reaches the Earth in about
(a) 2 min
(b) 4 min
(c) 6 min
(d) 8 min