2041: 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%
2042: With reference to Bombay Natural History Society (BNHS), consider the following statements :
1. It is an autonomous organization under the Ministry of Environment and Forests.
2. It strives to conserve nature through action based research, education and public awareness.
3. It organizes and conducts nature trails and camps for the general public.
Which of the statements given above is/are correct?
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
2043: Diffusion of light in the atmosphere takes place due to
(a) Carbon dioxide
(b) Dust particles
(c) Helium
(d) Water vapours
2044: Assertion (A) : Cellulose is used in making shatter proof glass.
Reason (R) : Polysaccharides are not soluble in water.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
2045: A rectangular piece of iron sheet measuring 50 cm by 100 cm is rolled into a cylinder of height 50 cm. If the cost of painting the cylinder is Rs. 50 per square metre, then what will be the cost of painting the outer surface of the cylinder ?
(a) Rs. 25.00
(b) Rs. 37.50
(c) Rs. 75.00
(d) Rs. 87.50