1821: Consider the following statements:
1. The albedo of an object determines its visual brightness when viewed with reflected light.
2. The albedo of Mercury is much greater than the albedo of the Earth.
Which of the statements given above is/ are correct?
(a) Neither 1 nor 2
(b) Both 1 and 2
(c) 2 only
(d) 1 only
1822: 'Net metering' is sometimes seen in the news in the context of promoting the
(a) production and use of solar energy by the households/consumers
(b) use of piped natural gas in the kitchens of households
(c) installation of CNG kits in motor-cars
(d) installation of water meters in urban households
1823: A man jumped at a speed of 5 metres per second from a stationary boat and the boat moved off with the speed of 0.5 metre per second. How many times is the mass of the boat greater than that of the man ?
(a) 5.5 times
(b) 4.5 times
(c) 2.5 times
(d) 10 times
1824: Assertion (A):
Minimum wages in India are fixed in accordance with the levels of living and the labour participation ratios.
Reason (R) :
All workers covered by the Minimum Wages Acts are above the poverty line.
Of these statements
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is correct while R is wrong
(d) A is wrong while R is correct
1825: The rough outline map given shows centres of cement industry labelled 1, 2, 3 and 4. Match these centres with the following sets of names :
Names
(A) Katni
(B) Tirunelveli
(C) Sikka
(D) Churk
Select the correct answer using the codes given below :
Codes :
(a) A-3, B-4, C-2, D-1
(b) A-2, B-4, C-1, D-3
(c) A-1, B-2, C-4, D-3
(d) A-2, B-3. C-1, D-4