3671: For the measurement/estimation of which of the following are satellite images/remote sensing data used?
1. Chlorophyll content in the vegetation of a specific location
2. Greenhouse gas emissions from rice paddies of a specific location
3. Land surface temperatures of a specific location
Select the correct answer using the code given below.
(a) 1 Only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
3672: At a given time, two players are standing on a play-field. The cartesian coordinates of their locations are (20, 60) and (-40, -20) units. What is the distance between the players ?
(a) 60 units
(b) 80 units
(c) 100 units
(d) 140 units
3673: Every year, a month long ecologically important campaign / festival is held during which certain communities / tribes plant saplings of fruit-bearing trees. Which of the following are such communities / tribes?
(a) Bhutia and Lepcha
(b) Gond and Korku
(c) Irula and Toda
(d) Sahariya and Agariya
3674: Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct?
1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
2. The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.
3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
3675: The ancient Indian coins were introduced during the:
(a) 3rd century AD
(b) 3rd century BC
(c) Kanishka's period
(d) Ashoka's reign