3871: Which one of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?
(a) Chlorofluorocarbons
(b) Nitrous oxide
(c) Sulphur dioxide
(d) Carbon dioxide
3872: The length of its day and the tilt of its axis are almost identical to those of the earth. This is true of
(a) Uranus
(b) Neptune
(c) Saturn
(d) Mars
3873: In which one of the following places is the Shompen tribe found?
(a) Spiti Valley
(b) Nicobar Islands
(c) Nilgiri Hills
(d) Lakshadweep islands
3874: Age of tree can be estimated by:
(a) Counting the number of concentric rings
(b) Counting the nodes and internodes of the trunk
(c) Measuring the girth of the tree trunk
(d) Counting the number of branches
3875: With reference to Mughal India, what is/are the difference/differences between Jagirdar and Zamindar?
1. Jagirdars were holders of land assignments in lieu of judicial and police duties, whereas Zamindars were holders of revenue rights without obligation to perform any duty other than revenue collection.
2. Land assignments to Jagirdars were hereditary and revenue rights of Zamindars were not hereditary.
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2