501: What is Rio+20 Conference, often mentioned in the news?
(a) It is the United Nations Conference on Sustainable Development
(b) It is a Ministerial Meeting of the World Trade Organization
(c) It is a Conference of the Inter-governmental Panel on Climate Change
(d) It is a Conference of the Member Countries of the Convention on Biological Diversity
502: The density of sea water is highest as:
(a) Depth increases and salinity increases
(b) Depth decreases and salinity increases
(c) Depth increases and salinity decreases
(d) Depth decreases and salinity decreases
503: With reference to Changpa community of India, consider the following statements :
1. They live mainly in the State of Uttarakhand.
2. They rear the Pashmina goats that yield a fine wool.
3. They are kept in the category of Scheduled Tribes.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3 only
504: A circle (C), a square (S) and an equilateral triangle (T) have the same perimeter or circumference. The correct increasing order of their areas will be:
(a) T, S, C
(b) C, T, S
(c) T, C, S
(d) C, S, T
505: Natural rubber is a plant product which is chemically known as
(a) Mucilage
(b) Gum
(c) Latex
(d) Resin