316: The term nishka, which meant an ornament in the Vedic period, was used in later times to denote a/an
(a) weapon
(b) agricultural implement
(c) script
(d) coin
317: 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
318: Which one of the following is the correct sequence in the order of decreasing length of the three structural parts given below of small intestine in the human body?
(a) Ileum - Jejunum - Duodenum
(b) Ileum - Duodenum- Duodenum
(c) Jejunum -Ileum - Duodenum
(d) Jejunum - Duodenum - Ileum
319: What is the role of ultraviolet (UV) radiation in the water purification systems?
1. It inactivates/kills the harmful micro-organism in water.
2. It removes all the undesirable odours from the water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
320: Which of the following were the aims behind the setting up of the World Trade Organization (WTO) ?
I. Promotion of free trade and resource flows across countries.
II. Protection of intellectual property rights.
III. Managing balanced trade between different countries.
IV. Promotion of trade between the former East Block countries and the western world.
Select the correct answer by using the codes given below :
Codes :
(a) I, II, III and IV
(b) I and II
(c) II and III
(d) I and IV