2581: Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called
(a) Keystone species
(b) Allopatric species
(c) Sympatric species
(d) Threatened species
2582: Consider the following statements :
1. A person who has held office as a permanent Judge of a High Court cannot plead or act in any court or before any authority in India except the Supreme Court.
2. A person is not qualified for appointment as a Judge of a High Court in India unless he has for at least five years held a judicial office in the territory of India.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2583: Indias ranking in the Ease of Doing Business Index is sometimes seen in the news. Which of the following has declared that ranking?
(a) Organization for Economic Cooperation and Development (OECD)
(b) World Economic Forum
(c) World Bank
(d) World Trade Organization (WTO)
2584: Given below is a diary of disasters involving hazardous chemicals. Which one of the following is correctly matched?
(a) 1959, Minamata/Nigiata, Japan: Leakage at pesticide plant
(b) 1976, Sevesor Italy: Mercury discharged into waterways
(c) 1984, Bhopal, India: Leakage of dioxin
(d) 1987, Kotka, Finland: Monochloro-benzene split In harbour
2585: When ten persons shake hands with one another, in how many ways is it possible ?
(A) 45
(B) 20
(C) 25
(D) 40