2076: Ice skating can be used to demonstrate that when ice is under pressure, its:
(a) Melting point is lowered
(b) Melting point is raised
(c) Melting point remains unchanged
(d) Coefficient of friction with metal is reduced
2077: Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?
(a) They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency.
(b) They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy.
(c) They neutralize the free radicals produced in the body during metabolism.
(d) They activate certain genes in the cells of the body and help delay the ageing process.
2078: Match List-I with List-II and select the correct answer using the code given below the lists:
List-I (Person) List-II (known as)
A. John C. Mather 1. Co-founder of Microsoft
B. Michael Griffin 2. Space Walker
C. Paul G. Allen 3. Administrator of NASA
D. Piers Sellers 4. Nobel Prize Winner,2006 in Physics
(A) 2 1 3 4
(B) 4 1 3 2
(C) 4 3 1 2
(D) 2 3 1 4
2079: Diet is the name of the Parliament in:
(a) U.K.
(b) U.S.A.
(c) India
(d) Japan
2080: The Partnership for Action on Green Economy (PAGE), a UN mechanism to assist countries transition towards greener and more inclusive economies, emerged at
(a) The Earth Summit on Sustainable Development 2002, Johannesburg
(b) The United Nations Conference on Sustainable Development 2012, Rio de Janeiro
(c) The United Nations Framework Convention on Climate Change 2015, Paris
(d) The World Sustainable Development Summit 2016, New Delhi