2656: In the context of which of the following do you sometimes find the terms 'amber box, blue box and green box' in the news?
(a) WTO affairs
(b) SAARC affairs
(c) UNFCCC affairs
(d) India-EU negotiations on FTA
2657: There are 50 students admitted to a nursery class. Some students can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many students can speak Hindi, how many can speak only Hindi and how many can speak only English ?
(a) 21, 11 and 29 respectively
(b) 28, 18 and 22 respectively
(c) 37, 27 and 13 respectively
(d) 39, 29 and 11 respectively
2658: The following States were created after 1960. Arrange them in chronological order
A. Haryana
B. Sikkim
C. Meghalaya
D. Nagaland
(a) D, A, C, B
(b) A, B, C, D
(c) B, A, C, D
(d) A, B, D, C
2659: Acid precipitation is now regarded as a serious problem in some European and Asian countries. Its major cause or source is
(a) discharge of acidic effluents onto neutral or slightly alkaline land where the acidic components precipitate
(b) emissions of sulphur oxides and nitrogen oxides from thermal power plants and burning of fossil fuels; these oxides dissolve in atmospheric water vapour and fall back on earth as acid rain
(c) natural carbon dioxide released during respiration of living organisms dissolves in water, forming carbonic acid which is the chief contributor to acidity in rain water
(d) chloro-fluoro-carbons readily react with various chemicals near the earth's surface, producing acidic intermediates which cause acid precipitation
2660: Match List I with List II and select the correct answer using the codes given below the lists :
List I List II
(Minerals) (Mining area)
I. Graphite (A) Bellary
II. Lead (B) Didwana
III. Salt (C) Rampa
IV. Silver (D) Zawar
Codes:
(a) I-C, II-D, III-A, IV-B
(b) I-A, II-D, III-B, IV-C
(c) I-C, II-A, III-D, IV-B
(d) I-B, II-C, III-A, IV-D