3761: 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
3762: Consider the following languages :
1. Gujarati
2. Kannada
3. Telugu
Which of the above has/have been declared as Classical Language/Languages by the Government?
(a) 1 and 2 only
(b) 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
3763: Consider the following chemicals :
1. Benzene
2. Carbon tetrachloride
3. Sodium Carbonate
4. Trichloroethylene
Which of the above is/are used as dry cleaning chemicals ?
(a) 1 Only
(b) 2 Only
(c) 1, 2 and 4 Only
(d) 1, 2, 3 and 4
3764: All the six letters of the name SACHIN are arranged to from different words without repeating any letter in any one word.The words so formed are then arranged as in a dictionary. What will be the Position of the world SACHIN in that sequence?
(A) 751
(B) 601
(C) 436
(D) 590
3765: Which one of the following is a modern tank?
(a) Bhim
(b) Akash
(c) Arjun
(d) Prithvi