51.Who founded the Brahmo Samaj?
 A. Debendranath Tagore
 B. Keshav Chandra Sen
 C. Raja Ram Mohan Roy
 D. Iswar Chandra Vidyasagar
 
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52.The percentage of plasma in the total blood volume in human beings is about:
 A. 45
 B. 50
 C. 55
 D. 60
 
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53.Which of the following metals has the lowest melting point?
 A. Mercury
 B. Lithium
 C. Potassium
 D. Sodium
 
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54.Human beings can hear the sound range between:
 A. 10 to 20 decibels
 B. 100 to 150 decibels
 C. 50 to 60 decibels
 D. None of the above
 
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55.Gandhiji started Satyagraha in 1919 to protest against:
 A. Rowlatt Act
 B. Cornwallis
 C. Simpson
 D. O.Dwyer
 
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56.The age of Sitamma 10 years ago was thrice the age of Radha.10 years hence,Sitamma’s age will be twice that of Radha. What is the ratio of their present age?
 A. 7:3
 B. 3:1
 C. 2:1
 D. None of the above
 
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57.‘Nam Yom’ and Mekong are the chief rivers of:
 A. China
 B. Myanmar
 C. Thailand
 D. Indonesia
 
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58.Which one of the following is the oldest Grand Slam of the World?
 A. Wimbledone
 B. French Open
 C. Australia Open
 D. US Open
 
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59.Approximate value of √6083 × 32.998?
 A. 2574
 B. 2576
 C. 2547
 D. 2579
 
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60.Velocity of sound is minimum in:
 A. Steel
 B. Vacuum
 C. Water
 D. Air
 
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