136: There are 20 students with an average height of 105 cms in a class. Then 10 students with an average height of 120 cms join the class. What will be the average height of the class now?
(a) 100 cms
(b) 110 cms
(c) 120 cms
(d) 130 cms
137: Which of the following pairs of substances can be completely separated by sublimation ?
(a) Sand and iodine
(b) Ammonium chloride and iodine
(c) Sand and sulphur
(d) Salt and sulphur
138: Who started Bhoodan Movement in India?
(a) Gandhiji
(b) Jayaprakash Narayan
(c) Vinoba Bhave
(d) Jawaharlal Nehru
139: Seasonal migration of men and animals from lower to higher altitudes during the summer is known as
(a) Nomadism
(b) Migration
(c) Transhumance
(d) Pastoralism
140: Consider the following statements:
1.The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean.
2. The annual range of temperature is greater in the Northern Hemisphere than that in the Southern Hemisphere.
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