556: 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
557: Arakan Yoma is the extension of the Himalayas located in
(a) Baluchistan
(b) Myanmar
(c) Nepal
(d) Kashmir
558: Consider the following statements :
The satellite Oceansat-2 launched by India helps in
1. estimating the water vapour content in the atmosphere.
2. predicting the onset of monsoons.
3. monitoring the pollution of coastal waters.
Which of the statements given above is/are correct ?
(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
559: Two persons A and B get the same salary. Their basic pays are different. Their allowances are 65% and 80% of their basic pays respectively. What is the ratio of their basic pays?
(a) 7 : 5
(b) 17 : 15
(c) 11 : 10
(d) 12 : 11
560: Some Buddhist rock-cut caves are called chaityas while the others viharas. What is the difference between the two?
(a) Chaitya is a place of worship while vihara is the dwelling place of the monks
(b) Chaitya is the stupa at the far end of the cave while vihara is the hall axial to it
(c) There is no material difference between the two
(d) Vihara is a place of worship while chaitya is the dwelling place of the monks