251: The blood glucose level is commonly expressed as
(a) mm of Hg
(b) milligram per decilitre
(c) parts per million
(d) grams per litre
252: Foot-and-Mouth disease in animals, a current epidemic in some parts of the world, is caused by
(a) Bacterium
(b) Fungus
(c) Protozoan
(d) Virus
253: The average of X1, X2 and X3 is 14. Twice the sum of X2 and X3 is 30. What is the value of X1 ?
(a) 20
(b) 27
(c) 16
(d) 12
254: Which of the following was the main reason of the downfall of Mauryan empire ?
(a) Weak successors of Ashoka who could not control the empire properly
(b) Religious policy of Ashoka
(c) Ashoka maintained friendly relations with his neighbours
(d) None of the above
255: The continental shelf surrounding the Indian Coast is widest off the
(a) Hooghly Coast
(b) Coromandel Coast
(c) Konkan Coast
(d) South Gujarat Coast