341: The water pollution in river is measured by the dissolved amount of

(a) Chlorine
(b) Ozone
(c) Nitrogen
(d) Oxygen
342: Photosynthesis generally occurs in which portions of the plant?

(a) Leaf and other chloroplast bearing parts

(b) Steam and leaf

(c) Roots an chloroplast bearing parts

(d) Bark and leaf
343: Who among the following presided over the Buddhist Council held during the reign of Kanishka at Kashmir ?

(a) Parsva

(b) Nagarjuna

(c) Sudraka

(d) Vasumitra
344: Main constituents of Biogas are:

(a) Methane and Carbon dioxide

(b) Ethylene and Carbon dioxide

(c) Butane and Carbon monoxide

(d) Methane and Carbon monoxide
345: Arrange the following Buddhist councils in a chronological order:

(1) Vaishali

(2) Rajagraha

(3) Patliputra

(4) Sreenagar

--------------------------------

(a) 1, 4, 3, 2

(b) 3, 2, 1, 4

(c) 4, 1, 2, 3

(d) 2, 1, 3, 4