816: Why the Indian farmers plough their fields during the time interval between two crops?
(a) In order to keep the soil loose for further cultivation
(b) To increase the porosity of the soil
(c) To escape drought
(d) To prevent clodding
817: Which of the following cricketers holds , the record for the highest score in a Cricket Test Match innings by an Indian?
(a) Sunil Gavaskar
(b) Vinoo Mankad
(c) Sachin Tendulkar
(d) Virendar Sehwag
818: Mycorrhiza is a symbiotic association between
(a) Bacteria and roots of higher plants
(b) Algae and roofs of orchids
(c) Fungi and roots of higher plants
(d) Protozoa and roots of higher plants
819: At a time when empires in Europe were crumbling before the might of Napoleon which one of the following Governors- General kept the British flag flying high in India ?
(a) Warren Hastings
(b) Lord Cornwallis
(c) Lord Wellesley
(d) Lord Hastings
820: Contour bunding is a method of conservation used in
(a) desert margins, liable to strong wind action
(b) low flat plains, close to stream courses, liable to flooding
(c) scrublands, liable to spread of weed growth
(d) None of the above