2566: Which of the following pairs is/are correctly matched ?
Inventor : Invention
1. Christopher : Hovercraft Cockerell
2. David Bushnell : Submarine
3. J.C. Perrier : Steamship
Select the correct answer using the code given below :
(a) 1 and 2, only
(b) 2 and 3, only
(c) 1 and 3, only
(d) 1, 2 and 3
2567: Jupiter completes one circuit of the Sun in
(a) 13 years
(b) 12 years
(c) 16 years
(d) 10 years
2568: Abinava Bharat a secret society of revolutionaries was organised by
(a) Khudiram Bose
(b) V. D. Savarkar
(c) Prafulla Chaki
(d) Bhagat Singh
2569: In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the
1. decomposer microorganisms to the surface.
2. nutrients to the surface.
3. bottom-dwelling organisms to the surface.
Which of the statements given above is/are correct ?
(a) 1 and 2
(b) 2 only
(c) 2 and 3
(d) 3 only
2570: Commercial production of mineral oil has started recently in which one of the areas of India, labelled 1, 2, 3 and 4 in the rough map given below :
(a) 1
(b) 2
(c) 3
(d) 4