A. blood circulation
B. nervous system
C. the sense of hearing
D. the height above sea-level

A. artificial rearing of fish.
B. ancient agricultural practices
C. classical dancing of the Dravidians
D. rearing insects for food

A. measuring the intensity of radiation
B. measuring the intensity of light
C. measuring blood pressure
D. measuring angular distances

A. the dying stars that send out blue light in the space
B. the structures of blue giants that the Indonesians set up to ward off evil
C. The blue-colored, giant sized statues of Buddha
D. bright extremely hot galaxies believed to be on outer limits of the universe.

A. pykometer
B. pyrometer
C. photometer
D. potentiometer

A. 0.1%
B. 2%
C. 95%
D. 0%

A. blood platelets
B. plasma
C. red corpuscles
D. white corpuscles

A. Inertia
B. Zero gravity
C. Centre of gravity
D. Acceleration

A. sound energy
B. radio energy
C. mechanical energy
D. electrical energy

A. rotation of earth
B. marginal utility
C. population
D. atmospheric pollution