1461. The science of the production of fine human-springs is _______.
B. Eugenics *
1462. The escape velocity of a projectile from the earth is approximately_____.
B. 11.2km/s *
1463. When a beam of light passes front air into water, its speed.
B. Decreases *
C. remains the same
1464. Select the correct answer.
A closed bottle containing water at 30C is carried to the moon in a spaceship. If it is placed on the surface of the moon, What will happen to the water as soon as the lid is opened?
A. Water will boil *
B. Water will freeze
C. Nothing will happen to it
D. It will decompose into H2 and O.
1465. A man standing at a distance of 1 metre from a mirror wishes to take the photograph of his image in the mirror .At what distance should he place his camera from the mirror?
A. 1/2 a metre
B. 1 metre
C. 2 metre *
D. 4 metre
1466. A man made element is ______.
A. Plutonium *
1467. Worn-out red corpuscles are decomposed in the .
D. Liver *
1468. Sound waves in air are _________.
A. transverse waves
B. longitudinal waves *
C. may be both types
1469. What is Botany?
A. Science concerning animal bodies
B. Study of coins
C. Study of plant life *
D. Study of bacteria
1470. Cataract, an eye disease, appears to have occured if_______.
A. Eyes water too much
B. Long or short sight is radically affected
C. The eyes remain swollen and aching
D. General vision has become excessively cloudy *