41. The ability of the Eye to see in the dark, is due to the production of a purple pigment known as___?
A: Rhodopsin
B: Carotene
C: Iodopsin
D: Retinene
42. Nitrogen occurs in plant and animals in the form of __?
A: Fats
B: Minerals
C: Carbohydrates
D: Proteins
43. Almost identical eclipses occur after 18 years and 11 days. This cycle is known as_____?
A: Total Eclipse Cycle
B: Partial Eclipse cycle
C: Saros Cycle
D: None of the above
44. Most abundant color in Earth is____?
A: Green
B: Blue
C: Brown
D: Black
45. LPG consists of mainly:__?
A: Ethane, Hexane and Nonane
B: Methane, Ethane and Hexane
C: Methane, Hexane and Nonane
D: Methane, Butane and Propane
46. The average adult has a blood volume of about _ liters.
A: 5
B: 4
C: 6
D: 7
47. If we multiply force by its duration, what quantity will we get?
A. Work
B. Energy
C. Impulse
D. Momentum
48. What is the time required for half a radioactive substance to decay?
A. Libby factor
B. Bisecting period
C. Half life
D. Disintegration period
49. Temperature generally decreases towards the poles because:
A. Air movement is generally towards the equator
B. Cold polar air masses prevent surface heating of the land
C. Cold surface does not absorb solar energy as readily as warm surfaces
D. Progressively lesser solar energy per unit area falls on the earth’s surface as we move to polar regions
50. What part of the stamen of a flower bears the pollen grains?
A. Filament
B. Ovary
C. Anthrium
D. Anther
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