Everyday Science MCQs Part 5
A. Methane
B. Ethane
C. Butane
D. Propane
42. Which of the following bases is involved in the making of soap.?
A. Baking soda
B. Ammonia
C. Washing soda
D. Caustic soda
43. Which on of the following has the same atomic number and atomic weight.?
A. Helium
B. Oxygen
C. Nitrogen
D. Hydrogen
44. The purest from of iron is.?
A. Wrought iron
B. Pig iron
C. Cast iron
D. Stainless steel
45. The most malleable metal is .?
A. Platinum
B. Gold
C. Silver
D. Iron
46. The major constituent of air is.?
A. Carbon dioxide
B. Oxygen
C. Hydrogen
D. Nitrogen
47. The first metal to be used by man was
A. Aluminum
B. Silver
C. Iron
D. Copper
48. What is the only element that normally has no neutrons.?
A. Oxygen
B. Krypton
C. Neon
D. Hydrogen
49. The development of the ultra microscope makes use the of the.?
A. Edison effects
B. Tyndall effect
C. Brownian motion
D. None of above
50. Which of the following elements is found in all organic compounds.?
A. Calcium
B. Nitrogen
C. Oxygen
D. Carbon