41. What is measured by metre per second?
(a) Acceleration
(b) Velocity
(c) Speed
(d) Aeroplane’s speed
42. How is the volume measured?
(a) Cubic metre
(b) Metres
(c) Yards
(d) Square metre
43. Which of the following is a unit of area?
(a) Cubic
(b) Square metre
(c) Both of them
(d) None of them
44. How many grains are there in one troy ounce?
(a) 460
(b) 480
(c) 496
(d) 498
45. One metric carat is equal to:
(a) 200 milligrams
(b) 300 milligrams
(c) 400 milligrams
(d) 500 milligrams
46. In petroleum, one barrel is equal to:
(a) 34.97 UK gallons
(b) 42 UK gallons
(c) 0.159 cubic metre
(d) All of them
47. One cubic metre weight is one ton and one UK gallon’s weight is:
(a) 10,022 lb
(b) 8000 lb
(c) 4500 lb
(d) 12000 lb
48. What will be the weight of one litre?
(a) 2 kg
(b) One kg
(c) 3 kg
(d) 3.5 kg
49. How many quarts make one gallon?
(a) 2 quarts
(b) 4 quarts
(c) 5 quarts
(d) 6 quarts
50. How many feet constitute one nautical mile?
(a) 5080
(b) 6080
(c) 7080
(d) 4080