46. What is the SI unit for mass?
a) gram
b) kilogram
c) pound
d) ounce
Answer: b) kilogram
47. What is the SI unit for length?
a) inch
b) foot
c) meter
d) mile
Answer: c) meter
48. What is the SI unit for time?
a) second
b) minute
c) hour
d) day
Answer: a) second
49. What is the SI unit for amount of substance?
a) mole
b) gram
c) liter
d) meter
Answer: a) mole
50. What is the SI unit for luminous intensity?
a) candela
b) lux
c) lumen
d) watt
Answer: a) candela
