21. 1000 mano-meters are equal to
(a) 2 micrometer
(b) 1 micrometer
(c) 3 micrometer
(d) 4 micrometer
22. 1000 micro-meters are equal to
(a) 4 millimetre
(b) 2 millimetre
(c) 3 millimeter
(d) 1 millimetre
23. How many millimetres constitute 1 centimetre?
(a) 11 millimetre
(b) 12 millimetre
(c) 10 millimetre
(d) 13 millimetre
24. 1 metre consists of
(a) 100 centimetres
(b) 1000 millimetres
(c) 10 decimeters
(d) All of these
25. How many hectometers are there in 1 kilometre?
(a) 9 hectometers
(b) 11 hectometers
(c) 10 hectometers
(d) 12 hectometers
26. The weight of 1000 milligrams is equal to 1 gram. How many decagrams are there in 1.0 grams?
(a) 2
(b) 1
(c) 3
(d) 4
27. 10 decagrams are equal to 1 hectogram and 10 hectograms are equal to
(a) 2 kilogram
(b) 1 kilogram
(c) 3 kilogram
(d) 4 kilogram
28. How many kilograms constitute 1 quintal?
(a) 50
(b) 100
(c) 200
(d) 250
29. How many cubic millimetres constitute 1 cubic centimetre?
(a) 1000
(b) 2000
(c) 3000
(d) 4000
30. 1 fathom consists of cable length?
(a) 1.828 m
(b) 1.854 m
(c) 1.754 m
(d) 1.831 m