Q. 21 B4.1( 56 Votes )

# Fill in the blank

(i) We know the basic relation that

1km = 1000m

1 m = 1000 mm

Therefore 1 km = 1000×1000

= 106 mm

We also know that

1 m = 1012pm

Therefore 1 km = 1000× 1012 pm

= 1015pm

(ii) We know the basic relation that

1 kg = 1000 g

1 g = 1000 mg

So, 1 mg = 10-3g

Therefore 1 mg = 10-3 × 10-3 kg

= 10-6 kg

1 g = 109ng

1000 mg = 109 ng

1 mg = [109]/103 ng

= 106 ng

(iii) We know the basic relation that

1 L = 1000 ml

1 ml = 10-3 L

1 ml = 10-3 dm3

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