Question

5. Find odd one out. Give a reason for your choice.
(a) milligram, gram, kilogram, millimetre.
a milligram. gram
(b) year, decade, solar day, light year.
licht
.
(c) Angstrom, mirror, millimetre, milligram.
...
6. Why do we need standard units for measurement?
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Answer 1

Answer:

(a)milimetre

(6)We need standard unit for measurement to make our judgement more reliable and accurate. For proper dealing, measurement should be same for everybody. Thus there should be uniformity in measurement. ... Nowadays Si units in science and technology almost universally.

Explanation:

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Answer 2

(a)Millimeter (not a unit of grams)

(b)solar day (not a unit of years)

(c)Mirror (not a type of unit)

(6) the picture is the answer