Question

# It is desirable that the standards of units be easily available, invariable, indestructible and easily reproducible. If we use foot of a person as a standard unit of length, which of the above features are not present?

A

Easily available

B

Invariable

C

Indestructible

D

Easily reproducible

Solution

## The correct options are A Easily available C Indestructible D Easily reproducible The foot of a person is invariable but not available, not indestructible and not easily reproducible. While reproducing there can be human error.

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