The number of base units in are?

Difficulty: Easy
A:

3

B:

6

C:

7

D:

9

Which one of the following units is not a derived unit?

Difficulty: Easy
A:

Pascal

B:

Kilogram

C:

Newton

D:

Watt

Amount of a substance terms of numbers is measure in?

Difficulty: Easy
A:

Gram

B:

Kilogram

C:

Newton

D:

Mole

An interval of 200µs is equivalent to?

Difficulty: Easy
A:

0.2s

B:

0.02s

C:

$2\times10^{-4}s$

D:

$2\times10^{-6}s$

Which one of the following is the smallest quantity?

Difficulty: Easy
A:

0.01g

B:

2mg

C:

$100\mu g$

D:

5000 ng

Which instrument is the most suitable to measure the internal diameter of a test tube?

Difficulty: Easy
A:

Metre rule

B:

Vernier Callipers

C:

Measuring tap

D:

Screw guage

A student claimed the diameter of a wire as 1.032 cm using Vernier Callipers up to what extent do you agree with it?

Difficulty: Easy
A:

1 cm

B:

1.0 cm

C:

1.03 cm

D:

1.032 cm

A measuring cylinder is used to measure?

Difficulty: Easy
A:

Mass

B:

Area

C:

Volume

D:

Level of liquid

A student noted the thickness of glass sheet using screw guage. On the main scale, it reads 3 divisions while 8th division on the circular scale coincides with index line. Its thickness is?

Difficulty: Medium
A:

3.8 cm

B:

3.08 mm

C:

3.8 mm

D:

3.08m

Significant figures is an expression are?

Difficulty: Medium
A:

All the digits

B:

All the accurately known digits

C:

All the accurately known digits and the first doubtful digit

D:

All the accurately known and all the doubtful digits