Units and Measurement MCQs with Answers

Units and Measurement MCQs with answers: Following Multiple Choice Questions (MCQs) are based on “Units and Measurement”. It is related to subject Physics, Instrumentation, Industrial Measurement.

Topics: Fundamentals and derived units, System of units.

This topic is mostly beneficial in the field of Instrumentation, Electronics, Electrical and Mechanical Engineering.

These MCQs will be useful in various competitive examinations, entrance examinations, oral examination (Viva voce), certifications and interviews.

MCQ on Units and Measurement

Que.1 Fundamental units are _____ on any other unit.
  1. Dependent
  2. Independent
  3. Either 1 or 2
  4. None of these

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Option 2: Independent

Explanation: Fundamental units are all those units which are independent of any other unit (including themselves).

Que.2 Derived units can be expressed in terms of
  1. Fundamental units
  2. calibrated units
  3. SI units 
  4. CGS Units

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Option 1: Fundamental units

Derived units are all those units which are obtained by multiplying and/or dividing one or more fundamental units with or without introducing any other numerical factor.
Derived units can be expressed in terms of fundamental units.

Que.3 _______ can be reduced to its elementary level.
  1. Derived units
  2. Fundamental units
  3. calibrated units
  4. All of the above

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Option 1: Derived units

Explanation: Derived units can be reduced to its elementary level, which are composed of fundamental units.

Que.4 The fundamental units of SI system are the same as that of
  1. MKS system
  2. CGS Units
  3. FPS System
  4. None of these

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Option 1: MKS system

The MKS (metre, kilogram, second) system of units is the fundamental core of the SI (Systeme Internationale, or International System) of measurement.
As various fields grow new forms of measurements based on MKS, terms or exact definitions may vary in different scientific or engineering disciplines.
These inconsistencies are sorted out by the international committee that defines the SI system of units and keeps it up to date.
So the MKS is the static core, and the SI is the evolving, growing system of metric measurement.

Que.5 Which of the following is not a Fundamental Quantity?
  1. Length  
  2. Time
  3. Angle
  4. Luminous Intensity

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Option 3: Angle

Que.6 Which of the following is not a fundamental unit?
  1. kelvin
  2. mole
  3. ampere
  4. joule

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Option 4: joule

Que.7 Identify the fundamental unit amongst the following.
  1. Newton
  2. Joule
  3. Kelvin
  4. Volt

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Option 3: Kelvin

Que.8 Which of the following is not a derived quantity?
  1. Velocity
  2. Amount of substance
  3. Force
  4. Energy

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Option 2: Amount of substance

Examples of few derived units along with corresponding physical properties are:
Velocity (m/s)
Acceleration (m2/s)
Momentum (kg-m/s)
Force (N)
Density (kg/m3)
Heat (J)
Energy (J)
Power (W), etc.

Que.9 _____ is an SI Unit of Luminous Intensity.
  1. Lumen
  2. Dioptre
  3. Candela
  4. Joule

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Option 3: Candela

Examples of seven fundamental units, their abbreviation and corresponding physical properties are as follows:
Length (Meter, m)
Mass (Kilogram, kg)
Time (Second, s)
Temperature (Kelvin, K)
Amount of substance (Mole, mole)
Electric current (Ampere, A)
Luminous intensity (Candela, cd)

Que.10 The following is an internationally recognized and most widely used unit system
  1. MKS
  2. FPS
  3. SI
  4. All of these


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Option 3: SI

Explanation: Earlier three different units systems were used in different countries. These were CGS, FPS and MKS systems.
Now-a-days internationally SI system of units is followed. In SI unit system, seven quantities are taken as the base quantities.

Que.11 One Yard equal to __ inches.
  1. 36
  2. 38
  3. 40
  4. 42

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Option 1: 36

Que.12 The SI unit of amount of substance is
  1. Joule
  2. Mole
  3. Kilogram
  4. None of the above

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Option 2: Mole

One mole is the amount of substance of a system which contains a many elementary entities (may be atoms, molecules, ions, electrons or group of particles, as this and atoms in 0.012 kg of carbon isotope 6 C 12.

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