The International system of units MCQs and answers are most important for NEET, AIIMS, JEE, CAT, GMAT, Bank exams and other entrance exams. These great online learning quizzes help you to revise the content from the latest questions available in the exam. The International System of Units, known by the international abbreviation SI in all languages and sometimes pleonastically as the SI system, is the modern form of the metric system and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units. The system also establishes a set of twenty prefixes to the unit names and unit symbols that may be used when specifying multiples and fractions of the units.

## International System of Units MCQs and Answers

**1. What is the standard unit of measurement of Force?**

a) Newton

b) Joule

c) Meter

d) Newton-meter

**Answer: **a

**2. 89 Mega Joules can also be expressed as _____**

a) 8900 Joules

b) 89000000 Joules

c) 89000 Joules

d) 890000 Joules

**Answer: **b

**3. Convert 5 N to Dynes.**

a) 500000 Dynes

b) 500 Dynes

c) 5 Dynes

d) 0.5 Dynes

**Answer: **a

**4. Which of the following is not a system of units?**

a) MKS

b) CGS

c) SI

d) Decibel

**Answer: **d

**5. What does a Voltmeter measure?**

a) Voltage

b) Current

c) Length

d) Speed

**Answer: **a

**6. What is the unit of measurement of solid angles?**

a) Steradians

b) Degrees

c) Radians

d) Grades

**Answer: **a

**7. Which of the following system matches with the SI unit system?**

a) FPS

b) MKS

c) CGS

d) American system

**Answer: **b

**8. Which of the following is a unit of temperature?**

a) Degree

b) Meter

c) Second

d) Fahrenheit

**Answer: **d

**9. The number of base units for measuring physical quantities according to the SI system are ____**

a) 1

b) 10

c) 7

d) 8

**Answer: **c

**10. What is the unit for measuring intensity of light?**

a) Candela

b) Lightyear

c) Meter

d) Mol

**Answer: **a

**11. What is the full form of SI?**

a) Standard International

b) System International

c) Scientific International

d) Science International

**Answer: **b

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### FAQs on International System of Units

**What is the International System of Units called?**

The metric system is a system of measurement defined by the International System of Units (also called the SI). The SI contains a list of seven base units used to derive a variety of other units.

**What is standard international unit?**

Standard international unit (SI) refers to an internationally accepted system of physical units, using the meter, kilogram, second, ampere, kelvin, mole and candela as the basic units of length, mass, time, electric current temperature amount of substance and luminous intensity respectively. SI is derived from the meter–kilogram–second system of units rather than any version of the metric system. From a scientific point of view a standard has a slightly different meaning: it means that a given system of units can be used in all situations without any conversion factors.

**Why is the International System of Units?**

The International System of Units (SI) provides definitions of units of measurement that are widely accepted in science and technology and which set measurement standards agreed to through the Convention of the Meter, a diplomatic treaty between fifty-four nations. The system defines seven base units from which all other SI units of length, area, volume, mass, electric current and a number of other derived units are derived.

Categories: Units and Measurements