Which of the following pairs correctly matches a physical quantity with its SI unit?

C. Luminous Intensity – Candela

Everyday Science · Introduction to Everyday Science · page 5 of 7

List of SI Units (97) MCQs with Answers

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List of SI Units MCQs (41–50)

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Past paper MCQs in this chapter · See all past papers

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41.
Which of the following pairs correctly matches a physical quantity with its SI unit?
Correct Answer: D. All of these
One-liner
All the given pairs are correctly matched, so the correct answer is All of these.
42.
Length, mass, electric current, time, intensity of light and amount of substance are examples of _?
Correct Answer: B. Base quantities
One-liner
Length, mass, electric current, time, intensity of light and amount of substance are examples of base quantities.
43.
The centimeter (cm) is the unit of _?
Correct Answer: D. Distance
One-liner
The centimeter (cm) is a unit of distance (length) in the metric system.
44.
The prefix femto refers to _?
Correct Answer: C. 10⁻¹⁵
One-liner
The prefix "femto" refers to 10⁻¹⁵ (one quadrillionth).
45.
Past Paper MCQ
The SI unit of “Pressure” is ?
Correct Answer: C. Pascal
One-liner
The SI unit of pressure is Pascal, named after the French scientist Blaise Pascal.
46.
One nanometer is equal to ?
Correct Answer: B. 1 × 10⁻⁹ meter
One-liner
One nanometer is equal to 1 × 10⁻⁹ meter (one billionth of a meter).
47.
The value of prefix deka is _?
Correct Answer: D. 10^1
One-liner
The prefix "deka" (or deca) has a value of 10^1, meaning it represents a factor of ten.
48.
The SI unit of power is ?
Correct Answer: B. Watt
One-liner
The SI unit of power is Watt (W), which is defined as one joule per second.
49.
Which one of the following is a derived quantity?
Correct Answer: D. m²
One-liner
m² is a derived quantity because it is obtained by multiplying two lengths (metres), whereas kg, second, and kelvin are base quantities.
50.
The SI unit of Light is?
Correct Answer: B. Candela
One-liner
The SI unit of light (luminous intensity) is Candela.

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List of SI Units (97) MCQs with Answers

List of SI Units MCQs (41–50)

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