Units and Measurements Practice Questions

Class 11 · Physics · 1671 free MCQs with instant results and detailed explanations.

1671

Total

565

Easy

845

Medium

261

Hard

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Topics in Units and Measurements

Dimensional Analysis 475

Errors in Measurement 480

SI Units 716

Sample Questions from Units and Measurements

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Easy

Which of the following is the correct SI unit of mass?

A. Gram

B. Kilogram

C. Tonne

D. Milligram

Show Answer & Explanation

Correct Answer: B

The SI unit of mass is the kilogram (kg).

Easy

Which unit is used to measure electric current in the SI system?

A. Volt

B. Ohm

C. Ampere

D. Watt

Show Answer & Explanation

Correct Answer: C

The SI unit of electric current is the ampere (A).

Easy

What is the SI unit for measuring temperature?

A. Celsius

B. Fahrenheit

C. Kelvin

D. Rankine

Show Answer & Explanation

Correct Answer: C

The SI unit for temperature is the Kelvin (K).

Medium

What is the SI unit of force?

A. Newton

B. Kilogram

C. Joule

D. Pound

Show Answer & Explanation

Correct Answer: A

The SI unit of force is the Newton (N), which is defined as the force required to accelerate a one-kilogram mass by one meter per second squared.

Medium

Which of the following units is NOT an SI unit?

A. Meter

B. Litre

C. Kelvin

D. Foot

Show Answer & Explanation

Correct Answer: D

The foot is a non-SI unit of length. The SI units include meter, liter (a unit of volume), and Kelvin (a unit of temperature).

Medium

The SI unit of energy is?

A. Watt

B. Joule

C. Volt

D. Ampere

Show Answer & Explanation

Correct Answer: B

Energy is measured in Joules (J) in the SI system, where one Joule is defined as the energy transferred when applying a force of one Newton over a distance of one meter.

Medium

A kilometer is how many meters?

A. 100

B. 500

C. 1000

D. 1500

Show Answer & Explanation

Correct Answer: C

One kilometer is equivalent to 1000 meters, as the prefix 'kilo-' means a factor of 1000 in the metric system.

Hard

What is the SI unit of pressure, and how is it defined?

A. Pascal, defined as one Newton per square meter

B. Bar, defined as one kilogram per square meter

C. Atmosphere, defined as one Newton per square centimeter

D. Pound per square inch, defined as one kilogram per square meter

Show Answer & Explanation

Correct Answer: A

The SI unit of pressure is the Pascal (Pa), which is defined as one Newton per square meter (N/m²).

Hard

Which of the following is not a base SI unit?

A. Meter

B. Kilogram

C. Amperes

D. Joule

Show Answer & Explanation

Correct Answer: D

The Joule is a derived unit of energy, while Meter, Kilogram, and Amperes are base SI units.

Q10

Hard

If you have a measurement of 5.0 kg, how many grams does this equal in SI units?

A. 500 grams

B. 50 grams

C. 5,000 grams

D. 5 grams

Show Answer & Explanation

Correct Answer: C

1 kilogram is equal to 1000 grams, so 5.0 kg equals 5,000 grams.

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Units and Measurements — Class 11 Physics Practice Questions Online

This page contains 1671 practice MCQs for the chapter Units and Measurements in Class 11 Physics. The questions are organized by difficulty — 565 easy, 845 medium, 261 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.