Chapter Exam

Chapter 1: Measurements — Online MCQ Test

Q: What is the SI unit of length?

Answer: A. Metre — The SI unit of length is metre. It is the standard unit used to measure distance.

Q: Which instrument is used to measure the length of a small object accurately?

Answer: B. Ruler — A ruler is commonly used to measure small lengths accurately. It has marked units such as centimetres and millimetres.

Q: Fill in the blank: 1 metre = ____ centimetres.

Answer: B. 100 — One metre is equal to 100 centimetres. This is a basic unit conversion in the metric system.

Q: A bottle contains 2 litres of water. How many millilitres of water does it contain?

Answer: C. 2000 mL — 1 litre = 1000 millilitres, so 2 litres = 2000 millilitres. This is a direct conversion between capacity units.

SCIENCE · Samacheer Kalvi 7th · Tamil Nadu State Board

Practice Chapter 1: Measurements with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 7th SCIENCE. This chapter covers: Units measurement accuracy conversion Measurement concepts using standard units measuring tools accuracy and unit conversions. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 1: Measurements — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 7th SCIENCE — Chapter 1: Measurements, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the SI unit of length?

A. Metre ✓
B. Kilogram
C. Second
D. Litre

Answer: A. Metre
The SI unit of length is metre. It is the standard unit used to measure distance.

Which instrument is used to measure the length of a small object accurately?

A. Measuring tape
B. Ruler ✓
C. Thermometer
D. Clock

Answer: B. Ruler
A ruler is commonly used to measure small lengths accurately. It has marked units such as centimetres and millimetres.

Fill in the blank: 1 metre = ____ centimetres.

A. 10
B. 100 ✓
C. 1000
D. 50

Answer: B. 100
One metre is equal to 100 centimetres. This is a basic unit conversion in the metric system.

A cloth is measured using a scale, but the zero mark is broken and not visible. What is the best way to measure accurately?

A. Start from the first visible mark and subtract the initial reading ✓
B. Guess the length by eye
C. Use any random point on the scale without calculation
D. Measure only one end of the cloth

Answer: A. Start from the first visible mark and subtract the initial reading
When the zero mark is damaged, measurement can still be done by noting the initial reading and subtracting it. This gives a more accurate result.

A bottle contains 2 litres of water. How many millilitres of water does it contain?