Chapter 1: Measurements — Online MCQ Test
SCIENCE · Samacheer Kalvi 7th · Tamil Nadu State Board
Practice Chapter 1: Measurements with a free chapter-wise online MCQ test.
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.
Chapter 1: Measurements — Important Questions & Answers
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.
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.
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.
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.
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?
- A. 20 mL
- B. 200 mL
- C. 2000 mL
- D. 20,000 mL
Answer: C. 2000 mL
1 litre = 1000 millilitres, so 2 litres = 2000 millilitres. This is a direct conversion between capacity units.
1 litre = 1000 millilitres, so 2 litres = 2000 millilitres. This is a direct conversion between capacity units.