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1 PHYSICS MCQS

How many kilograms are there in 1 tonne?

  • 100
  • 400
  • 1000
  • 4000
Correct Answer: C. 1000

Detailed Explanation

The tonne is a metric unit of mass commonly used to measure large quantities of material, such as grain, metals, or vehicles. It is also called a metric ton. Understanding its relation to kilograms is essential in science, engineering, and daily life.1 tonne = 1000 kilograms (kg). This means that one metric ton is 1000 times heavier than a kilogram. The kilogram (kg) is the base unit of mass in the International System of Units (SI), while the tonne is a derived metric unit used for larger quantities.


For example:




  • If a truck carries 5 tonnes of cement, it means it is carrying 5000 kg of cement.




  • Similarly, a small car weighing 1.2 tonnes would have a mass of 1200 kg.




The tonne is widely used in industries, trade, and transportation because it provides a convenient way to measure large masses without using extremely large numbers in kilograms. It is also used in science and physics calculations, especially in problems involving weight, force, or density.


Quick conversions to remember:




  • 1 kilogram = 1000 grams




  • 1 tonne = 1000 kilograms = 1,000,000 grams




Other options in the question are incorrect:




  • 100 kg (Option 1) is much less than 1 tonne




  • 400 kg (Option 2) and 4000 kg (Option 4) do not correspond to the metric system definition




In conclusion, 1 tonne is exactly equal to 1000 kilograms (Option 3). Knowing this conversion is fundamental for students in physics, chemistry, and engineering subjects, as well as practical applications in everyday life.

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