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प्रश्न
Gases have definite volume but no definite shape.
विकल्प
True
False
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उत्तर
False.
Correct Gases have neither definite volume nor a definite shape.
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संबंधित प्रश्न
The best evidence for the existence and movement of particles in liquids was provided by :
An inflated balloon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the balloon is airtight. And after a week all the air has escaped from the balloon. Explain how the air particles got out of the balloon.
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
Which of the following represents the solubility of sugar in water at 20°C ?
Name the source from which nitrogen and oxygen are obtained on a large scale.
How will you separate iron pins from sand ?
Gases change to liquid by the process of ______.
