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प्रश्न
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
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उत्तर
Among the given options, air is a mixture as it is composed of different gases.
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संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Gases have definite volume but no definite shape.
Name the terms for the change of vapour into a liquid.
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
What are the characteristics of matter?
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.
Name a metal which is soft and a non-metal which is hard.
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
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Explain the meaning of the term matter with special reference to the term ‘substance’.
What's the solution?
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Which among the following is not a matter?
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