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प्रश्न
The smallest unit of matter that exists freely in nature is called ...........
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उत्तर
The smallest unit of matter that exists freely in nature is called molecule.
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संबंधित प्रश्न
What are the characteristics of matter?
What is the other name for impure substances ? Give two examples of impure substances.
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
What is the most common way of expressing the concentration of a solution ?
What is a suspension ? Give two examples of suspensions.
How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
Wipe the board with a duster and then tap the duster against the table. What do you see?
______ is not made of matter.
The fluidity of solids: ______.
