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प्रश्न
______ is not made of matter.
विकल्प
Gold ring
Iron nail
Light ray
Oil drop
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उत्तर
Light ray is not made of matter.
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संबंधित प्रश्न
What are molecules ?
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
Name the different types of solutions. Give one example of each.
When the solid A is added to water, it dissolves with the evolution of a lot of heat and making little explosions to form two products B and C. The properties of products B and C are entirely different from those of solid A as well as water. Moreover, products B and C cannot be reconverted into solid A and water. When another solid D is added to water, it dissolves with the absorption of a little heat to form a product E which cools down. The product E shows the properties of both, solid D as well as water. Moreover, product E can be converted into solid D and water.
(a) What type of change occurs when solid A is dissolved in water ? Why ?
(b) What type of change occurs when solid D is dissolved in water ? Why ?
(c) Name a metal which you think could behave like solid A. Also name the products B and C.
(d) Name the solid D if it is the one which is used in making ordinary dry cells.
(e) Name the process by which D can be recovered from E.
Name the process you would use to separate a mixture of water and alcohol.
Fill in the following blanks with suitable words :
Miscible liquids are separated by .....................
How will you separate a mixture of iron filings and powdered carbon ?
How will you separate iron pins from sand ?
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
The property which allows the metals to be hammered into their sheets is ______.
