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प्रश्न
Name a non-metal which is a good conductor of electricity.
Write one example of a non-metal that is a good conductor of electricity.
Name the following:
Non-metal which is a conductor of electricity.
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उत्तर
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संबंधित प्रश्न
Solids have definite shape and definite volume.
Liquids have definite shape and definite volume.
Fill in the blank :
The state of matter with definite volume and definite shape is called______
What is the scientific name of particles which make up mater?
What are the characteristics of matter?
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?
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Fill in the following blanks with suitable words :
Brass is an alloy which is considered a ..............
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
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
Which of the following does not have a fixed melting point/boiling point ?
Choose the correct answer.
A 5 per cent sugar solution means that :
Choose the correct answer.
A 15% alcohol solution means :
What is the difference between solutions and colloids ?
Define Foam Give one example.
One of the following does not show Tyndall effect. This one is :
How will you separate a mixture of iron filings and powdered carbon ?
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
Why wires cannot be drawn from materials such as stone or wood?
Gases do not diffuse very easily.
