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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
The inter-molecular space is maximum in
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Give one difference between atoms and molecules.
What is the scientific name of particles which make up mater?
What is meant by saying that metals are lustrous ?
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Name a non-metal :
- which is lustrous
- which is required for combustion
- whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope.
- other than carbon which shows allotropy
- which is known to form the largest number of compounds
Name a metal which forms amalgams.
Name a metal which has a low melting point.
Which one of the following is not a metalloid ?
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Define Sol and give one example.
Define the emulsion. Give one example.
How will you separate a mixture of iron filings, chalk powder and common salt ?
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
Liquids cannot be compressed and they have fixed volume.
Gases do not diffuse very easily.
Give an example of a molecule.
