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प्रश्न
Define non-metals. Give five examples of non-metals.
उत्तर
Non-metals are elements that do not show metallic characteristics, such as conductivity of electricity and heat, malleability and ductility.They are non-lustrous, generally soft and non-sonorous. Hydrogen, nitrogen, oxygen, carbon and silicon are five examples of non-metals.
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संबंधित प्रश्न
Classify the following elements into metals, non–metals and metalloids: C, Mg, Si, S, Hg, As.
Name one metal which has a low melting point.
Name a non-metal having lustre (shining surface).
Name a metal that is brittle
Name a metal as precious as gold
Statements given below are incorrect. Write the correct statements :
Chlorine gas is used in the manufacture of sulphuric acid.
Write ‘True’ or ‘False’ in front of following statement.
Stainless steel is used for making power transmission wires.
Tick (√) the most appropriate answer.
A metal which is a poor conductor of electricity is:
Name a metal which can be cut with a knife :
Name:
a metal with low melting and boiling points
