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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
Name one non-metal which is stored under water.
Name two metals which are used for making domestic utensils and factory equipment.
Name two physical properties of carbon in which it's behaviour is not as expected from it's classification as non-metal.
Name a metal which is so soft that it can be cut with a knife.
Name a non-metal that a good conductor of heat and electricity
State the composition and two uses of given alloy:
Brass
Identify the odd term.
Differentiate between metals and non-metals with reference to –
(a) number of electrons in outer or valence shell
(b) formation of cation and anion
(c) reaction with dilute acids.
Which non-metal is essential for our life and all living beings inhale it during breathing?
Reason out
Mercury is the only metal that is liquid at room temperature.
