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प्रश्न
Write name.
The nonmetal having electrical conductivity.
उत्तर
Graphite an allotrope of carbon is a good conductor of electricity.
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संबंधित प्रश्न
State one use of Aluminium.
Mention two uses of the following metals and non-metals
Aluminium
Give reasons
Aluminium is used in making aircrafts.
Give reasons
Graphite is used in the leads of pencils
A metal with melting point less than 50°C is
State the position of the following in the periodic table:
Aluminium
Write scientific reason.
Pine oil is used in froth flotation.
What is it made from? Why?
Electric cables
What is it made from? Why?
Pots and pans
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.
Compare the properties of metals and nonmetals. Give three examples for each.
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
Why are bells made of metals?
Which of the following is not a metal?
A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
The typical shine of metals is called ______.
Metals are ______ conductors of heat and electricity.
Why do metals appear shiny?
