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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
What elements are present in steel? How are the properties of steel different from those of pure iron?
How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?
Mention two uses of the following metals and non-metals
Gold
Give reasons
Aluminium is used in making aircrafts.
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
Salt of silver, such as ________ is used for making photographic films.
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
State two important uses of following metal:
Uses of gold
State the position of the following in the periodic table:
Alkali metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Write name.
The device used for grinding an ore.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X
What is it made from? Why?
Electric cables
Give a reason why a green deposit is seen on the surface of an article of copper
Aluminium: _______: gold : : electric insulator
Which of the following metals can displace the other two metals from their salt solutions?
| Zinc | iron | copper |
Which metal has the highest ductility?
Which metals are liquid at room temperature?
