Advertisements
Advertisements
Question
Mention two uses of the following metals and non-metals
Gold
Solution
It is used for making ornaments and coins.
It is used in the manufacture of electronic devices like computers, telephones, home appliances, etc.
APPEARS IN
RELATED QUESTIONS
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
The atomic number of an element Y is 16.
(a) What must an atom of Y do to achieve the nearest inert gas electron arrangement?
(b) Which inert gas is nearest to Y?
What is an amalgam?
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
What is an alloy? Give two examples of alloys.
Give reasons
Magnesium is used in fire works.
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
A metal with melting point less than 50°C is
A metal which is neither ductile nor malleable is
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.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Soft metal : Na : : hard metal : _______
Match the columns.
Group A | Group B |
1) Copper and Zinc | a) Brass |
2) Copper and Tin | b) Bronze |
c) Stainless steel |
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
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.
Can you store pickle in an aluminium utensil? Give reason.
Name two soft metals which can be cut with a knife.
Which of the following metals can displace the other two metals from their salt solutions?
Zinc | iron | copper |