Advertisements
Advertisements
Question
Brass is an alloy of:
(a) Cu and Sn
(b) Cu and Pb
(c) Pb and Sn
(d) Zn and Cu
Advertisements
Solution
(d) Zn and Cu
Brass is an alloy of copper and zinc. It comprises of 80 percent copper and 20 percent zinc.
APPEARS IN
RELATED QUESTIONS
Give two examples of alloys with their chemical composition.
Tinning : Tin : : Galvanizing : _________
Explain how painting of an iron gate prevents it from rusting.
What special name is given to their corrosion of iron?
Fill in the following blank with suitable word:
The process of depositing a thin layer of zinc on iron articles is called .............
Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken.
Name the metal which is a constituent of plant pigment?
What are the adverse effects of corrosion?
Answer the following question:
What is corrosion? Do gold ornaments corrode? Justify.
State whether the statement given below is true or false. If false write the correct statement.
Either oxygen or moisture is essential for rusting.
Write a short note on Alloying.
Corrosion of silver causes a black layer of _______.
When one of the metals in an alloy is mercury the alloy is called _______.
Find the odd one out and give its explanation.
Find the odd one out and give its explanation.
Give scientific reasons.
Silver amalgam is used for filling dental cavities.
In ______ process a layer of molten tin is deposited on metals.
Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
