(Test Paper) CBSE Class X Self Evaluation Tests For Science : Metals & Non Metals
Submitted by guru on Sat, 01/10/2009 - 12:10
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Test Paper : CBSE Class X Self Evaluation Tests For Science : Metals & Non Metals
1. Name some strategic metals.
2. Some copper sulphate solution is placed in Iron pot.
After some time , it starts showing holes. Why?
3. What is alumino-thermite reaction? For what purpose
it may be used.
4. With the help of labelled diagram explain the electrolytic
refining of copper.
5. What is ionic bonding? Explain the formation of
sodium chloride by showing transfer of electrons.
6. Differentiate between:
(i) Roasting and calcination
(ii) Electrolytic reduction and refining
7. What are alloys? Write the composition of alloy duralium
and bronze?
8. What is corrosion? How can corrosion be prevented?
9. How can sodium be extracted from sodium chloride? Explain.
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