Chemistry
The metals zinc and tin are present in the alloy :
- Solder
- Brass
- Bronze
- Duralumin.
Metallurgy
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Answer
Bronze
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Related Questions
The following questions are relevant to the extraction of Aluminium :
(i) State the reason for addition of caustic alkali to bauxite ore during purification of bauxite.
(ii) Give a balanced chemical equation for the above reaction.
(iii) Along with cryolite and alumina, another substance is added to the electrolyte mixture. Name the substance and give one reason for the addition.
Using the information below about X and Y – complete the following questions :
X-2,8,7 Y-2,8,2 Dissolves in water and turns blue litmus red Very low solubility in water. Dissolves in HCl Tends to oxidise elements and compounds Tends to act as a reducing agent Poor electrical and thermal conductivity Good electrical and thermal conductivity No tendency to form alloys Forms alloys (i) …………… is the metallic element.
(ii) Metal atoms tend to have a maximum of …………… electrons in the outermost energy level.
(iii) Non-metallic elements tend to form …………… oxides while metals tend to form …………… oxides.
(iv) Non-metallic elements tend to be …………… conductors of heat and electricity.
(v) Metals tend to …………… electrons and act as …………… agents in their reactions with elements and compounds.
The amphoteric metallic oxide is :
- Calcium oxide
- Barium oxide
- Zinc oxide
- Copper (II) oxide
The following questions relate to the extraction of aluminium by electrolysis :
(i) Name the other aluminium containing compound added to alumina and state it's significance.
(ii) Give the equation for the reaction that takes place at the cathode.
(iii) Explain why is it necessary to renew the anode periodically.