Chemistry
Name the alloy used for the following purposes.
(a) Making electric circuits
(b) Making medals
(c) Making parts of watches
(d) Surgical instruments
(e) Aircraft
Metallurgy
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Answer
(a) Making electric circuits — Brass
(b) Making medals — Bronze
(c) Making parts of watches — Brass
(d) Surgical instruments — Stainless steel
(e) Aircraft — Duralumin
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Related Questions
Name the constituents of:
(a) Duralumin
(b) Solder
(c) Bronze
(d) Brass
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(a) A metal which is liquid at room temperature.
(b) A metal which is always present in the amalgam.
(c) The process of heating an ore to a high temperature in the presence of air.
(d) The compound formed by the reaction between calcium oxide and silica.
(e) A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium
(f) Name an allotrope of a non-metal that allows electricity to pass through it.
Using the information in the table below, complete the following :
(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.
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