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प्रश्न
What is an amalgam? Name one metal which does not form amalgam? State one use of amalgam.
उत्तर
Amalgam:
A mixture or an alloy of mercury with a number of metals or non-metals is known as amalgams. An amalgam may be liquid such as Na/Hg or a solid like Zn/Hg.
Iron does not form amalgam.
Dental amalgam which is a mixture of mercury with a silver tin alloy is used for dental fillings.
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संबंधित प्रश्न
Choose the correct answer from the options given below:
Aluminum powder is used in thermite welding because
A. It is a strong reducing agent
B. It is a strong oxidizing agent
C. It is corrosion resistant
D. It is a good conductor of heat
How is the main ore of aluminium concentrated?
Name the following:
The kind of welding in which aluminium powder is used.
Comment on the statement that- "All ores are minerals but all minerals are not ores".
Write the name and formula of two ores of the following: Zinc
Explain the following:
Aluminium is extensively used for making aircraft parts.
Give the name and formula of an ore of zinc.
What in addition to a zinc compound, is put into the furnace? State one large scale use of zinc.
What is an alloy? An alloy usually has some property which makes it useful in a specific way.
What is the special property of : type metal?
Write the chemical formulae of the main ore of aluminium.
Answer the following question :
Write the constituents of electrolyte for the extraction of aluminum.
