Advertisements
Advertisements
Question
Give two uses of bronze.
Solution
Two uses of bronze are:
(i) It is used in the manufacturing of statues, medals etc.
(ii) It is used to make cooking vessels and propellers of ship.
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
(a) oxide
(b) hydride
(c) sulphide
(d) carbonate
When an object made of metal A is kept in air for a considerable time, it loses its shine and becomes almost black due to the formation of a layer of substance B. When an object made of another metal C is kept in damp air for a considerable time, it gets covered with a green layer of substance D. Metal A is the best conductor of electricity whereas metal C is the next best conductor of electricity.
(a) What is metal A?
(b) What is metal C?
(c) Name the substance B.
(d) Name the substance D.
Give reasons, why aluminum is used in:
making alloys
Name the following:
The process in which an ore is heated in air so that oxygen gets added to it to form the oxides.
Define the term : Gangue
The following questions relate to the extraction of aluminium by electrolysis.
Explain why it is necessary to renew the anode periodically.
Name the process used for the enrichment of sulphide ore.
Find the odd one out and give its explanation.
Explain the difference between Bayer’s process and Hall’s process by explaining the Bayer’s process.
