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प्रश्न
Name the following:
Two metals which occur in nature in free state as well as in combined state.
उत्तर
platinum and gold
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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
State the main components of the following alloys:
Bronze
State two conditions necessary for rusting of iron ?
How does aluminum react with the Acid ?
Name the following:
The rocky impurities present in an ore.
Give reason for the following:
Galvanized metal ions should not be used for storing food.
Give two properties of alloys which are different from constituent metals.
Name the alloy of zinc used in simple voltaic cells.
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.
Brass is an alloy of ______.
