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Question
What is an alloy?
Solution
The homogeneous mixture formed by mixing a metal with other metals or nonmetals in certain proportion is called an alloy.
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Give an example of a metal which can be easily cut with a knife.
You are given a hammer, a battery, a bulb, wires and a switch.
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Fill in the blanks:
Phosphorus is a very _________ non-metal.
Match the substances given in Column A with their uses given in Column B.
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| 1 | Gold | a | Thermometers |
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State one use of Hydrogen.
State one use of Nitrogen.
State one use of Sulphur.
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(d) a solution
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Impure diamond is used to cut glass
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Chlorine gas is used in the manufacture of sulphuric acid.
Match the statements in Column A, with those in Column B .
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Name:
a metal with low melting and boiling points
Name:
a non-metal with high m.p & b.p
Name:
a metal which can be cut with a knife.
`Mg -— → Mg^(2+)`
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a non metal which is lustrous
Name:
a metal whose oxide is reduced only by carbon
Explain the term Minerals.
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Give the common name and chemical name of an ore of:
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The element placed in the extreme left of the Modern Periodic Table.
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Nonmetal which is a good conductors of electricity.
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