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प्रश्न
Mention two uses of the following metals and non-metals
Oxygen
उत्तर
It is used by all living beings for breathing.
It is important for combustion.
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संबंधित प्रश्न
State five uses of metals
State one use of Silver.
For the reduction of metal oxide, suggest a reducing agent other than carbon.
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank
_______ is a soft metal.
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
Write ‘True’ or ‘False’ in front of following statement.
Brass is an alloy of copper and zinc and has lustrous yellow colour.
Name a metal which is not malleable :
State two important uses of following metal
Uses of zinc
Write scientific reason.
Generally the ionic compounds have high melting points.
What was Mendeleev's basis for the classification of elements?
With reference to the following metals state their use in daily life metal:
Zinc
Soft metal : Na : : hard metal : _______
The metal which is liquid at room temperature is ______.
Compare the properties of metals and nonmetals. Give three examples for each.
What is ductility?
The most abundant metal in the earth’s crust is ____________.
All gases are ______.
Sodium is a hard metal.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
