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प्रश्न
Select the appropriate option for the following statement:
The element which is a noble metal.
पर्याय
Boron
Chlorine
Potassium
Platinum
Radon
उत्तर
Platinuma.
APPEARS IN
संबंधित प्रश्न
Explain the meaning of malleable.
Match the substances given in Column A with their uses given in Column B.
| A | B | ||
| 1 | Gold | a | Thermometers |
| 2 | Iron | b | Electric wire |
| 3 | Aluminium | c | Wrapping food |
| 4 | Carbon | d | Jewellery |
| 5 | Copper | e | Machinery |
| 6 | Mercury | f | Fuel |
Name the non-metal which is used to convert vegetable oil into vegetable ghee (solid fat).
Name one property which is characteristic of non-metals.
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Which of the following metal exists in the liquid state?
(a) Na
(b) Ag
(c) Cr
(d) Hg
Name a metal as precious as gold
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Give reasons
Copper is used in making electric cables.
Give reasons
Tungsten is used in electric bulbs.
Name the metals present in the following alloys
Duralumin
Name a non-metal which is good conductor of electricity.
Name:
a metal which is a bad conductor of heat and electricity
Name two metals which react with cold water.
Explain the term Gangue .
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which has low tensile strength
With reference to the physical properties of metals and non-metals, state the following exception.
A metal which floats on water.
Tabulate the differences between metals and non-metals.
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
Compounds obtained from non–living sources are called ______.
