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प्रश्न
What is an alloy? How is an alloy made?
उत्तर
An alloy is a uniform combination of two or more metals or a metal with a non-metal. It is produced by mixing metals in their molten state in desired quantities. The mixture is then cooled at room temperature. Similarly, an alloy of a metal and a non-metal is prepared by dissolving the non-metal in the molten metal. The mixture is then cooled at room temperature
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संबंधित प्रश्न
Mention two uses of the following metals and non-metals
Gold
Mention two uses of the following metals and non-metals
Oxygen
Give reasons
Magnesium is used in fire works.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
State two important uses of following metal:
Uses of gold
Write scientific reason.
Sodium is always kept in kerosene.
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
What is it made from? Why?
Pots and pans
Name the following:
A metal used in flexible pipes.
Metals are ______ conductors of heat and electricity.
