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प्रश्न
Name the following:
The ore of zinc containing its sulphide.
उत्तर
Zinc blende (sphalerite)
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संबंधित प्रश्न
Explain
A neutral gas other than oxygen which is formed at the anode during electrolysis of fused alumina
Name the following:
The rocky impurities present in an ore.
Give reason for the following:
A neutral gas other than oxygen is formed at the anode during electrolysis of fused alumina.
Explain the following:
Cold water has no action on aluminium.
List 1 contains the meta ls I alloys (1, 2, 3, 4, 5 ) and list 2 contains their uses (A, B, C, D, E).
| List 1 Metal/Alloy |
List 2 Uses |
| 1. Aluminium | A. Steel making |
| 2. Lead | B. aeroplane wings |
| 3. Brass | C. galvanizing |
| 4. Iron | D. radiation shield |
| 5. Zinc | E. electricaI fittings |
Copy and complete the following table, write down the correct letter against the numbers representing metals. An answer may be used only once. The first has been done for you.
| Metal | 1 | 2 | 3 | 4 | 5 |
| Use | B |
Write the equation for the reaction of zinc with following: Sodium hydroxide solution
Name the following.
The property possessed by metals by which they can be beaten into sheets.
Aluminium powder is used in thermite welding because
The two main metals in bronze are
What is the role of flux in metallurgical processes?
