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When ice melts ,its temparature...

When ice melts ,its temparature

A

Remains constant

B

Increases

C

Decreases

D

can not say

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
  1. What metals can we get form the ores ?

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  2. Can you arrange these metals in the order of their reactivity?

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  3. When ice melts ,its temparature

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  4. Can you think how do we get these metals from their ores?

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  5. Does the reactivity of a metal and form of its ore(oxides, sulphides, ...

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  6. How are metals extracted from mineral ores?

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  7. Do you know why corrosion occurs?

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  8. What does this tell us about the conditions under which iron articles ...

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  9. What is the role of furnace in metallurgy?

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  10. How do furnaces bear large amounts of heat?

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  11. Do all furnaces have same structure?

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  12. Draw a neatly labelled diagram of a neuron.

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  13. Arrange the metals: Fe, Na, Ag and Zn in Increasing order of their che...

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  14. What are the preventive methods do you take for rusting iron materials...

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  15. What is the difference between roasting and calcination? Give one exam...

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  16. What are the essential condition that iron articles get rust ?

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  17. Write an activity about how you conduct an experiment to show that mor...

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  18. Predict, what happens in the field of domestic use of metals if alloys...

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  19. Give an example with the chemical equation for the reduction of ores u...

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  20. Write two precautions to prevent corrosion of metals in your daily lif...

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