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By red heating and slowly cooling of iro...

By red heating and slowly cooling of iron it becomes -

A

Hard and brittle

B

Soft and inflexible

C

Hard on surface but soft from inside

D

Resistant of chemical reaction

Text Solution

Verified by Experts

The correct Answer is:
B
On red-heating and cooling slowly then iron becomes soft and ductile .
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AGRAWAL EXAM CART BIHAR-METALS AND NON-METALS-IMPORTANT QUESTIONS
  1. By red heating and slowly cooling of iron it becomes -

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  2. Choose the incorrect information about metals:

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  3. Which of the following metals is not solid at room temperature ?

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  4. Which of the following has highest tensile strength ?

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  5. Most malleable metal is:

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  6. Metals are usually hard. But exception to this fact is:

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  7. The metal with exceptionally low melting point is:

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  8. The most reactive element among the following is:

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  9. Which of the following metals is suggested to be stored submerged in k...

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  10. Which metal is suitable to store acid in its vessel?

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  11. Potassium metal should be stored in:

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  12. Magnesium reacts with oxygen to give:

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  13. Which of the following reacts vigorously with water?

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  14. Which of the following metals does not react with water at all?

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  15. What would be the product of following reaction? underset("(Gold)")...

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  16. In a reaction, copper can displace:

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  17. Which of the following burns with an explosion in contact with water a...

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  18. Complete the following equation: Zn + CuSO4 to ………. + Cu

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  19. A non-metal having lusture is:

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  20. The good conductor of electricity is:

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  21. Which of the following elements isametalloid?

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