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Why is dihydrogen used in welding of hig...

Why is dihydrogen used in welding of high melting metals ?

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-HYDROGEN AND ITS COMPOUNDS-IMPORTANT QUESTIONS
  1. Why is dihydrogen used in welding of high melting metals ?

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  2. Explain the term "SYNGAS".

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  3. What is meant by coal gasification? Explain with relevant, balanced eq...

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  4. What do you mean by autoprotolysis? Give the equation to represent the...

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  5. Water behaves as an amphoteric substance in the Bronsted sense. How do...

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  6. The boiling points of NH(3) , H(2)O and HF are higher than those of th...

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  7. What happens when dihydrogen reacts with a) Chlorine and b) Sodium met...

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  8. What is water - gas shift reaction? How can the production of didydrog...

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  9. Complete and balance the following reactions : (i) H(2)(g) + M(6)O(3...

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  10. Complete and balance the following reactions : (ii) CO(g) + H(2)(g) ...

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  11. Complete and balance the following reactions : (iii) C(3)H(8)(g) + 3...

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  12. Complete and balance the following reactions : (iv) Zn(s) + NaOH(aq)...

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  13. Discuss the principle and the method of softening of hard water by syn...

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  14. Write a few lines on the utility of hydrogen as a fuel.

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  15. Mention any three uses of H(2)O(2) in modern times.

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  16. Write an essay on the commericial preparation of dihydrogen. Give bala...

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  17. Explain, with suitable examples, the following: (i) Electron-deficie...

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  18. Explain any four of the chemical properties of water.

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  19. Explain the terms hard water and soft water. Write a note on the (i)...

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  20. Write the chemical reaction to justify that hydrogen peroxide can func...

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