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प्रश्न
Give reason for the following:
Conc. Nitric acid renders iron passive.
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उत्तर
Concentrated nitric acid renders iron passive because of the formation of extremely thin, unreactive, protective layer of insoluble metallic oxide on the surface which stops further reaction.
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संबंधित प्रश्न
Explain the following:
An all-glass apparatus is used in the laboratory preparation of nitric acid.
Ammonia is used in the Ostwald process.
Why is quartz used in this process?
How will you prepare the following from nitric acid?
copper nitrate
How will you prepare the following from nitric acid?
Lead nitrate
What is meant by the following term?
Fuming nitric acid
Give reason for the following:
Aluminum does not react with nitric acid of any concentration.
What do you observe when?
Scrap zinc is heated with conc. HNO3?
Dilute nitric acid is generally considered a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
Explain, why only all glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.
| Name of process | Inputs | Catalyst | Equation for catalysed reaction | Output |
| Haber process | Hydrogen + | |||
|
Ammonia + |
Nitric acid |
