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प्रश्न
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
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उत्तर
Commercial nitric acid is yellow in colour because of presence of nitrogen dioxide but when it is diluted with water, it turns colourless because nitrogen dioxide get dissolved in water.
संबंधित प्रश्न
Ammonia is used in the Ostwald process.
Why is quartz used in this process?
Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test?
Choose the correct answer from the option given below :
When treated with nitric acid which of the following liberate hydrogen?
Fill in the blank with appropriate word/words.
Aqua regia is a mixture of _______ and________
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
The first step in the manufacture of nitric acid is the catalytic oxidation of ammonia. What is the name of the catalyst?
What is the special feature of the apparatus that is used in the laboratory preparation of nitric acid?
What would you observe in the following case:
Copper is heated with concentrated nitric acid in a hard glass test tube.
Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
Explain why nitric acid is kept in a reagent bottle for a long time.
