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प्रश्न
The chemical used in the brown ring test is ______.
विकल्प
CuSO4
FeSO4
Fe2(SO4)3
ZnSO4
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उत्तर
The chemical used in the brown ring test is FeSO4.
Explanation:
In the brown ring test for nitrates, ferrous sulphate (FeSO4) reacts with concentrated sulphuric acid (H2SO4) and nitrate ions to form a brown ring due to the formation of the Fe(NO)2+ (nitroso iron complex).
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संबंधित प्रश्न
How will you prepare the following from nitric acid?
Aqua regia
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
Write the equations involved in Ostwald process.
Describe the Ostwald's process for the manufacture of nitric acid with labeled diagram.
Give reason for the following:
Aqua regia dissolves gold and platinum.
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Fill in the blank with appropriate word/words.
Ammonal is a mixture of ________ and __________
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
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 |
Identify the gas evolved when sulphur is treated with concentrated nitric acid.
