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प्रश्न
State one observation for the following:
Concentrated nitric acid is reacted with sulphur.
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उत्तर
Concentrated nitric acid is a strong oxidising agent that converts sulphur to sulphuric acid, along with water and nitrogen dioxide.
\[\ce{S + 6HNO3 -> H2SO4 + 2H2O + 6NO2}\]
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संबंधित प्रश्न
Correct the following, if required:
HNO3 is a strong reducing agent.
Correct the following, if required:
Constant boiling nitric acid contains 80% nitric acid by weight.
Name a nitrate of metal which on heating does not give nitrogen dioxide.
Name a nitrate which on heating leaves no residue behind.
Fill in the blank:
Aqua regia is a mixture of 3 parts ------------ and one part ------------.
Fill in the blank:
The catalytic oxidation of ammonia to nitric oxide is ------------. (exothermic / endothermic)
process.
What is meant by the following term?
Aqua regia
Give two tests of the following:
NH3
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Calcium nitrate [ small amount __________ in excess __________ ]
State the effect of adding a small amount of : (a) sodium hydroxide (b) ammonium hydroxide followed by an excess in case to samples of the salt solutions.
Zinc nitrate [ small amount ________ in excess ________]
