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प्रश्न
Give two tests of the following:
NH3
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उत्तर
NH3 : It has a strong pungent smell and turns moist red litmus blue. It can also be tested by bringing a glass rod dipped in conc. HCl in contact with the gas, if the gas is ammonia then it will produce dense white fumes near the glass rod.
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संबंधित प्रश्न
Correct the following, if required:
Constant boiling nitric acid contains 80% nitric acid by weight.
Name a nitrate which on heating leaves no residue behind.
From the following list of substances, choose one substance in each case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A nitrate which gives off oxygen and nitrogen dioxide when heated.
Fill in the blank :
Magnesium gives ------------(O2, H2, NO) with very dilute nitric acid.
Fill in the blank:
------------ (iron / copper) become passive in concentrated nitric acid
State one observation for the following:
Concentrated nitric acid is reacted with sulphur.
How does nitric acid formed in the atmosphere?
Mention three important uses of nitric acid. Give the properties of the nitric acid involved in its use.
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.
Calcium nitrate [ small amount __________ in excess __________ ]
Give a balanced equation for the following:
Oxidation of carbon with conc. nitric acid.
