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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:
Nitric acid remains colourless even when exposed to light.
Name a nitrate of metal which on heating does not give nitrogen dioxide.
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 only oxygen when heated
Fill in the blank:
Aqua regia is a mixture of 3 parts ------------ and one part ------------.
Fill in the blank :
Magnesium gives ------------(O2, H2, NO) with very dilute nitric acid.
State one observation for the following:
Concentrated nitric acid is reacted with sulphur.
How does nitric acid formed in the atmosphere?
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 __________ ]
Differentiate between the following pair based on the criteria given:
Sulphuric acid and Nitric acid (using barium chloride solution)
