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प्रश्न
State the use of aqua-regia.
उत्तर
It is used to dissolve noble metals like gold and platinum.
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संबंधित प्रश्न
State one relevant observation for given reactions:
Action of dilute Hydrochloric acid on iron (II) sulfide.
State one relevant observation for the following
When hydrogen sulfide gas is passed through lead acetate solution.
Write an equation for the reaction of hydrochloric acid on magnesium foil.
Write an equation for the reaction of hydrochloric acid on zinc carbonate.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
Name the following:
Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celcius.
Fill in the blank:
On addition of silver nitrate to hydrochloric acid ___________ precipitate is formed which is soluble in ____________
How will you identify?
An amphoteric hydroxide
Identify the salts P and Q from the observation given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When NH4OH soltion is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
