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प्रश्न
Name the following:
A chemical in which gold can be dissolved.
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उत्तर
Gold can be dissolved in aqua regia which is mixture of three parts of conoentrated hydrochloric acid and one part of concentrated nitric acid.
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संबंधित प्रश्न
Write a balanced equation for the action of dilute hydrochloric acid on sodium sulphide.
Write an equation for the reaction of hydrochloric acid on caustic soda solution.
Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.
Name the following:
A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
Fill in the blank:
On addition of silver nitrate to hydrochloric acid ___________ precipitate is formed which is soluble in ____________
Write balanced equation for the following reaction:
Copper oxide and dilute hydrochloric acid.
Identify the anion present of the following compound:
When barium chloride solution is added to salt solution E a white precipitate insoluble in dilute hydrochloric acid is obtained
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 the balanced equation for the reaction of dilute hydrochloric acid with the following:
Magnesium sulphite
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
