Excess of sodium hydroxide is added to aqueous solution of salt X and boiled. Ammonia gas is given off after aluminium foil is added to hot solution. What could X be?

An excess of dilute sulfuric acid reacts with both aqueous barium hydroxide and aqueous barium chloride. In what way are the 2 reactions the same?

X, an acid, was added to a solution of the nitrate of metal Y. A dense white precipitate was formed. What are X and Y?

Pale green solution X gives green ppt with excess aqueous sodium hydroxide. Alkaline gas is given off when the mixture is warmed with powdered aluminum. What does X contain?

In separate experiment,excess of aqueous sodium hydroxide or aqueous ammonia was added to solution X.In both experiments,ppt was obtained which dissolve in excess of added reagent.

2 aqueous solutions, X and Y, are mixed together. Which one of the following pairs would not give a white precipitate?

Excess ammonia solution is added to an aqueous solution which contains calcium and copper (II) ions. Which of the following is a correct observation?

Add dilute nitric acid followed by aqueous silver nitrate to Z; white ppt is formed. Add sodium hydroxide solution in excess to Z; white ppt that is insoluble is formed. What is Z?

Which one of the following would not give a visible reaction with dilute hydrochloric acid?

Hydrogen gas reacts with nitrogen under high pressure and temperature in Haber Process to give?

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