HARD
10th ICSE
IMPORTANT
Earn 100
On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves with the addition of an excess of ammonia solution. Identify what is the formula of the white gelatinous precipitate obtained? (choose from Na, AI, Zn, Pb, Fe).
Important Questions on Analytical Chemistry : Uses of Ammonium Hydroxide and Sodium Hydroxide
MEDIUM
10th ICSE
IMPORTANT
Name a yellow monoxide that dissolves in hot and concentrated caustic alkali.
MEDIUM
10th ICSE
IMPORTANT
Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
MEDIUM
10th ICSE
IMPORTANT
Name a compound containing zinc in the anion.
EASY
10th ICSE
IMPORTANT
The colour of an aqueous solution of copper sulphate is:
MEDIUM
10th ICSE
IMPORTANT
The colour of the precipitate formed on adding sodium hydroxide solution to iron (II) sulphate solution is
MEDIUM
10th ICSE
IMPORTANT
A metal that produces hydrogen on reacting with alkali as well as with acid.
MEDIUM
10th ICSE
IMPORTANT
The salt solution which does not react with ammonium hydroxide is
MEDIUM
10th ICSE
IMPORTANT
What do you observe when freshly precipitated aluminium hydroxide reacts with caustic soda solution? Give a balanced equation.
