Chemistry
Name:
(a) two coloured metal ions.
(b) a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
(c) two bases which are not alkalis but dissolve in strong alkalis.
(d) a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
(e) a colourless cation not a representative element.
(f) a yellow monoxide that dissolves in hot and concentrated caustic alkali.
(g) a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
(h) a compound containing zinc in the anion.
Related Questions
Fill in the blanks sentence case:
(a) …………… (AgCl/PbCl2) is a white precipitate soluble in excess of NH4OH.
(b) Addition of sodium hydroxide solution to ferrous sulphate solution produces a …………… (green/reddish brown) precipitate which is …………… (soluble/insoluble) in excess of NaOH solution.
(c) Ammonium chloride and sodium chloride can be distinguished by heating them with an …………… (acid/alkali).
(d) Element …………… (Fe/Zn/Cu) produces hydrogen by reacting with both acid as well as alkali.
Match the following:
Sodium hydroxide / Ammonium hydroxide solution is added to the solutions containing the ions mentioned in column 1. Match them to the colours of their precipitates in column 2.
Column 1 Column 2 (a) Pb2+ (i) Blue ppt. (b) Fe2+ (ii) Reddish brown ppt. (c) Zn2+ (iii) Dirty green ppt. (d) Fe3+ (iv) Gelatinous white ppt. soluble in excess NaOH (e) Cu2+ (v) White ppt. soluble in excess NH4OH Write the probable colour of the following salts?
(a) Ferrous salts
(b) Ammonium salts
(c) Cupric salts
(d) Calcium salts
(e) Aluminium salts
Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write the equation for the same.