Chemistry
Assertion (A): Oxides of most of the metals are basic in nature.
Reason (R): All metal oxides dissolve in water forming alkalis.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Related Questions
Assertion (A): Iron (II) salt solution when reacted with ammonium hydroxide forms a dirty green precipitate.
Reason (R): Iron salts are brown in colour.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Hydrogen gas is liberated when metals like Zn, Al, Pb react with caustic alkalies.
Reason (R): Alkalies are soluble in water.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Zinc oxide reacts with acids as well as bases to form salt and water.
Reason (R): Zinc oxide is amphoteric in nature.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
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.