Question

Name the type of chemical reactions taking place when:
(1) Lime stone is heated
(ii) Magnesium ribbon is burnt in air
(iii) Iron nails are dipped in copper sulphate solution.
(iv) Burning of coal.
(V) Sodium sulphate is mixed with barium chloride.

Answer 1

Answer:

Limestone heated -CaCO3

CO2 is given out (decomposition )

Magnesium Burning-White sparks(Mg+O2)

Combination

Iron nails(displacement)

Burning coal-Exothermic

Sodium sulphate and BaCl2-Precipitation reaction.