The reactions in which compound breaks up into elements or simpler compounds is known as

Choose the method of preparation of Iron (III) chloride, from the methods given in the list:

[List: A. Neutralization B.Precipitation C.Direct combination D.Substitution]

Complete the following table which refers to the conversion of ions to neutral particles.

State one relevant observation for of the following:

Barium chloride solution is slowly added to sodium sulphate solution.

Name the gas that is produced in the following case:

Action of dilute hydrochloric acid on sodium sulphide.

Give a chemical test to distinguish between the following pair of chemicals: Lead nitrate solution and Zinc nitrate solution.

Distinguish between the following pair of compounds using a reagent as a chemical test:

• Calcium nitrate and zinc nitrate solution.

Write a balanced chemical equation for the following:

• Reaction of lead nitrate solution with ammonium hydroxide.

$\mathrm{Fe}+{\mathrm{CuSO}}_4\to {\mathrm{FeSO}}_4 +$ _____

The reaction between copper sulphate solution and an iron nail is an example of _____ reaction.

$2\mathrm{Na}+$ _____ $\to 2\mathrm{NaCl}+{\mathrm{H}}_2$

($2\mathrm{HCl}$/$3\mathrm{HCl}$/$2{\mathrm{Cl}}_2$)