Give two examples each of the following oxides -

(a) Acidic oxides

(b) Basic oxides

(c) Amphoteric oxides

(d) Neutral oxides.

State which of the following oxides i.e. (a) to (d) -

(i) React with water to give a base

(ii) React with a base to give salt & water

(iii) React with acids & bases to give salt & water.

Give one example each of -

(a) A peroxide

(b) A mixed oxide

(c) A dioxide.

Complete the statements by filling in the blank with the correct word/s:

1. Direct combination reaction of phosphorus pentoxide with water gives …………… [H₃PO₃/H₃PO₄].

2. Decomposition of silver salts in the presence of sunlight is an example of …………… [double decomposition / photochemical decomposition].

3. The element molybdenum used in the reaction of nitrogen with hydrogen at elevated temperatures is an example of a …………… [promoter/catalyst].

4. The reaction of coke with steam to give water gas is an example of an …………… [exothermic/endothermic] reaction.

5. The metal which reacts with steam and the reaction is reversible is …………… [calcium/iron]

Give a balanced equation for each of the following types of reactions:

1. A thermal decomposition reaction in which a compound decomposes to give two new compounds.

2. A reaction of direct combination i.e. synthesis in which two gases combine to give another gas - which turns lime water milky.

3. A thermal decomposition reaction in which a metallic nitrate decomposes to give - a basic oxide.

4. A catalytic, reversible, exothermic reaction.

5. A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.