Give uses of the following metals :
(i) Aluminium
(ii) Copper
(iii) Zinc
(iv) Iron

Name the chief form of occurrence of the following in the earth's crust. (a) Copper (b) Zinc (c) Iron

Mention one use for each of the following drugs: (i) Veronal (ii) Codeine (iii) Iproniazid

Which of the following have same units: (i) Work, (ii) Heat, (iii) Energy (iv) Entropy

Identify the following as metal or non-metal.(i) Graphite (ii) Lead (iii) Mercury (iv) Sulphur (v) Potassium (vi) Nitrogen (vii) Diamond (vii) Ozone

Which of the following are the fishery by-products? (i) Oil , (ii) Manure (iii) Glue , (iv) Isinglass (v) Shagreen , (vi) Leather

Define the following terms. (i) Genus (ii) Family (iii) Order (iv) Class (v) Phylum

Identify the aquatic mammal(s) from the following (i) Balaenoptera (ii) Equus (iii) Delphinus (iv) Pteropus (v) Felis