Question

Write down two examples for each of the following substances:
a) Food preservative b) Fuel c) Building material

Answer 1

a) Food preservative: <Any 2> (Each example carries 0.5 marks)

• Common salt
• Sodium benzoate
• Sodium metabisulphate
• Salicylic acid

b) Fuel: <Any 2> (Each example carries 0.5 marks)

• Petrol
• Diesel
• Coal
• Cooking gas (L.P.G - Liquified petroleum Gas)

c) Building material: <Any 2> (Each example carries 0.5 marks)

• Glass
• Paints
• Mortar
• Steel