(a) Aluminium is a more active metal than iron, but suffers less corrosion. Why? (b) Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis. (c) Why is the food containing iron salts should not be cooked in aluminium utensils?
Why is food cooked takes less time in a pressure cooker?
Suppose the standard time to cook a vegetable is 5 minutes, Bala wanted to be on the safer side so she added extra water and cooked the same food for 20 minutes so that the food does not remain uncooked. Do you agree with Bala's point of view?