E. Give reasons for the following.
1. Cakes and pastries are fluffy in nature.
2. Oil acts as a preservative for stored food.
3. Raisins have a longer shelf-life than grapes.
4. All the bowls used to feed a new born baby is boiled in water.
5. Canning is an effective method of preserving food.
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Answers
Answer:
1. The baking is powder is mixed with flour; when water is added to it to turn it into a dough, carbon dioxide is evolved. The evolution of this carbon dioxide results to capture of carbon dioxide in the dough which results in the production of bubbles and makes the cake to become fluffy.
2. Olive oil is a natural preservative that prevents spoilage by isolating the food from air, providing a seal that can delay oxidation, deterioration and molding.
3. Raisins are already dried and air fresheners had gone there then what is remained to rot off and the grapes are still fresh and if we left them will not preserve them they will be rotten easily and if we compare the both raisins and grapes are having a shorter shelf life than raisins
4. Boiled to kill the germs in the untensil because they have less immunity to fight from the germs
5. Canning is an important, safe method for preserving food if practiced properly. The canning process involves placing foods in jars or similar containers and heating them to a temperature that destroys micro-organisms that cause food to spoil.
Answer:
1. The baking powder is mixed with flour; when water is added to it to turn it into a dough, carbon dioxide is evolved. The evolution of this carbon dioxide results in to capture of carbon dioxide in the dough which results in the production of bubbles and makes the cake fluffy.
2. Olive oil is a natural preservative that prevents spoilage by isolating the food from air, providing a seal that can delay oxidation, deterioration and moulding.
3. Raisins are already dried and air fresheners had gone there then what is remained to rot off and the grapes are still fresh and if we left them will not preserve them they will be rotten easily and if we compare both raisins and grapes are having a shorter shelf life than raisins
4. Boiled to kill the germs in the utensil because they have less immunity to fight the germs
5. Canning is an important, safe method for preserving food if practised properly. The canning process involves placing foods in jars or similar containers and heating them to a temperature that destroys micro-organisms that cause food to spoil.
Explanation: