Oil and fat containing food items are flushed with nitrogen. Why ?
Nitrogen is an inert gas and does not easily react with these substances. On the other hand, oxygen reacts with food substances and makes them rancid. Thus, bags used in packing food items are flushed with nitrogen gas to remove oxygen inside the pack. When oxygen is not present inside the pack, rancidity of oil and fat containing food items is avoided.
Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.
Explain the "Oxidation'' in terms of gain or loss of oxygen with two examples.
Give an example of a double displacement reaction other than the one given in image.
What do you mean by a precipitation reaction? Explain by giving examples.
Why should a magnesium ribbon be cleaned before burning in air ?