Question

apply learning of scientific concept in daily life (what help in making curd how does Food go bad etc)​

Answer 1

Food and other edible substances can go bad due to the process of Oxidation also known as Rancidity, a food item becomes rancid when it reacts with the oxygen which is present in a very large quantity all around us!

When the food becomes rancid it becomes distasteful and bad to eat.

We can stop food from going bad by several methods like

1) Chips come in packets which is filled with nitrogen to protect it

2) storing food items in air tight containers to protect them.

Curd is made when milk is added to the curd.

This process is also called Fermentation. During fermentation, the bacteria use enzymes to produce energy (ATP) from lactose thus creating more curd.

Thanks for the question!