Which of the following is a physical change?a)Formation of curd from m...
Physical Change
A physical change is a type of change in which the substance undergoes a change in its physical properties without changing its chemical composition. In a physical change, the substance remains the same at the molecular level, only its physical appearance changes.
Examples of Physical Change
a) Formation of curd from milk: This is a chemical change, not a physical change. Bacteria are added to milk, which produce an enzyme called rennet. Rennet breaks down the proteins in milk to form curd.
b) Rusting of iron: This is a chemical change, not a physical change. Iron reacts with oxygen and moisture in the air to form a new substance, iron oxide.
c) Shredding of clothes: This is a physical change. The clothes are torn into smaller pieces, but their chemical composition remains the same.
d) Heating sugar to form caramel: This is a chemical change, not a physical change. When sugar is heated, it breaks down into its constituent molecules and forms a new substance, caramel.
Conclusion
Of the given options, shredding of clothes is a physical change because it only changes the physical appearance of the clothes, not the chemical composition.
Which of the following is a physical change?a)Formation of curd from m...
Shredding of clothes is a physical change as it only changes the appearance of the clothes and can be reversed by stitching them back together.
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