OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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change in odor
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chopping
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phase change
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rusting
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Detailed explanation-1: -Processes such as melting, boiling, evaporation, freezing, condensation, dissolution are reversible changes. A few examples are melting of wax, freezing of ice, and boiling water which evaporates as steam and condenses back to water.
Detailed explanation-2: -Examples of reversible physical changes include: Melting of ice. When ice melts, it turns into water. Water can be frozen back to obtain ice again.
Detailed explanation-3: -Moulding clay: when a piece of clay is moulded, the shape of clay changes but no new substance is formed. So, this physical change is considered as a reversible change. Irreversible changes: These changes are permanent and cannot be reversed.
Detailed explanation-4: -Reversible changes: The changes which can be brought back to its original form are known as reversible changes. For example, melting of wax and stretching of a rubber band. Irreversible changes: The changes in which the matter cannot be brought back to its original state are known as irreversible changes.
Detailed explanation-5: -Cutting trees into logs. Broken glass. Growth of tree. Pulverizing a rock. Mixing paint colors. Cracking an egg. Shredding paper. Sharpening pencil. More items