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Science

NCERT 7th Class (CBSE) Science: Chemical and Chemical Changes – Quiz

NCERT 7th Class (CBSE) Science: Chemical and Chemical Changes

NCERT 7th Class (CBSE) Science: Chemical and Chemical Changes – Quiz 28 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Chemical and Chemical Changes – Quiz: Physical Change: A physical change is a change in which no new substance is formed. Chemical Change: Those changes in which new substances are …

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NCERT 7th Class (CBSE) Science: Chemical and Chemical Changes

NCERT 7th Class (CBSE) Science: Chemical and Chemical Changes

Question: Define the following: Valency, Atomicity, Chemical Equation, Rusting, Galvanization, Crystallization. Answer: Definitions are as follows: Valency: The combining capacity of atoms of an element with the atoms of other elements is known as valency. Atomicity: The number of atoms that make up a molecule of an element is known …

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