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Standard VII
Chemistry
Chemical Change
Question

Ripening of fruits and growing of plant into a tree is an example of:
  1. chemical change
  2. Both A and B
  3. physical change
  4. None of the above

A
physical change
B
chemical change
C
Both A and B
D
None of the above
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Solution
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A change in which chemical composition and chemical properties of the reacting substances undergo a change is called a chemical change. During ripening of fruits or growing of plant into a tree, a chemical change occurs which helps in ripening and growing of plants into tree and cannot be reversed.

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Similar Questions
Q1
Ripening of fruits and growing of plant into a tree is an example of:
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Q2
Fill in the blanks with the correct words.
1. Melting of ice-cream is an example of a/an .................... (reversible/irreversible) change.
2. Ripening of fruits is an example of a/an .................... (reversible/irreversible) change.
3. Cooking of foood is an example of a/an .................... (reversible/irreversible) change.
4. Breaking of glass is a .................... (physical/chemical) change.
5. .................... (Heating/Cooling) causes steam to change into water.
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Q3

Sort the following according to their physical and chemical changes.

(i) Combustion of wood

(ii) Melting of ice.

(iii) Cooking of food.

(iv) Rusting of iron.

(v) Ripening of fruits.

(vi) Tearing of papers.


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Q4
(a) Differentiate between physical and chemical changes.
(b) Give reasons:
(i) Ripening of fruit is a desirable change.
(ii) Curdling of milk is a slow change.
(ii) Digestion of food is an irreversible change.
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Q5
A seed growing into a tree is an example of:
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