Question

C. LONG ANSWER TYPE QUESTIONS
1. State three changes which are reversible and three which are irreversible.
2. Give three points of difference between reversible and irreversible changes.
3. Give an experiment to show that solids expand on heating.
4. Describe some ways with examples to bring about a change.
5. In a wooden wheel, why is the metallic rim made slightly shorter than the wheel?​

Answer 1

Answer:

1.REVERSIBLE.

ROLLING A CHAPPATI

FOLD A PAPER

FOLD A CLOTH

2.REVERSIBLE CHANGES CAN B REVERSED AND WHILE IRREVERSIBLE CHANGES CAN NOT .

REVERSIBLE ALSO KNOWN AS PHYSICAL CHANGE AND IRREVERSIBLE KNOWN AS CHEMICAL CHANGE

THEN GIVE EXAMPLES OF BOTH.

3.TAKE SOME ICE AND THEN HEAT IT IT WILL EXPAND BECOME WATER

4. TAKE A IRON WIRE AND THEN HEAT IT IT WILL EXPAND AND B MOVED

5.TO FIT INSIDE IT

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