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20 questions
Which of the following is an irreversible change?
Combing hair
Crushing a can
Burning paper
Dissolving salt in water
Which of the following is reversible change?
Bending a wire
Making tea
Rusting of iron
Sprouting a seed
Which of the following is a chemical change?
Harvesting cotton fibres
powdering jeera seeds
Making cheese from milk.
Cutting an apple
Which of the following is an application of expansion due to heat.
Rotating of a fan
Rusting of iron
Working of a television
Working of a mercury thermometer
Which of the following contracts the least.
Solida
Liquids
Gases
All contract equally.
MELTING OF ICE IS WHAT CHANGE
PHYSICAL CHANGE
CHEMICAL CHANGE
BURNING OF WOOD IS WHAT CHANGE
PHYSICAL CHANGE
CHEMICAL CHANGE
CHEMICAL CHANGE IS REVERSIBLE
TRUE
FALSE
Reversible Change
Irreversible Change
Both options are correct
None of the above
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