WorksheetsChanges Around Us
Total questions: 15
Worksheet time: 12mins
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.
From which of the following containers do you think maximum evaporation will take place?
In all reversible changes, the internal structure of the substances remains the (a)
The gas or vapour of a substance can be changed back to liquid by (a)
In chemical changes, original substances (a) be obtained easily.
When a material is heated, the space between its particles (a)
The amount of energy required in a physical change is usually (a)
UNJUMBLE : OPRDCUST
(a)
UNJUMBLE : SERACTANT
(a)
UNJUMBLE : ACTAYLST
(a)
UNJUMBLE : TCONRACTION
(a)
