Advertisements
Advertisements
प्रश्न
True or false
Is melting of ice a reversible change?
पर्याय
True
False
Advertisements
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Changes in which only ______ properties of a substance change are called physical changes.
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
Choose the most appropriate answer.
Rising and setting of the sun at a given place is a
Write short answer.
Give two examples of periodic changes
Is a change of state of matter – a physical or a chemical change. Give reasons.
Digestion of food is a physical change.
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
Keeping a stone in sunlight for few hours is ______.
