Advertisements
Advertisements
प्रश्न
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
पर्याय
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true
Advertisements
उत्तर
A is false but R is true
APPEARS IN
संबंधित प्रश्न
A burning candle shows both physical and chemical changes. Explain ?
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Periodic and non-periodic change
Select the chemical changes from the following list of changes
Change of seasons
Digestion of food is a physical change.
What type of energy changes is associated when ice melts?
When solute is dissolved in a solvent it forms a solution.
Water is known as a universal solvent. Why?
Mention some of the different conditions needed for chemical changes to occur.
