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प्रश्न
Assertion: A drop of petrol when touched with finger gives a chill feeling.
Reason: The above phenomenon is an endothermic one.
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.
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उत्तर
Both A and R are true and R is the correct explanation of A
APPEARS IN
संबंधित प्रश्न
State the effect of an exothermic reaction on the surroundings.
What do you observe when ammonium chloride is dissolved in water.
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
Explain the term with examples.
Endothermic reaction
Give an example of the following chemical changes.
A reaction involving blue solution.
Complete the following statement.
On heating, hydrated copper sulphate changes its colour from ________ to __________.
Why energy is involved in a chemical change?
State the following reaction whether heat is evolved or absorbed –
Two neutral gases on passage through an electric are given nitric oxide.
Give an example with a balanced equation, of the following reaction:
exothermic reaction
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
