Chemistry
Assertion (A): Miscible liquids dissolve into each other.
Reason (R): Petrol and water are miscible liquids.
- 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.
Answer
A is true but R is false.
Explanation — Miscible liquids are those liquids which mix completely with each other to form a single, uniform layer. Hence, they can be said to "dissolve" in each other. So, Assertion (A) is true.
Petrol and water are immiscible; they do not mix and form two separate layers (petrol floats on water). So, Reason (R) is false.
Therefore, Assertion (A) is true but Reason (R) is false.
Related Questions
Assertion (A): Water is a universal solvent.
Reason (R): We use water daily for drinking, washing, bathing, etc.
- 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.
Assertion (A): Water exists in all the three states of matter.
Reason (R): On cooling, liquid water changes into ice, the solid state. On heating, it changes into vapour, the gaseous state.
- 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.
Assertion (A): A solution is a heterogeneous mixture of two or more substances with variable composition.
Reason (R): The component of a solution that dissolves is called as solute, while the other component in which the solute dissolves is called a solvent.
- 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.
Assertion (A): Pure water is tasteless but the water which we drink has taste.
Reason (R): Drinking water contains dissolved minerals and gases.
- 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.