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A: Lead storage battery does not require...

A: Lead storage battery does not require salt bridge.
R: The solid nature of each oxidising agent and reducing agent prevent direct contact.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion.

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

C

If Assertion is true statement but Reason is false .

D

If both Assertion and Reason are false statements.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion-reason question regarding the lead storage battery and the necessity of a salt bridge, let's break down the solution step by step. ### Step 1: Understand the Assertion The assertion states that "Lead storage battery does not require a salt bridge." - **Explanation**: A lead storage battery, also known as a lead-acid battery, is a type of rechargeable battery. It typically consists of lead dioxide (PbO2) as the positive plate, sponge lead (Pb) as the negative plate, and sulfuric acid (H2SO4) as the electrolyte. ### Step 2: Understand the Reason The reason given is that "The solid nature of each oxidizing agent and reducing agent prevents direct contact." - **Explanation**: In a lead storage battery, the active materials (PbO2 and Pb) are in solid form. This solid-state prevents the oxidizing and reducing agents from coming into direct contact with each other, which is a situation where a salt bridge would typically be necessary to maintain electrical neutrality. ### Step 3: Analyze the Function of a Salt Bridge A salt bridge is used in electrochemical cells to maintain electrical neutrality by allowing the flow of ions between two half-cells. It is necessary when there are two different electrolytes in the half-cells. - **Application to Lead Storage Battery**: In the case of a lead storage battery, there is only one electrolyte (H2SO4) used throughout the system. Therefore, there is no need for a salt bridge since there are no half-cells with different electrolytes that would require separation. ### Step 4: Conclusion on Assertion and Reason - **Assertion**: True (Lead storage battery does not require a salt bridge). - **Reason**: True (The solid nature of the oxidizing and reducing agents prevents direct contact). ### Step 5: Determine the Relationship Since both the assertion and the reason are true, and the reason correctly explains the assertion, we conclude that the correct answer is: **Option 1**: If both assertion and reason are true and the reason is a correct explanation of the assertion. ---
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