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Chapter 3: Problem 341

A cold soft drink is kept on the balance. When the cap is open, then the weight (A) Increases (B) Decreases (C) First increase then decreases (D) Remains same

Short Answer

Expert verified
When we open the cap of a cold soft drink, the pressure is released, causing the gas bubbles to escape from the soft drink. This results in the overall weight of the soft drink to decrease due to the loss of the gas bubbles' contribution to the weight. Hence, the correct option is (B) Decreases.

Step by step solution

01

Understand the components of the soft drink

A soft drink contains the liquid and gas bubbles within it. Gas bubbles contribute to the weight too, as they are trapped inside the closed container under pressure.
02

Opening the cap

When we open the cap, we release the pressure. As a result, the gas bubbles begin to escape the soft drink due to the pressure difference between the inside and outside of the container.
03

Evaluating the weight

As gas bubbles escape, their contribution to the overall weight is lost. Since the liquid itself is not affected by opening the cap, the overall weight of the soft drink will decrease due to the escaping gas.
04

Choosing the correct option

Based on the analysis, when we open the cap, the weight of the soft drink decreases. Therefore, the correct answer is: (B) Decreases

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