Question

Shown below are images of four different models of dispensers. Which of the statements is/are TRUE?

• A. At least 2 models are based on valves; at least 2 models have hinges.
• B. 2 models are based on valves; all 4 models can be used without lifting them when 1/8 filled.
• C. At least 1 model uses lever; all 4 models can be used without lifting them when 1/8 filled.
• D. At least 1 model uses pressure for dispensing liquid; at least 1 model uses lever principle.

Hint:

For dispenser models, observe the mechanism (valve, pressure, lever, hinge) and the physical action required for dispensing.

Answer 1

The Correct Option is A, D

Step 1: Models that use valves typically operate by releasing liquid when a valve is opened. Models with hinges require the user to apply a force to open them.
Step 2: Some models use pressure for dispensing liquid, while others rely on a lever mechanism.
Step 3: Based on these observations, the correct answers are (A) and (D).