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Difficulty: EasyDistinguishing Supported and Unsupported Inferences

Read the passage below:

Dry chemical fire extinguishers installed in tactical maintenance bays contain pressurized monoammonium phosphate powder. Over extended periods of workshop vibration and inactivity, the chemical powder can settle and compact at the base of the cylinder, potentially impeding discharge during an emergency. To maintain operational readiness, safety protocols require personnel to invert each canister monthly and tap the base lightly with a rubber mallet to loosen the agent before checking the pressure gauge.

Statement: The passage supports the conclusion that periodic physical agitation of the canister helps prevent mechanical discharge failure caused by compacted extinguishing powder.

Answer: Answer

Answer

True (The conclusion is fully supported by explicit textual evidence)
The conclusion is fully supported by the text. The passage states that compacted powder can impede emergency discharge and prescribes monthly inversion and mallet tapping specifically to loosen the chemical, directly demonstrating that physical agitation prevents discharge failure.

Step-by-Step Solution

1
Identify the cause-and-effect problem stated in the passage.
Vibration and inactivity cause chemical powder to settle and compact at the bottom, which can impede discharge during an emergency.
Establishing the specific risk factor identified by the author is essential to evaluating preventative actions.
2
Analyze the prescribed maintenance protocol and its stated purpose.
Personnel invert the canister and tap it with a mallet specifically to loosen the powder before verifying pressure.
Connecting the maintenance action to the problem confirms why physical agitation is performed.
3
Evaluate whether the conclusion in the statement is logically valid and supported.
The statement accurately synthesizes the passage facts without adding unverified assumptions or outside claims.
A supported inference must follow directly and necessarily from the evidence provided in the text.

Key Concept

Distinguishing Supported and Unsupported Inferences
Estimated Time:45s
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Distinguishing Supported and Unsupported Inferences

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