Assertion (A): Canning is an effective method of food preservation because it destroys all microorganisms, including spores, through high heat treatment and airtight sealing. Reason (R): The hermetic sealing in canning prevents recontamination after heat sterilization, ensuring long-term shelf stability.

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Biology · Canning and Thermal Processing

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Both A and R are true, and R correctly explains A

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Answer 1

Both A and R are true, and R correctly explains A

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Both A and R are true, but R does not explain A correctly

Answer 3

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