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Which of the following is used for ionizing radiation?

(a) Infrared radiation

(b) Microwave radiation

(c) Radiowave radiation

(d) Gamma radiation

I got this question in an interview for internship.

Asked question is from Aseptic Packaging topic in division Aseptic Packaging of Foods of Food Packaging Technology

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Best answer
The correct answer is (d) Gamma radiation

The explanation is: Gamma radiation is used for ionizing radiation. It can also be done by X rays, electron beams, or higher energy rays, i.e. short wavelengths (less than 1 nanometer).  It acts by dislodging electrons from atoms and form ions.

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