Which of the following radiations is the least penetrating ?
Correct answer: A. α-rays
- A. α-rays
- B. β-rays
- C. γ-rays
- D. X-rays
Explanation
Alpha particles are the least penetrating listed because they are relatively heavy and carry a +2 charge, causing intense ionisation over a short distance. A sheet of paper or the outer dead layer of skin can stop them, unlike beta, gamma, and X-rays.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?
A thermal nuclear reactor compared to a fast breeder reactor ?
Sodium melts (at atmospheric pressure) at a temperature of ____________ °C?
Moderating material used in a thermal-reactor should be a ____________________?
Atoms of U-238 and U-235 differ in structure by three_____________________?
Nuclear fuel usually used in a Boiling Water Reactor (BWR) is__________________?