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प्रश्न
Which of the following radiation is most ionising?
विकल्प
α-particles
β-particles
γ-radiation
X-rays
MCQ
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उत्तर
α-particles
Explanation:
Alpha particles have a large mass and carry a double positive charge, so they ionise atoms strongly. Their relative ionising power is very high compared with β-particles, γ-rays and X-rays.
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