# Statement (A): Alpha particles are much heavier than electrons Statement (B): Alpha particles are positively charged. Statement (C): Alpha particles move with very high velocity.

1. A

All the above statements are correct

2. B

All the above statements are incorrect

3. C

A, B are correct and C is incorrect

4. D

A, B are incorrect and C is correct

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### Solution:

I) Electrons have no considerable mass compared to alpha particles.

II) Doubly ionized helium particle is called $\alpha -\text{Particles}$  has positive charge.

III) It has less mass.

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