Properties of Alpha, Beta and Gamma Rays

Q. An alpha particle is

1. An electron
2. One neutron and one proton
3. An X-ray emission
4. Two protons and two neutrons

Q. Assertion : A beam of electrons deflects more than a beam of $\alpha$ -particles in an electric field.
Reason : Electrons possess negative charge while $\alpha$ -particles possess positive charge.

1. If both assertion and reason are true and the reason is the correct explanation of the assertion.

2. If both assertion and reason are true but reason is not the correct explanation of the assertion.

3. If assertion is true but reason is false.

4. If the assertion and reason both are false.
5. If assertion is false but reason is true.

Q. Assertion : A beam of electrons deflects more than a beam of $\alpha$ -particles in an electric field.
Reason : Electrons possess negative charge while $\alpha$ -particles possess positive charge.

1. If both assertion and reason are true and the reason is the correct explanation of the assertion.

2. If both assertion and reason are true but reason is not the correct explanation of the assertion.

3. If assertion is true but reason is false.

4. If the assertion and reason both are false.
5. If assertion is false but reason is true.

Q. Assertion (A) : γ-rays have very high penetrating power.
Reason (R) : γ-rays are high-energy electromagnetic radiations.

1. Statement 1 is True, Statement 2 is False.
2. Statement 2 is True, Statement 1 is False
3. Both the statements are True.
4. Both the statements are False.

Q. In the decay sequence, ${}_{92}^{238}U\stackrel{-x_1}{\to }{}_{90}^{234}Th\stackrel{-x_2}{\to }{}_{91}^{234}Pa\stackrel{-x_3}{\to }{}^{234}Z\stackrel{-x_4}{\to }{}_{90}^{230}Th{x}_1,x_2,x_{3}and{x}_4$ are particles /radiation emitted by the respective isotopes. The correct option(s) is/are:

1. $x_3$ is $\gamma -ray$
2. Z is an isotope of uranium
3. $x_2$ is ${\beta }^{-}$ decay
4. $x_1$ will deflect towards negatively charged plate

Q. In the nuclear transmutation,
${}_4^{9}Be+X{\to }_4^{8}Be+Y$
$(X,Y)$ is/are:

1. $(\gamma ,n)$
2. $(p,D)$
3. $(n,D)$
4. $(\gamma ,p)$

Q. An alpha particle is

1. An electron
2. One neutron and one proton
3. Two protons and two neutrons
4. An X-ray emission

Q.

Which form of radioactivity is most penetrating?

1. alpha particles

2. beta particles

3. neutrons

4. gamma rays

Q.

Which one of these causes the most damage when ingested?

1. beta emitters

2. alpha emitters

3. gamma emitters

4. all of these

Q.

Which form of radioactivity is most penetrating?

1. alpha particles

2. beta particles

3. neutrons

4. gamma rays