RADIOACTIVE DECAY Quiz

What is conserved in nuclear processes during radioactive decay?

• Only mass number

• Only charge

• Both nucleon number and charge

• Energy only

Which statement is true about α-particles?

• They have no mass and no charge

• They are electrons with negative charge

• They consist of 2 protons and 2 neutrons

• They are more penetrating than gamma rays

Which of the following is the antiparticle of an electron?

• Proton

• Positron

• Antineutrino

• Neutron

Why do β-particles have a continuous range of energies?

• They lose energy in the air

• Neutrinos/antineutrinos are emitted and share the energy

• Their mass is very small

• They have higher penetration

Which force is responsible for holding nucleons together in a nucleus?

• Electric force

• Gravitational force

• Strong nuclear force

• Magnetic force

What is the correct α-decay equation for Uranium-238?

• 238U → 234Th + 4α

• 238U → 234Pa + β

• 238U → 235U + n

• 238U → 234Th + 4He

Which statement is true about gamma decay?

• Particles are emitted from the nucleus

• It changes the proton number

• Only energy is released as electromagnetic radiation

• The nucleus gains mass

How many bananas (0.1 μSv each) equal the radiation from a chest X-ray (100 μSv)?

• 10

• 100

• 1,000

• 10,000

Which radiation has the highest penetration ability?

• Alpha

• Beta

• Gamma

• Neutron

Which of the following is a property of β⁺ decay?

• Neutrinos are emitted

• Antineutrinos are emitted

• Positrons and neutrinos are emitted

• Neutrons are emitted