Exams › SSC CGL (Prelims) › General

Which type of radioactive decay results in an increase in the atomic number of the parent nucleus by one, while keeping the mass number unchanged?

1. Alpha decay
2. Beta-minus decay
3. Beta-plus decay
4. Gamma decay

Correct answer: Beta-minus decay

Solution

In beta-minus decay, a neutron in the nucleus changes into a proton, an electron, and an antineutrino. This increases the atomic number by one while the mass number remains unchanged.

Related SSC CGL (Prelims) General questions

• Which is generally not classified as a weather parameter?
• The main objective of the National Green Hydrogen Mission is to:
• When did India successfully conduct the first Gaganyaan TV-D1 test flight?
• Consider the following statements regarding renewable energy certificates (RECs): 1. They are issued for electricity generated from renewable sources. 2. They help utilities meet renewable purchase obligations.
• The approximate percentage of nitrogen in Earth’s atmosphere is:
• The speed required by a satellite to remain in a circular orbit around Earth is known as:

⚔️ Practice SSC CGL (Prelims) General free + battle 1v1 →