This set of MCQs helps you brush up on important chemistry topics and prepare you to dive into skill practice.
True or false? Stable systems have more energy than unstable systems.
True
False
A process that does not require energy is called what?
Easy
Emission
Gravity
Spontaneous
The process by which unstable atoms lose energy in a spontaneous way is called what?
Nuclear emissions
Radiation
Decay
Instability
How many types of radiation are emitted when a nucleus undergoes radioactive decay?
2
3
4
6
Which of the following is not one of the kinds of radiation emitted during decay?
Alpha
Gamma
Omega
Beta
An isotope of oxygen has a mass number of 18. Other isotopes of oxygen will have the same____.
Number of neutrons
Mass Number
Atomic Weight
Number of protons
Neutron is used as a :
Moderator
Reducing Agent
Tracer
In biological programmes
Which of the following is radioactive element?
Sulphur
Polonium
Selenium
Tellurium