Which of the following radioactive substances enters the human body through food chain and causes many physiological disorders?

Which one of the following is not radioactive?

Which of the following isotopes is used in dating archaeological findings?

Which among the following is a positively charged particle emitted by a radioactive element?

Which of the following pairs of physical phenomenon and the discoverer is/are correctly matched ? 1. James Chadwick : Photoelectric effect 2. Albert Einstein : Neutron 3. Marie Curie : Radium Select…

Which one of the following elements' isotopes is used in the treatment of cancer?