Which of the following pairs is NOT correctly matched? (Quantity – S. I. Unit)

Which one of the following is not radioactive?

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

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…

Of the following, which does not belong to a nuclear reactor ?

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