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A) sulfuric acid + sodium hydroxide → sodium sulfate + water
Geology and astronomy are two types of earth science. Geology is the study of rocks and minerals and astronomy is the study of space.
Answer
A. None of these
Explanation
Gamma rays are ionizing electromagnetic radiation, obtained by the decay of an atomic nucleus. Gamma rays are more penetrating, in the matter, and can damage living cells to a great extent. Gamma rays are used in medicine (radiotherapy), industry (sterilization and disinfection), and the nuclear industry.
Thus, gamma rays are used for all the options given in B - D. So the correct answer is option A. None of these
