Isotopes are used in which of the following applications?
A. Treatment of goitre
B. Building materials
C. As fuel in thermal power plants
D. Chemical fertilizers
Answer: Option A
Solution (By JKSSB Mock Tests)
Iodine-131 is a radioactive isotope used to treat thyroid disorders including goitre and cancer. Carbon-14 for dating, Cobalt-60 for cancer therapy, Uranium-235 as fuel in nuclear reactors. Non-radioactive isotopes are used as tracers. Goitre is often caused by iodine deficiency, but radioactive iodine can be used therapeutically.
Explanation:
Methane (CH4) is commonly known as marsh gas because it is produced by the anaerobic decomposition of organic matter in swamps and marshes by methanogenic bacteria. It is also the primary component of biogas and natural gas.
Explanation:
Gamma rays are high-frequency electromagnetic waves emitted from the nucleus. They have very high penetration power and are used in cancer therapy.
Explanation:
Catenation is the ability of carbon atoms to form long chains, rings, and networks via covalent bonds. This leads to a vast number of organic compounds. Silicon also catenates but to lesser extent.
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