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Potassium alum is an example of a: Mixed salt Double salt Normal salt Hydrogen salt {Ans: Double salt}The principal anion of the intracellular fluid compartment is Sulfate Bicarbonate Phosphate Chloride {Ans: Phosphate}Oxygen and ozone are: Isotopes Allotropes Polymorphs Isobars {Ans: Allotropes}Which substitution among the choices is most evident in phenylethylamines that have reuptake blocking action? Tert-butyl at the nitrogen 4-OH substitution at the ring "Diol, noncatechol substitution" Methylation at the alpha-carbon {Ans: Methylation at the alpha-carbon}A buffer system that has been modified to include NaCl to make it isotonic with physiological fluid: Sorensen phosphate buffer Giffords buffer Feldman's buffer Acid phthalate buffer {Ans: Sorensen phosphate buffer}It is used in surgical repairs of bones, nerves and muscles for it attaches itself to bones and is unaffected by the body fluids. Tin Iron Tantalum Aluminum {Ans: Tantalum}