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Questions and Answers
What is the purpose of using intravenous injections dissolved in water containing salts at particular ionic concentrations?
What is the purpose of using intravenous injections dissolved in water containing salts at particular ionic concentrations?
- To reduce the effectiveness of the injections
- To cause precipitation of the salts
- To match with blood plasma concentrations (correct)
- To increase the risk of adverse reactions
How does 1 part per million (ppm) of fluoride ions in water affect tooth decay?
How does 1 part per million (ppm) of fluoride ions in water affect tooth decay?
- Has no effect on tooth decay
- Causes tooth decay
- Prevents tooth decay (correct)
- Induces mottling of teeth
What distinguishes German silver (mixture of copper, zinc and nickel) from brass (mixture of copper and zinc)?
What distinguishes German silver (mixture of copper, zinc and nickel) from brass (mixture of copper and zinc)?
- Presence of nickel (correct)
- Higher concentration of copper
- Lack of zinc
- Higher density
What do colligative properties of solutions correlate with?
What do colligative properties of solutions correlate with?
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Why do we rarely come across pure substances in normal life?
Why do we rarely come across pure substances in normal life?
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