Weighing Balances in Pharmaceutics Quiz
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Questions and Answers

What is the maximum capacity of general-purpose balances used in pharmaceutics?

  • 100 g
  • 300 g (correct)
  • 0.01 g
  • 0.0001 g

In what conditions are analytical balances likely to be found?

  • Open laboratory with vibrations
  • With frequent manual adjustments
  • On a draught-free surface (correct)
  • Highly sensitive to external factors

What is the weighing precision of analytical four-figure balances?

  • 0.01 mg
  • 0.1 mg (correct)
  • 1 g
  • 10 g

What feature of general-purpose balances allows the automatic subtraction of the container's mass?

<p>Electronic zero facility (self-taring) (D)</p> Signup and view all the answers

What is a key maintenance aspect of analytical balances according to the text?

<p>No need for any user adjustments like levelling or zero adjustment (D)</p> Signup and view all the answers

What factors determine the weighing container to be used for chemicals?

<p>The amount of chemical to be weighed and its properties (B)</p> Signup and view all the answers

Which type of weighing containers should be used for analytical procedures in pharmacy?

<p>Weighing boats, weighing bottles, glass, or plastic sample tubes (D)</p> Signup and view all the answers

When is it recommended to use weighing boats to transfer a solid into a volumetric flask?

<p>When the solid is known to be totally soluble in the solvent (D)</p> Signup and view all the answers

What should be considered when deciding on the weighing container according to the text?

<p>The accuracy to which the chemical is to be weighed (A)</p> Signup and view all the answers

Why are special glazed paper containers mentioned in relation to weighing containers?

<p>As an alternative to glass weighing boats (C)</p> Signup and view all the answers

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