GKFix MCQ Question

Why should the cork in the Thiele’s tube have a side groove?

• A. To improve appearance
• B. For inserting a second thermometer
• C. To allow vapours to escape and prevent bursting
• D. The cork of the Thiele’s tube or Kjeldahl flask holding the thermometer should have a side groove so that vapours can escape through it during the process of heating to prevent bursting of the tube or flask.