Q171 / 180 · AIIMS 2002 · Zoology

Which of the following digestive juices has the minimum $\mathrm{pH}$ value?

  • A
    Bile
  • Correct answer
    B
    Gastric juice
  • C
    Saliva
  • D
    Pancreatic juice

Solution

Bile is an alkaline viscous fluid, yellow to green in colour and having a $\mathrm{pH}$ of 7.8-8.6. Saliva is secreted by salivary gland and its $\mathrm{pH}$ is about 6.8 . Gastric juice is secreted by the gastric gland in stomach and its $\mathrm{pH}$ value is 1-2.5 and pancreatic juice is colourless watery fluid and slightly alkaline. Its $\mathrm{pH}$ is $7.5-8.0$. Therefore gastric juice has minimum $\mathrm{pH}$ value.

Hence, the correct answer is option: 'B'.

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