NSEB topic read · 2 min
Read Secretions by Electrolyte Signature
Use the dominant ions to identify a secretion before matching it to an organ.
NSEB · Excretory System · 1 linked question · 100% coverage
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Body Secretions is the central idea in this question pattern. Identify the condition in the stem before applying the method below.
Study deeper: NCERT Biology · Excretory System
Read acid, alkali and plasma patterns
Blood plasma is dominated by sodium with chloride and bicarbonate. Gastric juice is identified by high hydrogen and chloride ions, while pancreatic juice is alkaline and bicarbonate-rich. Match the ionic signature rather than relying on the vague label ‘body fluid’: plasma, gastric juice, pancreatic juice. Choose B.
OlympIQ exam lens
- ✓Gastric juice: high H⁺ and Cl−.
- ✓Pancreatic juice: bicarbonate-rich and alkaline.
- ✓Plasma: sodium with chloride and bicarbonate.
OlympIQ trap
A secretion’s organ is not enough; use its major ions and acid-base role.
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