GATE ES · 2026 · ES
Question 41: Principles of water chemistry
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Question 41
ESMCQ2 marksNeeds review
The analysis of a water sample is shown in the table. The hardness of the water sample is ______ mg/L as CaCO
.Atomic weight (g/mol): Ca = 40; Mg = 24; Na = 23; Cl = 35.5; S = 32; O = 16; N = 14
Species | Concentration (mg/L) |
|---|---|
Na | 30 |
Ca | 10 |
Mg | 15 |
Cl | 30 |
SO | 60 |
NO | 5 |
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2026ES
GATE ES 2026 · Paper 1
Environmental Science and Engineering · Original paper archive
- Section
- Environmental Science and Engineering
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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