GATE CE 2025 Set 2 — Question 61

NAT+2 / -0MediumpH, Turbidity, Hardness & AlkalinityWater QualityEnvironmental Engineering

Environmental Engineering → Water Quality → pH, Turbidity, Hardness & Alkalinity

Last updated 5 September 2026

Question

\text{mg/L}

Ion	Concentration ( $\text{mg/L}$ as $\text{CaCO}_3$ )
$\text{Ca}^{2+}$	$150$
$\text{Mg}^{2+}$	$40$
$\text{Fe}^{2+}$	$10$
$\text{Na}^{+}$	$50$
$\text{K}^{+}$	$10$
$\text{CO}_3^{2-}$	$120$
$\text{HCO}_3^{-}$	$30$
$\text{Cl}^{-}$	$50$

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