TS EAMCET · Chemistry · Environmental Chemistry

Water is considered to be polluted if the dissolved oxygen D.O. content is less than ... :... ppm :

A 5
B 10
C 15
D 100

Verified Solution

Answer & Solution

Correct Answer

(B) 10

Step-by-step Solution

Detailed explanation

No Solution Available

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Which one among the following statements is/are not correct? I. Ba compounds, generally are more covalent than Be compounds. II. The electron gain enthalpy of $\mathrm{He}$ is positive. III. The oxidation state of $\mathrm{O}$ in $\mathrm{OF}_2$ and $\mathrm{Na}_2 \mathrm{O}$ are same. IV. The radius of $\mathrm{Na}^{+}$ion is smaller than that of $\mathrm{F}^{-}$ion.

TS EAMCET 2019 Easy
The number f-electrons in +3 oxidation state of gadolinium $(Z=64)$ is $x$ and in +2 oxidation state of Ytterbium $(\mathrm{Z}=70)$ is $\mathrm{y}$. The sum of $\mathrm{x}$ and $\mathrm{y}$ is

TS EAMCET 2023 Medium
The correct order of the bond angles of the compounds $\mathrm{SiCl}_4, \mathrm{BF}_3, \mathrm{BeCl}_2$ and $\mathrm{SF}_6$ is

TS EAMCET 2022 Medium
If one wants to make methanol out of synthesis gas. What should be the ratio of the gaseous components in the synthesis gas?

TS EAMCET 2019 Easy
Which of the following is not correct regarding the properties of ionic compounds?

TS EAMCET 2004 Medium
The change in enthalpy $[Δ H]$ in ${kJmol}^{- 1}$ for the reaction is $Mg + 2 F \to {MgF}_{2}$ Given: $EA$ of $F = 328 kJ {mol}^{- 1}, {IE}_{1}$ of $Mg = 737 kJ {mol}^{- 1}, {IE}_{2}$ of $Mg = 1451 kJ {mol}^{- 1}$

TS EAMCET 2022 Medium

Explore more questions on app

From TS EAMCET

If $\int \frac{1}{(x - 2)^{5} (x - 1)^{4}} d x = \sum_{r = - 4}^{- 1} A_{r} {(\frac{x - 2}{x - 1})}^{r} + \sum_{r = 1}^{3} A_{r} {(\frac{x - 2}{x - 1})}^{r} + B f (x),$ then $f (x) =$

TS EAMCET 2021 Hard
If $2^{4 n+3}+3^{3 n+1}$ is divisible by P for all natural numbers $n$, then P is

TS EAMCET 2025 Medium
Assertion : The distance between the points $p\left(\frac{\pi}{4}\right)$ and $p\left(\frac{\pi}{3}\right)$ on the hyperbola $9 x^2+16 y^2=9$ is \[ \frac{1}{2 \sqrt{2}} \sqrt{66-33 \sqrt{2}-9 \sqrt{3}} \] Reason : $x=a \cosh t, y=b \sin \mathrm{h} t$ are the parametric equations of the hyperbola $\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$ The correct option among the following is

TS EAMCET 2022 Medium
Two persons A and B play a game by throwing two dice. If the sum of the numbers appeared on the two dice is even, A will get $\frac{1}{2}$ point and B will get $\frac{1}{2}$ point. If the sum is odd, A will get one point and B will get no point. The arithmetic mean of the random variable of the number of points of A is

TS EAMCET 2025 Medium
Consider the equilibrium, $\mathrm{H}_2+\mathrm{I}_2 \rightleftharpoons 2 \mathrm{HI}$. Calculate the equilibrium constant of the reverse reaction when the equilibrium concentration of $\mathrm{H}_2, \mathrm{I}_2$ and $\mathrm{HI}$ are $1.14 \times 10^{-2}, 0.12 \times 10^{-2}$ and $2.52 \times 10^{-2} \mathrm{~mol} \mathrm{~L}^{-1}$, respectively

TS EAMCET 2019 Easy
If the normal drawn at the point $\mathrm{P}(9,9)$ on the parabola $y^2=9 x$ meets the parabola again at $\mathrm{Q}(a, b)$, then $2 a+b=$

TS EAMCET 2024 Easy

Explore more questions on app