Q44.The water quality of a pond was analysed and its BOD was found to be 4. The pond has (1) Highly polluted water (2) Water has high amount of fluoride compounds (3) Very clean water (4) Slightly polluted water
What This Question Tests
This question assesses the knowledge of Biochemical Oxygen Demand (BOD) values as an indicator of water pollution levels.
Concepts Tested
📚 NCERT Sections This Tests
1.25 — Amongst The Following Compounds, Identify Which Are Insoluble, Partially
Chemistry Class 11 · Chapter 1
1.25 Amongst the following compounds, identify which are insoluble, partially soluble and highly soluble in water? (i) phenol (ii) toluene (iii) formic acid (iv) ethylene glycol (v) chloroform (vi) pentanol. 1.26 If the density of some lake water is 1.25g mL–1 and contains 92 g of Na+ ions per kg of water, calculate the molarity of Na+ ions in the lake.
1.3 — Define The Following Terms:
Chemistry Class 11 · Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
1.27 — If The Solubility Product Of Cus Is 6 × 10–16, Calculate The Maximum Molarity Of
Chemistry Class 11 · Chapter 1
1.27 If the solubility product of CuS is 6 × 10–16, calculate the maximum molarity of CuS in aqueous solution.
📋 Question Details
- Chapter
- Environmental Chemistry
- Topic
- Water pollution (BOD)
- Year
- 2023
- Shift
- 30 Jan Shift 2
- Q Number
- Q44
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 14: Environmental Chemistry
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