Wastewater Story
Science · Grade 6 · Week 32 · 25 questions
Mixtures and solutions are everywhere — from the air you breathe to the drinks you enjoy. Understanding how substances combine and how to separate them is fundamental to chemistry.
What you'll practise
- Find the mean of data sets
- Distinguish between mixtures and pure substances
- Identify methods for separating mixtures
- Understand dissolving and solubility
All 25 questions in this Wastewater Story quiz
Grade 6 Science — Wastewater Story: 25 practice questions with instant scoring and explanations.
- Wastewater from households and industries is called...
- The treatment of sewage is done to:
- Primary treatment of sewage involves:
- Secondary treatment of sewage uses...
- Tertiary treatment of sewage removes:
- Which microorganism helps in decomposition during sewage treatment?
- Activated sludge method uses...
- Water pollution is mainly caused by:
- Which is a MAJOR water pollutant from industries?
- Eutrophication in water bodies is caused by excess...
- Biomedical waste should be disposed by:
- The treatment process that removes chlorine after disinfection is called...
- Septic tanks are used in areas with:
- Chlorination of water helps in:
- Which gas is produced during anaerobic decomposition in sewage treatment?
- The sludge produced during sewage treatment can be used as:
- Industrial wastewater differs from domestic sewage because it:
- Zero Liquid Discharge (ZLD) means:
- Which organization sets water quality standards in India?
- The safest water source for drinking is...
- Biosolids from sewage treatment plants are used as...
- Chemical oxygen demand (COD) measures:
- Reverse osmosis is used for:
- Which industry generates the MOST wastewater?
- Safe disposal of hospital waste includes:
Question 1 of 250 correct so far