Ground water is normally —

এই অধ্যায়ের আরও প্রশ্ন

• C-02-Q065Which is NOT a method of water purification?
• C-02-Q066Filtration is a process to —
• C-02-Q067In water filtration, water is passed through —
• C-02-Q068Which gas is commonly used as a disinfectant in water purification?
• C-02-Q069The chemical formula of bleaching powder is —
• C-02-Q070Water purification tablets used during floods in Bangladesh basically contain —
• C-02-Q071Other than chlorine, germs in water can be destroyed by —
• C-02-Q072In bottled water factories, water is disinfected by —
• C-02-Q073After starting to boil, water should be heated additionally for how long to disinfect completely?
• C-02-Q074Boiling is a method of —