खानेपानी र सरसफाइ – Water Supply & Sanitation MCQ
खानेपानी र सरसफाइ – सिभिल इन्जिनियरिङ
Water Supply & Sanitation · Civil Engineering · ४०७ प्रश्न
४०७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
खानेपानी र सरसफाइ: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Solid waste management in Nepal is mainly governed by the:
सही उत्तर: ख) Solid Waste Management Act, 2068
The Solid Waste Management Act, 2068 (2011) assigns waste management responsibility mainly to local bodies and promotes reduce, reuse and recycle.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A pour-flush latrine differs from a simple pit latrine mainly in that it has a:
सही उत्तर: ख) Water seal (trap) in the pan, flushed by pouring a small amount of water
The water seal blocks odour and flies; 1–3 litres of water poured by hand flushes excreta into a pit.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Nepal was officially declared an Open Defecation Free (ODF) country in:
सही उत्तर: घ) 2019 AD (2076 BS)
Nepal was declared ODF on 30 September 2019 (Asoj 2076 BS) after a nationwide sanitation campaign.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An ECOSAN (ecological sanitation) toilet is designed mainly to:
सही उत्तर: ख) Separate urine and faeces so they can be safely reused as fertiliser
Urine-diverting ECOSAN toilets treat faeces by dehydration/composting and use urine as a nutrient source, saving water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a Ventilated Improved Pit (VIP) latrine, fly and odour control is achieved mainly by:
सही उत्तर: क) A vent pipe with a fly screen that draws air through the pit
Air flows down the squat hole and up the vent pipe, removing odour; flies attracted to light at the top are trapped by the screen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The effluent from a septic tank is usually disposed of through a:
सही उत्तर: क) Soak pit or dispersion trench
Septic tank effluent still contains pathogens and organics, so it is infiltrated into the ground via a soak pit or dispersion trenches.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Sludge drying beds are used to:
सही उत्तर: ग) Dewater digested sludge by drainage and evaporation
Digested sludge is spread on sand and gravel beds; water drains through and evaporates, leaving dried cake.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Oxidation ditches are a modification of the activated sludge process that operate on the principle of:
सही उत्तर: घ) Extended aeration in a long oval channel with mechanical rotors
Oxidation ditches give long aeration times (extended aeration), producing a well-stabilised, low quantity of sludge.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A skimming tank in sewage treatment is used to remove:
सही उत्तर: ख) Oil, grease and floating matter
In a skimming tank lighter-than-water material rises (often aided by air) and is skimmed off from the surface.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An industry discharges wastewater with a BOD load of 600 kg/day. Taking per capita BOD contribution as 0.08 kg/day, its population equivalent is:
सही उत्तर: क) 7500
Population equivalent = 600/0.08 = 7500 persons.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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