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प्रश्न
The question has four options. Choose the correct answer:
A huge quantity of sewage is dumped in a river. The BOD will
पर्याय
increase
decrease
slightly decrease
remain unchanged
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उत्तर
increase
APPEARS IN
संबंधित प्रश्न
Give any two ways in which biodegradable substances would affect the environment.
Which of the following is the best method to dispose of biological wastes from hospitals?
(a) landfill
(b) recycling
(c) incineration
(d) composting
Differentiate between degradable and non-degradable type of waste.
Give reason for the following :
Broken glass utensils are a kind of non-degradable waste.
Give Technical Terms:
Any non-biodegradable pollutant.
Observe the bins and waste material heaps and suggest what materials can be used for preparing handicrafts materials.
Municipality provides two types of dustbins for garbage collection. One coloured with blue colour and other with green colour. From following wastes which you will put in the which dustbin?
Plastic materials, metals and glass items, wastes of plants and animals, peels of fruits and vegetables, dried leaves and twigs, remains of meat like flesh and bones.
Write 3 sentences on what comes to your mind when you chance to see the following.
Foul odour emanating from garbage at the entrance of your house.
What happens when cooking medium is made to flow down a drain?
Define the following term:
Pollution
