Science - Garbage and their Disposal
Exam Duration: 45 Mins Total Questions : 30
Why should the inorganic garbage be not burnt?
- (a)
It pollutes the environment
- (b)
Soil becomes warm and dry
- (c)
Decomposers in the soil get destroyed
- (d)
Water in the soil get dried up
Observe some of these items given below.
Which of these items cannot be recycled
- (a)
P
- (b)
Q
- (c)
R
- (d)
S
The exposed garbage bin encourages the spread of
- (a)
non-infectious diseases
- (b)
deficiency diseases
- (c)
congenital diseases
- (d)
infectious diseases
Anish buried the following in a corner of his garden to dispose them off.
1. A broken egg shell
2. Pencil shavings
3. Dry leaves
4. Plastic carry bags
5. Fruit and vegetable peels
If the corner is dug up 5 years later, which of these is most likely to have remained the same?
- (a)
Dry leaves
- (b)
A broken egg shell
- (c)
Plastic carry bags
- (d)
Fruit and vegetable peels
Which of the following get completely decompose
- (a)
Left over food
- (b)
Broken glass
- (c)
Aluminium wrapper
- (d)
Polythene bags
Which of these articles cannot be recycled and used again?
- (a)
Newspaper
- (b)
Banana peel
- (c)
Raincoat
- (d)
Plastic bags
Which of the following is a good practice, concerning with the garbage collected from our houses?
- (a)
Organic wastes should be dumped in garden
- (b)
Organic wastes should be thrown in public places
- (c)
Organic wastes should be dumped in compost pit
- (d)
Organic wastes should be thrown on the road side
Solid kitchen wastes can be
- (a)
composted.
- (b)
vermicomposted.
- (c)
dumped in pit
- (d)
all of the above
Which of the following processes can be done to reuse used materials
- (a)
Production
- (b)
Reduction
- (c)
Recycle
- (d)
Composting
The rotting and conversion of some materials into manure is called
- (a)
recycling
- (b)
composting
- (c)
garbage
- (d)
land fill
Which of the following products will rot fastest when buried in soil?
- (a)
Vegetable wastes
- (b)
Plastic bottle
- (c)
Glass jar
- (d)
Eraser
Landfills are most commonly used method of soil waste disposal. Which is the best place for landfill in a city
- (a)
Near a school
- (b)
Outside the city
- (c)
Near a hospital
- (d)
Near a park
Which of the following 3R's are useful to save the environment?
- (a)
Revise, Reuse, Redeem
- (b)
Reduce, Reuse, Recycle
- (c)
Reduce, Resell, Redeem
- (d)
Revise, Resell, Reuse
Which of the following processes reduce pollution from animal excreta and organic waste from kitchen and also used economically in producing energy?
- (a)
Recycling
- (b)
Using them for producing biogas
- (c)
Dumping in land fills
- (d)
Using them directly as biofertilizers
What happens when waste materials is/are NOT properly disposed of?
- (a)
Pollution of water sources such as rivers and ponds.
- (b)
Pollution of soil
- (c)
Breeding of disease - carrying vectors
- (d)
All of these
Which of the following is/are NOT an disadvantage of waste decay?
- (a)
Decaying wastes give out poisonous gases
- (b)
Decaying wastes give out an unpleasant smell
- (c)
Biodegradable wastes are used to make compost. This make the soil fertile and help plants to grow strong and healthy
- (d)
All of these
Why is it difficult or impossible to degrade non-biodegradable wastes
- (a)
Because non-biodegradable waste can be recycled
- (b)
Because microorganisms cannot decompose it
- (c)
Because it is a solid waste
- (d)
All of the above
Garbage from the city is dumped at the____________
- (a)
park
- (b)
landfill
- (c)
roads
- (d)
empty plots
What happens to the landfill when it is completely full of useless components?
- (a)
The non-useful component is spread over the landfill.
- (b)
The full landfill is covered with a layer of soil
- (c)
It is converted into a park or a playground.
- (d)
All of these
What becomes of the useful components of garbage?
- (a)
Some of the useful components are converted into compost.
- (b)
Aluminium wrappers can be reused as metal
- (c)
Iron nails etc. are removed using cranes with magnets and reused.
- (d)
All of these.
Which of these can be reused again?
- (a)
plastics
- (b)
Metals
- (c)
glass
- (d)
all of these
Burning of dried leaves ls harmful because
- (a)
the smoke contains harmful gases.
- (b)
the particulate matter in the smoke remains suspended in air for a long time and is inhaled when we breathe this air.
- (c)
It causes eye irritation and watering of the eyes.
- (d)
All of these.
When we make use of earthworms or redworms for making compost, the process is called
- (a)
composting.
- (b)
manuring.
- (c)
fertilizing.
- (d)
vermicomposting.
What condition is required for the survival of earthworms in a vermicomposting pit?
- (a)
Earthworms need moisture around them.
- (b)
Earthworms cannot survive in very hot or very cold surroundings.
- (c)
The pit waste should not contain salt, oil, pickles, vinegar, etc
- (d)
All of these
Which one of these can be easily recycled?
- (a)
newspaper
- (b)
note-books
- (c)
glass bottles
- (d)
all of these
Plastics have become an important part of our life. They are now posing a big problem for us. This is because.
- (a)
we are using plastics excessively and irresponsibly
- (b)
we are ignorant about its proper waste disposal.
- (c)
plastics are non-biodegradable and cannot be converted into compost.
- (d)
all of these.
Plastic bags are often used for storing food. This is because
- (a)
they do not leak easily.
- (b)
they can be air-tight.
- (c)
they can be transparent and food can be easily seen without opening the bag.
- (d)
all of these.
Plastic can prove to be a nuisance if
- (a)
it is heated or burnt.
- (b)
stray animals can choke on plastic bags if they try to eat the food present in the thrown plastic bags
- (c)
they are thrown carelessly, they may choke the drains and spill dirty drain water on the road.
- (d)
all of these
Which of the following is in the interest of our environment?
- (a)
We should re-use plastic bags as much as possible but care should be taken while reusing plastic bags for storing eatables
- (b)
The use of plastic should be minimised.
- (c)
Plastic should never be burnt.
- (d)
All of these.
Till a matching and better environment-friendly substitute for plastics is found, we should use
- (a)
paper bags.
- (b)
cloth bags
- (c)
jute bags.
- (d)
all of these