6th Grade > Biology
GARBAGE IN GARBAGE OUT MCQs
Total Questions : 93
| Page 2 of 10 pages
:
Garbage collectors accumulate all the garbage from the streets and dispose off it in garbage disposal landfills or garbage dumps.
:
Effects: 1 Mark each
Though plastic is easy and comfortable to use, it is very harmful in terms of health and environment.
Any five:
1. Polythene bags are one kind of plastics which are non-biodegradable and cause environmental pollution.
2. Plastics undergo a process known as photodegradation, in which they break down into smaller and smaller toxic particles.These particles contaminate soil and water and enter the food chain when eaten accidentally by animals like cows.
3. Plastic materials discarded into aquatic resources cause death of huge number of aquatic organisms.
4. Plastics in the form of polythene bags are also responsible for the clogging of drainage systems in cities and towns.
5. Plastics take several years to decompose.
6. Plastics are not suitable for storing cooked food as they emit harmful chemicals when they are exposed to high temperatures. Using plastics causes health problems.
7. Burning of plastics emits harmful gases which cause cancer in living beings.
:
Types: 1 Mark each
There are two types of garbage: dry waste or non-biodegradable waste, and wet waste or biodegradable waste.
Dry waste comprises of wastes like paper,metallic waste, plastic pieces, broken glass pieces, wooden blocks, waste rags, etc.
Wet wastes are usually organic and come from the kitchens. Things likefood leftovers, vegetable peels, fruit peels, and garden waste are all wet wastes.
:
Reasons: 1 Mark each
1.Compost is much easier to prepare.
2.Compost is environment-friendlywhereas fertilizers can harm our health as well as the environment.
3.Compost does not cause pollution.
Answer: Option A. -> True
:
A
Burning plasticis not an eco-friendlywastedisposal method.All kinds of plastics give out harmful gases when heated or burnt. These gases cause many health problems, including cancer.
:
A
Burning plasticis not an eco-friendlywastedisposal method.All kinds of plastics give out harmful gases when heated or burnt. These gases cause many health problems, including cancer.
Answer: Option B. -> Segregation
:
B
Waste materials should be always separated into recyclable and non-recyclable materials before disposal. This is done so that non-recyclable materials can be disposed appropriately and recyclable materials can be reused.
:
B
Waste materials should be always separated into recyclable and non-recyclable materials before disposal. This is done so that non-recyclable materials can be disposed appropriately and recyclable materials can be reused.
Answer: Option B. -> Plastics
:
B
Non-biodegradable wastes such as plastics, cloth, etc. are not converted into compost by red worms. Red worms can only convertorganic material into compost.
:
B
Non-biodegradable wastes such as plastics, cloth, etc. are not converted into compost by red worms. Red worms can only convertorganic material into compost.
Answer: Option A. -> False
:
A
Red worms cannot survive in very hot or very cold surroundings. Their skin is sensitive and can detect changes in surroundings quickly.
:
A
Red worms cannot survive in very hot or very cold surroundings. Their skin is sensitive and can detect changes in surroundings quickly.
Answer: Option A. -> Non-Biodegradable
:
A
Plastic is a non-biodegradable waste. It cannot be decomposed by microorganisms. This is one of the reasons why usage of plastics need to be avoided. Where possible, plastics need to be recycled.
:
A
Plastic is a non-biodegradable waste. It cannot be decomposed by microorganisms. This is one of the reasons why usage of plastics need to be avoided. Where possible, plastics need to be recycled.
Answer: Option D. -> All of the above.
:
D
Biodegradable materials are those which can be degraded by microbes.Paper, leaves and food can easily be converted into manure. So these are biodegradable.
:
D
Biodegradable materials are those which can be degraded by microbes.Paper, leaves and food can easily be converted into manure. So these are biodegradable.
Latest Videos
Latest Test Papers
Login With Google
Old way of Login
Login With Email