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CBSE Questions for Class 6 Biology Garbage In Garbage Out Quiz 1 - MCQExams.com
CBSE
Class 6 Biology
Garbage In Garbage Out
Quiz 1
Vermicomposting is the use of chemical fertilizers to improve the soil quality.
Is the above statement true or false?
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True
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False
Explanation
Vermicomposting involves the use of earthworms to convert the waste to manure which can improve the soil quality.
Hence the given statement is false.
Which of the following is added to the food of earthworms to help them grind the food?
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Powdered egg shells
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Salt
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Oil
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Plastic
Explanation
Redworms do not have teeth. They have a structure called gizzard, which helps them in grinding their food. Powdered egg shells or sea shells could be mixed with the wastes. This would
help redworms in grinding their food.
Hence the correct option is A.
Wastes containing salt, pickle, and oil is beneficial for the growth of earthworms. Is the given statement true or false?
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True
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False
Explanation
Wastes containing salts, pickles, oil, vinegar, etc are not beneficial for earthworms. These wastes lead to the growth of disease-causing organisms.
Hence, the given statement is false.
Which of the following is not true about redworms?
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They are a type of earthworm
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They help in vermicomposting
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They have teeth for grinding the food
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They require moist conditions
Explanation
Redworms are a type of earthworms that are used in vermicomposting. They grow well in moist soil. They do not have teeth. They have specialized structures called gizzards for grinding food.
Hence the correct option is C.
Why are powdered egg shells added to the food of redworms?
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They help in moistening the soil
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They help them to grind the food
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They are required for their reproduction
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None of these
Explanation
Redworms do not have teeth. They have a structure called gizzard, which helps them in grinding their food. Powdered egg shells or sea shells could be mixed with the wastes. This would
help redworms in grinding their food.
Hence the correct option is B.
Recycling involves the conversion of discarded paper into useful items.
Is the above statement true or false?
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True
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False
Explanation
Recycling of paper involves the use of old newspapers, magazines, used envelopes, creatively to produce usable artifacts.
Hence the given statement is true.
Recycling of waste must be discouraged.
Is the above statement true or false?
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True
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False
Explanation
Recycling of paper helps in limiting the amount of garbage formed and hence must be encouraged.
Hence the given statement is false.
Any waste material can be recycled.
Is the above statement true or false?
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True
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False
Explanation
The given statement is false. Only those waste products that do not degrade such as paper and plastic can be recycled.
It is difficult to imagine a life without plastic as it is used to make a lot of things.
Is the above statement true or false?
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True
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False
Explanation
Plastic is present everywhere around us and it is used to make several items that we use daily.
Hence the given statement is true.
Plastic must be discarded by burning.
Is the above statement true or false?
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True
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False
Explanation
Plastics must not be burned as the inhalation of gases released can cause several health problems including cancer.
Hence the given statement is false.
All types of plastics can be recycled.
Is the above statement true or false?
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True
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False
Explanation
Only some type of plastics can be recycled and not all of them. Some plastics can rot whereas others such as polythene bags do not rot and must be recycled.
Hence the given statement is false.
How can you reduce the amount of waste generated?
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Eating less food
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Recycling paper
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Both A and B
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None of these
Explanation
Recycling of paper wastes helps in reducing the bulk of weight produced. The excess paper can be used creatively.
Hence the correct option is B.
Which of the following items can be recycled?
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Kitchen waste
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Paper
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Plant waste
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Animal waste
Explanation
Paper can be recycled to create useful items from old and discarded paper. Kitchen waste, plant and animal wastes cannot be reused and the rot.
Hence the correct option is B.
Recycling of paper increases the bulk of garbage.
Is the above statement true or false?
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True
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False
Explanation
The given statement is false. Recycling of paper wastes help in reducing the amount of garbage being produced.
How can you reduce the amount of paper wastes?
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By recycling paper
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Making hats/bags from waste paper
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Avoid wastage
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All of the above
Explanation
The amount of paper waste formed can be reduced by recycling, minimising wastage and by creating products from waste paper.
Hence the correct option is D.
Plastics create a problem for us because
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Use of recycled plastic to store food is harmful
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Burning of plastic may cause cancer
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Careless disposal may lead to blocks in sewage
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All of the above
Explanation
Even though plastic has numerous uses, their improper use and disposal causes a lot of problems. Storing food in plastic bags may lead to poisoning. Gases released by burning plastic is extremely dangerous. The careless disposal of plastic into drains and sewers may lead to blocks.
Hence the correct option is D.
Recycling of plastic is one good way of treating plastic wastes.
Is the above statement true or false?
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True
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False
Explanation
Since most of the plastics do not rot, they can be recycled and put to use efficiently.
Hence the correct option is A.
Which of the following is not an efficient way to deal with plastic waste?
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Recycling
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Throwing away garbage in plastic bags
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Minimizing the use
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Use of cloth bags
Explanation
Throwing away garbage in plastic bags in not a healthy practice as plastic does not degrade and hence it remains as such. Moreover its burning also produces harmful gases.
Hence the correct option is B.
How can we eliminate plastic waste?
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Minimizing the use
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Recycling
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Use of cloth bags
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All of these
Explanation
Since plastics do not degrade, they tend to accumulate on the Earth and hence must be reduced. All the mentioned methods are efficient ways to reduce the amount of plastic waste being formed.
Hence the correct option is D.
Any type of paper can be selected for recycling.
Is the above statement true or false?
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True
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False
Explanation
Old newspapers and magazines, used envelopes, etc can be recycled. However shiny plastic coated papers are not used.
Hence the given statement is false.
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