The red worms:
- AHave teeth to grind their food.
- ✓Do not have teeth to grind their food.
- CNeed not grind their food.
- DSwallow their food.
Answer: B.
View full solution →Question types
Garbage In, Garbage Out question types
310 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
310
Questions
9
Question groups
5
Question types
01
[1 Marks Each] M.C.Q.
160 Q→02Assertion (A) & Reason (B) MCQ
5 Q→03[1 Marks Each] Blanks
7 Q→04True Or False.[1 Marks Each]
10 Q→05[1 Marks Each] QUE - ANS
70 Q→06[3 Marks Each] QUE-ANS
24 Q→07[5 Marks Each] QUE-ANS
12 Q→08case /data -based (4 Marks)
2 Q→09Answer The Following Questions In Short.[2 Marks Each]
20 Q→Sample Questions
Garbage In, Garbage Out questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Observe some of these items given below.
Which of these items cannot be recycled?
Which of these items cannot be recycled?
- A$P$
- ✓$Q$
- C$R$
- D$S$
Answer: B.
View full solution →Which of the set of items not good for making compost?
- APlastic paper, tin foil, wrappers
- BBroken plastic toys, polythene bags, pieces of clothes
- ✓Egg shells, vegetable and fruit peels and tea leaves
- DAluminium wrappers, plastic bags and dry leaves
Answer: C.
View full solution →The red worms used in vermi composting need food like:
- ADead worms.
- BPlastic bags.
- CBroken toys.
- ✓Vegetable and fruit wastes.
Answer: D.
View full solution →A material $X$ is biodegradable, can be recycled and is non toxic and very useful. What is $'X'?$
- AGlass bottle.
- BPlastic bottle.
- CMetal can.
- ✓Paper.
Answer: D.
View full solution →DIRECTIONS: The questions in this segment consists of two statements, one labelled as? Assertion $A?$ and the other labelled as? Reason $R?$. You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): We develop some compost making areas near the landfill.
Reason (R): It is done to utilize some of the useful components of garbage.
Assertion (A): We develop some compost making areas near the landfill.
Reason (R): It is done to utilize some of the useful components of garbage.
- ✓Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
- BBoth $A$ and $R$ are true but $R$ is not the correct explanation of $A$
- C$A$ is true but $R$ is false
- D$A$ is false but $R$ is true
Answer: A.
View full solution →DIRECTIONS: The questions in this segment consists of two statements, one labelled as? Assertion $A?$ and the other labelled as? Reason $R?$. You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): After a landfill site is completely filled with garbage it is converted into a park.
Reason (R): At a landfill site that has been converted into a park, no building is allowed to be constructed for next 50 years.
Assertion (A): After a landfill site is completely filled with garbage it is converted into a park.
Reason (R): At a landfill site that has been converted into a park, no building is allowed to be constructed for next 50 years.
- ABoth $A$ and $R$ are true and $R$ is the correct explanation of $A$
- BBoth $A$ and $R$ are true but $R$ is not the correct explanation of $A$
- ✓$A$ is true but $R$ is false
- D$A$ is false but $R$ is true
Answer: C.
View full solution →DIRECTIONS: The questions in this segment consists of two statements, one labelled as? Assertion $A?$ and the other labelled as? Reason $R?$. You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): You are advised never to bum the dry leaves.
Reason (R): They produce harmful gases when burnt.
Assertion (A): You are advised never to bum the dry leaves.
Reason (R): They produce harmful gases when burnt.
- ✓Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
- BBoth $A$ and $R$ are true but $R$ is not the correct explanation of $A$
- C$A$ is true but $R$ is false
- D$A$ is false but $R$ is true
Answer: A.
View full solution →DIRECTIONS: The questions in this segment consists of two statements, one labelled as? Assertion $A?$ and the other labelled as? Reason $R?$. You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): Garbage contains plastics, metal containers and other wrapping materials.
Reason (R): Useful and non-useful components are separated out from the garbage at landfill site after spreading the garbage over landfill site.
Assertion (A): Garbage contains plastics, metal containers and other wrapping materials.
Reason (R): Useful and non-useful components are separated out from the garbage at landfill site after spreading the garbage over landfill site.
- ABoth $A$ and $R$ are true and $R$ is the correct explanation of $A$
- BBoth $A$ and $R$ are true but $R$ is not the correct explanation of $A$
- ✓$A$ is true but $R$ is false
- D$A$ is false but $R$ is true
Answer: C.
View full solution →DIRECTIONS: The questions in this segment consists of two statements, one labelled as? Assertion $A?$ and the other labelled as? Reason $R?$. You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): Vermicomposting is done with the help of blue worms.
Reason (R): We can recycle paper to get useful products.
Assertion (A): Vermicomposting is done with the help of blue worms.
Reason (R): We can recycle paper to get useful products.
- ABoth $A$ and $R$ are true and $R$ is the correct explanation of $A$
- BBoth $A$ and $R$ are true but $R$ is not the correct explanation of $A$
- C$A$ is true but $R$ is false
- ✓$A$ is false but $R$ is true
Answer: D.
View full solution →Some of the materials in the garbage rots to form $.........$.
View full solution →Fill in the blanks with appropriate words:
Municipal solid waste is commonly called $.........$.
View full solution →Municipal solid waste is commonly called $.........$.
Fill in the blanks with appropriate words:
Converting plant and animal wastes into manure is called $.........$.
View full solution →Converting plant and animal wastes into manure is called $.........$.
Fill in the blanks with appropriate words:
$.........$ is an area where the garbage is collected.
View full solution →$.........$ is an area where the garbage is collected.
Fill in the blanks with appropriate words:
We need to generate $.........$ waste.
View full solution →We need to generate $.........$ waste.
We never throw rubbish or garbage fron our homes, school, shops and offices. True/ False.
Burning of any substances causes air pollution. True/ False.
Plastics give out harmful gases on heating or burning. True/ False
Paper can be recycled to get useful products. True/ False.
Redworms eat upon green leaves on trees and make compost. True/ False
Why is it harmful to burn leaves?
Name the area of land where garbages are collected or dumped, the area is later converted into a park.
Can we recycle paper?
What is reuse?
Answer the following questions in one or two words or sentences:
Why should we prefer to use paper bags rather than polythene bags?
Why should we prefer to use paper bags rather than polythene bags?
The pie charts $A$ and $B$ shown in Fig. are based on waste segregation method adopted by two families $X$ and $Y$ respectively.
Which of the two families $X$ or $Y$ do you think is more environmentally conscious and why?
View full solution →Which of the two families $X$ or $Y$ do you think is more environmentally conscious and why?
Why do rag-pickers always seem to suffer from some disease or the other?
How do redworms convert the waste into compost in a compost pit?
How can you reduce the use of plastics?
Beera, a farmer would clear his field everyday, and burn dry leaves fallen on the ground. After sometime he found that those living in huts near his field were suffering from cough and breathing problems.
- Can you explain why?
- Also suggest an environment friendly way to dispose the dry leaves.
What can we do to minimise overuse of plastics and deal with garbage?
Describe steps involved in recycling a paper.
Beautiful hand crafted articles like boxes and toys are made of paper pulp in our country. Can you explain how paper pulp which is made from paper can be used to make hard boxes and other articles?
Think some handicraft materials which are prepared by waste materials. Construct them with the help of your teacher and friends.
Have a discussion about the uses and harmful effects of plastics in our daily lives.
Vermicomposting is a process of recycling degradable waste.
Earthworms breakdown the waste into compost that can be use as manure.
The diagram shows the details of the process.
$8.$ Which of these statements is true about vermicomposting?
$A.$ It breaks down waste naturally.
$B.$ It produces harmful substances.
$C.$ It requires the presence of light.
$D.$ It takes place in the absence of oxygen
$9.$ Why does vermicomposting require moist condition and moderate temperatures?
__________________________________________________________________________________________________________________________________________________________
$10.$ Which of these is true for the excess water obtained from vermicomposting?
$A.$ It contains earthworms.
$B.$ It is rich in mineral nutrients.
$C.$ It contains vegetable waste.
$D.$ It does not contain microorganisms.
View full solution →Earthworms breakdown the waste into compost that can be use as manure.
The diagram shows the details of the process.
$8.$ Which of these statements is true about vermicomposting?
$A.$ It breaks down waste naturally.
$B.$ It produces harmful substances.
$C.$ It requires the presence of light.
$D.$ It takes place in the absence of oxygen
$9.$ Why does vermicomposting require moist condition and moderate temperatures?
__________________________________________________________________________________________________________________________________________________________
$10.$ Which of these is true for the excess water obtained from vermicomposting?
$A.$ It contains earthworms.
$B.$ It is rich in mineral nutrients.
$C.$ It contains vegetable waste.
$D.$ It does not contain microorganisms.
The table shows different bins used to collect different types of wastes
.
$1.$ The waste from which bin is suitable for composting?
$A.$ Orange
$B.$ Red
$C.$ Green
$D.$ Blue
$2.$ A children’s park has only green and blue bins.
In which bin should empty juice cans be dumped? Explain your answer.
$3.$ Why should we recycle materials?
Circle $‘Yes’ $ or $‘No’$ for the correct response.
$4.$ Why is burning of crop residue harmful?
$5.$ WWhich of these is an example of reducing waste at home?
Circle $‘Yes’$ or $‘No’ $ for the correct response.
$6.$ Why should plastic waste not be dumped in landills?
$A.$ It has a low melting point.
$B.$ It does not degrade over time.
$C.$ It reacts with some vegetable wastes.
$D.$ It produces harmful gases on burning.
$7.$ Should plastic waste be dumped in water bodies? Explain your answer.
View full solution →.
$1.$ The waste from which bin is suitable for composting?
$A.$ Orange
$B.$ Red
$C.$ Green
$D.$ Blue
$2.$ A children’s park has only green and blue bins.
In which bin should empty juice cans be dumped? Explain your answer.
$3.$ Why should we recycle materials?
Circle $‘Yes’ $ or $‘No’$ for the correct response.
| Why do we recycle materials? | $Yes$ or $No$ |
| To save natural resources | $Yes/No$ |
| To make products stronger | $Yes/No$ |
| To create beautiful products | $Yes/No$ |
$5.$ WWhich of these is an example of reducing waste at home?
Circle $‘Yes’$ or $‘No’ $ for the correct response.
| Will this reduce waste? | $Yes$ or $No$ |
| Buying use-and-throw pens | $Yes/No$ |
| Using old cloth to make grocery bags | $Yes/No$ |
| Reusing cookie jars to store sugar | $Yes/No$ |
$A.$ It has a low melting point.
$B.$ It does not degrade over time.
$C.$ It reacts with some vegetable wastes.
$D.$ It produces harmful gases on burning.
$7.$ Should plastic waste be dumped in water bodies? Explain your answer.
Write two hazards of waste accumulation.
How can you make a vermicomposting pit?
What are domestic wastes? Give some examples.
Which kind of garbage is not converted into compost by the redworms?
Which one is the better to use- compost or chemical fertilisers?
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