CBSE Class 6 Science Chapter 16 Garbage In Garbage Out VBQs

Choose The Correct Answer.

Question. Hospital waste is generally:
a) Recycled
b) Incinerated
c) Dumped in landfill
d) Composted
Answer : B

Question. The earthworms used for composting are called:
a) Redworms
b) Blueworms
c) Greenworms
d) Whiteworms
Answer : A

Question. _____ is a non-biodegradable waste.
a) Plastic
b) Paper
c) Vegetable matter
d) Animal dung
Answer : A

Question. We can recycle __________
a) Glass
b) Metals
c) Plastic
d) All
Answer : D

Fill In The Blanks.

a). Solid waste is commonly called garbage.

b). Plastic is a non-biodegradable material.

c). Composting done by earthworms is called vermi-composting.

d). Blue dustbin is used for collecting non-biodegradable waste.

Write True Or False.

Question. Green dustbin is used for collecting non-biodegradable waste.
Answer  False

Question. Biomedical wastes are hazardous and infectious.
Answer : True

Question. A large, low lying area used to dispose off garbage is known as a dump. 
Answer : True

Question. Landfill site is ideal for making parks and playgrounds.
Answer : True

Match The Column ‘A’ With Column ‘B’. A B

Answer : (i) - (b), (ii) - (a), (iii) - (d), (iv) - (c), 

ACTIVITY- 1 : To observe and list the waste originated from your school and house for a week and record your observations.

Question. Vegetable peels are ______ waste. (Biodegradable/Non-biodegradable)
Answer : Biodegradable.

Question. Glass is a ______ waste. (Biodegradable/Non-biodegradable)
Answer : Non-Biodegradable.

Question. Plant leaves are ______ waste. (Biodegradable/Non-biodegradable)
Answer : Biodegradable.

ACTIVITY- To make compost pit in your school.

Question. Compost is rich in nutrients. (True/False)
Answer : True.

Question. We can use non-biodegradable waste in composting. (True/False)
Answer : False.

ACTIVITY- To prepare vermin-compost pit in your school.

Question. Vermi-composting is done by ____________.
Answer : Red worms.

Question. Kitchen waste (biodegradable waste) is used in vermin-composting. (True/False)
Answer : True.

ACTIVITY- To make your own recycled paper.

Question. We can also recycle glass and metals to useful product. (True/False)
Answer : True.

Question. The process of changing the waste and non-useable materials into useful material is called recycling. (True/False)
Answer : True.

Very Short Answer Type Questions.

Question.What is meant by dump?
Answer : A large, low lying area used to dispose off garbage is known as a dump.

Question. What type of garbage is collected in blue dustbin and green dustbin?
Answer : Blue dustbin :- Non-biodegradable,
Green dustbin :- Biodegradable.

Question. What is meant by recycling?
Answer : Recycling is the conversion of waste material in usable form.

Short Answer Type Questions.

Question. Distinguish between biodegradable and non-biodegradable waste.
Answer :

(ii) What is vermin-composting? How is it done?
Answer : The method of preparing compost with the help of earthworms is called vermi-composting. The redworms eat the bio-degradable waste material along with soil and convert it into compost. This is done in a pit.

Long Answer Type Questions.

(i) Explain how plastic is a boon?
Answer : Plastic containers are lightweight, flexible, low cost and water resistant. So, plastic containers have replaced the glass and metallic containers. The plastic bags are reusable and can be recycled. Plastic is used for making lightweight furniture, toys, lab equipments, syringes, bottles, boxes etc. Hence we can say that plastic is a boon.

(ii) List various methods of garbage disposal. Explain any one.
Answer : There are three important methods of disposal of garbage – Composting, Landfill and Incineration. Incineration- The process of burning of waste in specially designed furnaces is called incineration. Hospital waste is generally disposed off in this way. This method has some disadvantages too. This process produces harmful gases which pollute our environment.

(iii) Explain the 4R’s.
Answer : (1) Reuse- Reuse means to use again. Instead of throwing away an item we can use the item in various efficient ways. We can use empty jars and bottles as containers like pen stand, flower pot and storing things. We can reuse things after repair.
(2) Reduce- We should reduce the use of waste producing items.
(3) Recycle- Recycling is the conversion of waste material in usable form. We can recycle old newspaper into cardboard.
(4) Refuse- We should refuse to take plastic and polythene bags while shopping. We can use cloth-bag instead of polythene bag.