Which of the following activities does not reflect responsible behaviour with regard to waste disposal?

1

(a)

Goods carried in paper bags or cloth bags

(b)

Waste collected in polythene bags for disposal

(c)

Waste separated into those that degrade and those that do not

(d)

Making handicrafts with used up notebooks

Hospital waste is usually infectious. Select the best way to .dispose them.

1

(a)

Recycled

(b)

Incinerated

(c)

Composted

The three Rs used in connection with reducing waste are

1

(a)

reduce, reuse, recycle

(b)

reduce, reserve, recycle

(c)

reduce, resell, redeem

(d)

revise, resell, reuse

Some materials present in waste can rot. This rotting is carried out by

1

(a)

microbes

(b)

insects

(c)

ants

(d)

Amoeba

Leaves falling from trees should be disposed by

1

(a)

burning

(b)

making compost by boiling and drying them

(c)

making compost by vermicomposting

(d)

None of the above

____________ is an area where the garbage is collected.

1

(a)

Landfill

Converting plant and animal wastes into manure is called __________

1

(a)

composting

We need to generate __________waste.

1

(a)

less

Method of making compost using _______________ is called vermicomposting.

1

(a)

redworms

Plastic wastes ____________ are as they do not _____________.

1

(a)

non-biodegradable, decompose

All components of garbage can be converted into compost.

1

(a) True

(b) False

Plastics are ecofriendly

1

(a) True

(b) False

Drains get choked by plastics thrown by us.

1

(a) False

(b) True

Redworms eat upon grasses, leaves and make it compost.

1

(a) False

(b) True

Plastics give out harmful gases upon heating or burning.

1

(a) False

(b) True

Name a kind of fuel which is made by decomposition of organic waste.

2

(a)

What could be useful garbage? Why is it thrown away in the first place? Is there some garbage that is not actually garbage?

2

(a)

Should the containers used for storing harmful substances be used to make plastic bags?

2

(a)

What food do the redworms eat?

2

(a)

How does the packaging increase the amount of garbage?

2

(a)

Do you think, it is better to use compost instead of chemical fertilisers? Why?

3

(a)

3R's are used as efficient means to reduce waste. What is meant by three R's in terms of waste disposal?

3

(a)

List some differentiating features between composting and vermicomposting.

3

(a)

Why should containers used for storing poisonous substances be recycled separately?

3

(a)

Suggest any two ways to minimise the harmful effects of plastics.

3

(a)

Municipality provides two types of dustbins for garbage collection. One blue coloured and one green coloured. Among the following wastes provided which, waste will you put in which dustbin?
Plastic materials, metal and glass items, waste of plants and animals, peels of fruits and vegetables, dried leaves and twigs, remains of meat like flesh and bones.

5

(a)

Precautions should be taken while storing cooked food items in plastic bags. Why?

5

(a)