Q7 of 22 Page 97

Read the items mentioned in Columns I and II and fill in the related process in the Column III

i. Vermicomposting


Organic wastes like kitchen wastes can be dumped into a pit and by using red worms can be converted into vermicompost and this process is called vermicomposting.


ii. Landfill


The non-biodegradable garbage is taken to low lying areas called landfills and non-useful garbage is filled in pits dug in these landfills.


iii. Recycling


Old newspaper, paper bags can be recycled in recycling units.


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5

A garbage collector separate items mentioned below in the garbage into red, green and blue containers for their transfer to landfill, composting pit, and recycling unit respectively. Items:

(i) Plastic bags


(ii) Newspaper and journals


(iii) Screw and nuts


(iv) Vegetable peels


(v) Metal chips


(vi) Egg shells


Which item were transferred to which bin?


 6

The steps required for conversion of kitchen garbage into manure are given below in a jumbled form. (i) Put garbage in a pit

(ii) Cover the bottom of the pit with sand


(iii) Cover the pit loosely with a gunny bag or grass


(iv) Add worms


Which of the following shows the correct sequence of the above steps?

 8

Correct the definitions of certain terms given below by changing only one word.

(i) Compost: Substances converted into manure for use in industries.


(ii) Landfill: Garbage buried under water in an area.


(iii) Recycling: Reuse of unused material in the same or another form.

 9

Provide the suitable term that expresses the meaning of each of the following statements.

(a) Greeting cards made from newspaper.


(b) Contents of the waste bins.


(c) Worms converting certain kinds of waste into manure.


(d) An area where a lot of garbage is collected, spread out and covered with soil.