Question
Classify the following as biodegradable and non-biodegradable materials:
Woollen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying pan handle.

Answer

A material which gets decomposed through natural processes, such as action by bacteria, is called biodegradable.
Following are the biodegradable materials:
Woollen clothes, paper, peels of vegetables and fruits, Cotton cloth and Jute bag.
A material which is not easily decomposed by natural processes is termed as non-biodegradable. Following are the non-biodegradable materials: Polythene bags, Aluminium cans, Toothbrush, Electric switch and Frying pan handle.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Explain why, an owl can see well in the night (but not during the day) whereas an eagle can see well during day (but not at night).
Anjali's grandfather was talking to her about the quality of sound produced by different musical Instruments. The instruments like sitar, harmonium, flute, etc., give us a pleasant sensation of hearing. The dholak on the other side creates a noise.
(i) Mention the name of the vibrating part of sitar.
(ii) Briefly explain how the loudness is created by dholak?
(ili) We hear a shrilling sound by flute. Explain why?
(iv) Mention the values displayed by Anjali's grandfather.
Explain why, people are advised to use iodized salt in cooking food.
Complete the word puzzle.
Down:
$1.$ Species on the verge of extinction.
$2.$ A book carrying information about endangered species.
$5.$ Consequence of deforestation.
Across:
$1.$ Species which have vanished.
$3.$ Species found only in a particular habitat.
$4.$ Variety of plants, animals and microorganisms found in an area.
What is meant by the chemical effect of electric current? Explain with the help of an example.
How can we say that fish exhibits external fertilisation?
We have four coils, of similar shape and size, made up from iron, copper, aluminium, and nichrome as shown in the Figure:
Image
When current is passed through the coils, compass needles placed near the coils will show deflection.
(i) Only in circuit (a)
(ii) Only in circuits (a) and (b)
(iii) Only in circuits (a), (b), and (c)
(iv) In all four circuits
In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this.
Hold a magnifying glass over the text and identify the distance at which you can see the text bigger than they are written. Now move it away from the text. What do you notice? Which type of lens is a magnifying glass?
Describe how, curd is made from milk. Name the bacterium which converts milk into curd.