ICSE Class 10 Geography Goyal Brothers Solutions Chapter 19 Need and Method for Reducing, Reusing & Recycling Waste
Question 1.
State two methods for managing waste efficiently and properly.
Answer:
The two methods for managing waste efficiently and properly by the following ways:
- To reduce generation of waste resource.
- To find suitable ways to turn waste into wealth i. e. turn it into potential resource.
Hence the basic concept of 3R’s., i.e. Reduce, Reuse and Recycle plays the most important role in the modem waste management strategy.
Its aim is to generate minimum amount of waste and to extract maximum benefit from the waste generated or produced.
Question 2.
In what way can we reduce the generation of waste?
Answer:
We can reduce the generation of waste by the following ways:
(a) Change of Process :
By changing a modem method to make the best use of raw materials reduces the waste generation in industries.
In zinc electroplating chlorides are used in the process instead of using the sulphate salt in order to eliminate the production of cyanides.
(b) Waste Concentration :
By using scientific techniques such as precipitation and evaporation the amount of liquid waste can be reduced. Incineration can be used to get rid of inflammable wastes.
(c) Segregation of Waste :
First of all, non-hazardous waste are separated from hazardous waste rather than dumping them together. Then the small amount of hazardous waste can be treated. We can dispose of a large amount of non-hazardous waste in the traditional ways.
Question 3.
How can we utilize the household waste?
Answer:
Each individual should change his or her lifestyle in such a way as to reduce environmental pollution. It can be done by following ways:
- Use carry bags made of paper or cloth instead of polythene.
- Help more in pollution prevention than pollution control.
- Use eco-friendly products. ,
- Cut down the use of chlorofluorocarbons (CFCs) as they destroy the ozone layer. Do not use styrofoam cups that have chlorofluorocarbon (CFC) molecules in them which destroy ozone layer.
- Use the chemicals derived from peaches and plums to clean computer chips and circuit boards instead of CFCs.
- Use CFC-free refrigerators.
- Save electricity by not wasting it when not required because electricity saved is electricity generated without polluting the environment. For example, put on warm clothes rather than switching on a heater.
Question 4.
What substitutes would you suggest in place of plastic and polythene bags which are non-biodegradable?
Answer:
Reducing the use of harmful articles which are non- biodegradable like plastic and polythenes and replacing them by cloth bags or paper bags.
Question 5.
What is meant by 3 Rs? Explain with the help of appropriate examples.
Answer:
3 Rs are Reduction, Reuse and Recycling. It plays most important role in the modem waste management strategy. Its aim is to generate minimum amount of waste and to extract maximum benefit from the waste generate or produced.
Reduction means the least use of waste e.g. bigger packages will reduce the package material saved and so the waste. Reuse is economical and wise e.g. use washable mugs, washable table napkins etc.
Recycling means the profitable use of the domestic waste and industrial wastes, e.g. plastic bottles, bags and containers may be recycled. In the same way the scrap iron may be recycled by melting and purifying it.
Question 6.
How can you recycle paper?
Answer:
Paper Recycling: Waste Paper sometimes reused to make new paper through a process called Paper Recycling. Many different products result from paper recycling. For instance, new computer paper and stationary result from recycling used chipboard or boxboard. It is also used in manufacturing such building materials as insulation, plasterboard and roofing.
Goyal Brothers Prakashan Class 10 ICSE Geography Solutions