CBE Questions Chapter 16 Sustainable Management of Natural Resources Science Class 10
Hint: Identify the 5 R's (refuse, reduce, reuse, repurpose, recycle), in order to employ one of these methods to make environment-friendly choices.
Question.1. Which of these practices can be adopted to save the environment?
(a) refuse the use of single-use plastic bags
(b) reducethe use of paper bags
(c) recycle single-use bags
(d) reuse waste food
Question.2. A student studies that we should switch off unnecessary lights and fans in order to save the environment. How does switching off unnecessary electricalappliances help the environment?
(a) it reduces the wastage of energy
(b) it generates electricity when switched off
(c) it recycles the amount of energy used
(d) it increases the efficiency of the electrical appliances
Ans.1. (a) refuse the use of single-use plastic bags
Ans.2. (a) it reduces the wastage of energy
Hint: Explain sustainable development, in order to conserve natural resources for future generations.
Question.3. What is the main significance of sustainable development?
(a) to preserve the natural resources for the needs of the future generation
(b) to exploit the available resource for rapid improvement
(c) to increase the cost of available natural resources
(d) to increase the reservoirs of natural resources
Question.4. Which of these is an example of sustainable development in order to conserve natural resources for the future generation?
(a) cleaning water resources
(b) finding alternate fuel reservoirs
(c) clearing forests to set up new industries
(d) planning for safe disposal of wastes after mining
Ans.3. (a) to preserve the natural resources for the needs of the future generation
Ans.4. (d) planning for safe disposal of wastes after mining
Hint: Identify different stakeholders involved in a forest, in order to prepare a conservation plan for forests.
Question.5. Which of these would be identified as a stakeholder involved in a forest?
(a) industries who make ceramic products using clay
(b) industries who make papers using wood products
(c) industries who make clothes using synthetic materials
(d) industries who make devices that generate electricity using solar energy
Question.6. A student studies that conservation of forest is necessary to maintain ecological stability. This can only be maintained if forests are conserved. Which of these practices will help to conserve the forest?
(a) practice of deforestation
(b) putting a ban on deforestation
(c) an increase in use of firewood by local people
(d) an increase in use of forest product by industries
Ans.5. (b) industries who make papers using wood products
Ans.6. (b) putting a ban on deforestation
Hint: Explain the construction and use of dams and water harvesting, in order to devise an efficient plan to conserve water.
Question.7. Which of these explains the use of dams?
(a) to replenish underground water resources
(b) to provide irrigation and generate electricity
(c) to produce steady supply of water in hilly regions
(d) to provide water for conservation of biological diversity
Question.8. A student studies that construction of a water harvesting system in a region can help conserve water. How can construction of this system help a region?
(a) it will reduce the occurrence of droughts
(b) it will reduce the percolation of rainwater
(c) it will replenish surface water like rivers
(d) it will increase the speed of flow of surface runoff
Ans.7. (b) to provide irrigation and generate electricity
Ans.8. (a) it will reduce the occurrence of droughts
Hint: List down the disadvantages of using coal and petroleum as energy sources, in order to develop a better plan of generating energy.
Question.9. Which option explains the disadvantage of using fossil fuel as energy sources?
(a) it releases harmful gases into the atmosphere when they burn
(b) it is extracted from deep inside the Earth
(c) it uses oxygen in the process of burning
(d) it is hard to transport
Question.10. A student studies that using coal and petroleum as a source of energy emits carbon dioxide andash that pollutes environment. Which step should be adopted in order to save the environment?
(a) replace coal to firewood for cooking food
(b) replace petroleum to coal in vehicles for transportation
(c) replace thermal power with solar power to generateelectricity
(d) replace the use of coal to petroleum for melting metals in a furnace
Ans.9. (a) it releases harmful gases into the atmosphere when they burn
Ans.10. (c) replace thermal power with solar power to generate electricity