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Lakhmir Singh & Manjit Kaur: Natural Resources, Solutions- 1 | Science Class 10 PDF Download

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Question 1:
Name two fossil fuels.
Solution :
Coal and Petroleum. 

Question 2:
Name the major programme started to replenish forests.
Solution :
Silviculture

Question 3:
Apart from the availability of forest products, name two other things which are affected by the destruction of forests.
Solution :
Quality of soil and sources of water.

Question 4:
Name the rivers with which the following dams are associated :
Name the rivers with which the following dams are associated :
(a) Tehri Dam
(b) Sardar Sarovar Dam
(c) Bhakra Dam
Solution :
(a) River Ganga.
(b) River Narmada.
(c) River Satluj.

Question 5:
Name two factors which can be used to find whether river water has been contaminated.
Solution :

  1. The presence of coliform bacteria in rainwater.
  2. Measurement of pH of rainwater.

Question 6:
Name the bacteria whose presence in water indicates the contamination with disease-causing micro-organisms.
Solution :
Coliform bacteria.

Question 7:
With which process are the following ancient structures associated ?
Kulhs, Eris, Surangams, Kattas, Pynes
Solution :
Rainwater harvesting.

Question 8:
Which fossil fuel is conserved :Which fossil fuel is conserved :
(a) when we save on electricity ?
(b) when we use bicycle for covering short distances instead of a motorbike ?
Solution :
(a) Coal.
(b) Petroleum.

Question 9:
What is the main purpose of rainwater harvesting ?
Solution :
The main purpose of rain water harvesting is to make rainwater percolate under the ground so as to recharge ground water.

Question 10:
What is the name of the process in which rainwater falling on the earth is stopped from flowing and made to percolate into the ground ?
Solution :
Rainwater harvesting.

Question 11:
Name the most common practice of recharging ground water.
Solution :
Rainwater harvesting.

Question 12:
The pH of a river water sample as measured by pH paper is found to be 6. What does it tell us about water ?
Solution :
Water is polluted with acidic wastes.

Question 13:
Name the person who is most remembered for the protection of Khejri trees in Rajasthan.
Solution :
Amrita Devi Bishnoi.

Question 14:
State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.
Solution :
False.

Question 15:
Write the full names of (a) CFL, and (b) CFC.
Solution :
(a) CFL – Compact Fluorescent lamps.
(b) CFC – Chloro-fluoro carbons.

Question 16:
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
Solution :
Fossil fuels

Question 17:
Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?
Solution :
The process of reuse is better than recycling because more energy is used to recycle old objects but no energy is required during reuse.

Question 18:
Name a clean gaseous fuel other than LPG and natural gas.
Solution :
Biogas.

Question 19:
Fill in the following blanks with suitable words :Fill in the following blanks with suitable words :
(a) LPG is a ……………fuel but biogas is not a…………. fuel.
(b) Glaciers are a source of…………………..
(c) One of the main aim of management of forests and wildlife is to conserve the……………….which we haveinherited.
(d) Khadin is a traditional………………………..harvesting system in Rajasthan.
(e) When a fuel burns in an insufficient supply of air, then some poisonous gas called ……………………….. is also produced.
Solution :
(a) Fossil; Fossil.
(b) Water.
(c) Bio diversity.
(d) Water.
(e) Carbon monoxide.

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FAQs on Lakhmir Singh & Manjit Kaur: Natural Resources, Solutions- 1 - Science Class 10

1. What are natural resources?
Ans. Natural resources are the various substances or materials that are found in nature and are useful to humans. They include air, water, sunlight, minerals, forests, and wildlife, among others.
2. Why are natural resources important?
Ans. Natural resources are important because they provide us with the necessary materials for survival and development. They are essential for various human activities like agriculture, industry, energy production, and transportation.
3. How can we conserve natural resources?
Ans. We can conserve natural resources by practicing sustainable consumption and production methods. This includes reducing wastage, recycling materials, using renewable sources of energy, and implementing efficient technologies.
4. What are some examples of renewable natural resources?
Ans. Renewable natural resources are those that can be replenished or regenerated over time. Examples include sunlight, wind, water, forests, and wildlife.
5. What are the consequences of overexploitation of natural resources?
Ans. Overexploitation of natural resources can lead to various negative consequences, such as depletion of resources, loss of biodiversity, soil erosion, climate change, and ecological imbalances. It can also have severe economic and social impacts on communities dependent on these resources.
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