Lakhmir singh solutions biology class 10 Solutions for Chapter 4 management of natural resources

Name the bacteria whose presence in water indicates the contamination with disease-causing micro-organisms.

The pH of a river water sample as measured by pH paper is found to be 6. What does it tell us about water?

State whether the following statement is true or false:

Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.

Choose one term from the following which include all others:

coal, natural gas, fossil fuels, petroleum

Name a clean gaseous fuel other than LPG and natural gas.

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 aims of management of forests and wildlife is to conserve the ________ which we have inherited.

(d) Khadin is a traditional ________ harvesting system in Rajasthan.

(e)When fuel burns in an insufficient supply of air, then some poisonous gas called ________ is also produced.

What is meant by “sustainable development”?

What is silviculture? What are its advantages?

Why should we conserve forests and wildlife?

What measures would you take to conserve electricity in your house?

Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why?

Is water conservation necessary? Give reasons.

What are the main uses of coal and petroleum products?

State any five steps to reduce the consumption of coal and petroleum products.

Explain why, despite good rains, we are not able to meet the demand for water of all the people in our country.

Give one example to show how the participation of local people can lead to the efficient management of forests.

Explain briefly, how rainwater harvesting is done from open spaces around the buildings in city areas

(a) State the advantages of constructing dams across the rivers.

(b) Describe some of the problems associated with the construction of dams

(a) Name any five sources of water (other than rivers).

(b) Describe how the water of the river Ganga has been highly polluted.

(a) Name the major industries which are based on forest produce.

(b) State the main aim of the management of forests and wildlife.

(c) Name the four main stakeholders in the management of forest resources.

The Bishnoi community of Rajasthan is associated with the conservation of:

(a) coal and petroleum

(b) forests and wildlife

(c) water resources

(d) abiotic environment

The Chipko Andolan is associated with:

(a) Tigers

(b) Turtles

(c) Trees

(d) Tomatoes

Amrita Devi Bishnoi was associated with :

(a) preventing the custom of child marriage in Rajasthan

(b) campaign to save the girl child

(c) conservation of the cultural heritage of Rajasthan

(d) conservation of forests and wildlife

The river water is said to be polluted with acidic wastes if the pH of river water is:

(a) zero

(b) above 7

(c) below 7

(d) exactly 7

The major programme started to replenish the damaged forests is called: (a) horticulture (b) tissue culture (c) agriculture (d) silviculture

With which tree Amrita Devi Bishnoi is associated?

(a) khajoor

(b) khejrali

(c) khejri

(d) keekar

One of the following does not contribute to producing acid rain. This one is:

(a) sulphur dioxide

(b) carbon dioxide

(c) nitrogen oxides

(d) carbon monoxide

The poisonous gas which reduces the oxygen-carrying capacity of blood to a large extent is:

(a) SO_2

(b) NO

(c) CO

(d) CO_2

Which of the following is not an ancient water harvesting structure?

(a) kattas

(b) sargam

(c) kulhs

(d) surangams

Snakes are killed in large numbers because:

(a) they are very poisonous

(b) they kill rats

(c) their skin is expensive

(d) they damage the crops

Which of the following is not a fossil fuel?

(a) LPG

(b) natural gas

(c) biogas

(d) CNG

Which of the following is not a natural resource?

(a) soil

(b) water

(c) electricity

(d) natural gas

The most rapidly dwindling natural resource in the world is:

(a) water

(b) soil

(c) sunlight

(d) forests

The main reason for the abundant coliform bacteria in the the water of river Ganga is :

(a) immersion of ashes of the dead into the river

(b) washing of clothes on the banks of the river

(c) discharge of industrial wastes into the river water

(d) disposal of unburnt corpses into the river water

The pH of a sample of water collected from a river is found to be in the range of 3.5 to 4.5. The most likely reason for this is the waste being discharged into the river from a :

(a) soap and detergent manufacturing factory

(b) car battery manufacturing factory

(c) alcohol manufacturing factory

(d) plastic cups moulding factory

Which of the following statement is incorrect?

(a) economic development is linked to environmental conservation

(b) sustainable development meets the current basic human needs and also preserves resources for future generations

(c) sustainable development does not take into consideration the viewpoints of all stakeholders

(d) sustainable development is a long-planned and persistent development

Groundwater will not be depleted due to:

(a) process of afforestation

(b) establishing thermal power plants

(c) process of deforestation

(d) cultivation of high yielding varieties of crops

Ahars, Kattas, Bhundhis, and Khadins are the modes of:

(a) grain storage

(b) soil conservation

(c) water harvesting

(d) cold storage

Which of the following combination of terms has no fossil fuel?

(a) wind, ocean, coke

(b) kerosene, tide, wind

(c) wood, wind, sun

(d) petrol, wood, sun

Khadins are used in Rajasthan to:

(a) hold water for irrigation

(b) recharge groundwater

(c) promote soil erosion

(d) trap wild animals