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      • X Chemical Reaction and Equation
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      • X Electricity
      • X Magnetic Effects of Currents
      • X Source Of Energy
      • X Biology Term-1
        • 10th Life Process
        • 10th Control and coordination
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      • Carbon and Its Compounds
      • Periodic Classification of Elements
      • Light - Reflection and Refraction
      • The Human Eye and the Colourful World
      • X Biology Term-II
        • How Do Organisms Reproduce ?
        • Heredity and Evolution
        • Our Environment
        • Management of Natural Resource
    • 10th Maths Term I
      • X Real Numbers
      • X Polynomials
      • X Linear Equations in Two Variables
      • X Similar Triangles
      • X Trigonometry and Identities
      • X Statics(Mean,median and Mode)
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      • 10th Co-Ordinate Geometry
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      • IX Motion and Rest
      • IX Force and Laws of motions
      • IX Gravitation
      • IX Matter in our surrounding
      • IX Is Matter around Us Pure
      • IX Biology Term-1
        • Cell structure n function class9
        • Tissue class9
        • Improvement in food resources class9
    • 9th Science term II
      • Atoms and Molecules
      • Structure of the Atom
      • Thrust and Pressure
      • Work and Energy
      • Sound
      • IX Biology Term-2
        • Diversity in Living Organisms
        • Natural Resources
        • Why Do We Fall ill ?
    • 9th Maths term I
      • IX Number system
      • IX Polynomials
      • IX Introduction to Euclid Geometry
      • IX Lines and Angles
      • IX Triangles
      • IX Coordinate geometry
      • IX Area of triangles by Heron's formula
    • 9th Maths term II
      • Linear equations in two variables
      • Quadrilaterals
      • Area of Parallelogram and Triangle
      • Circle
      • Surface Areas and Volumes
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        • Cell structure and functions
        • Reproduction in animals
        • Reaching the Age of Adolescence
        • Conservation of plants and animals
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        • Rational Number
        • Square and Square Roots
        • Algebraic Expression
        • Factorization
        • Exponent and Power
        • Linear Equations
      • Commercial math
        • Unitary Methods
        • Percentage
        • Profit and Loss
        • Discounts & Sales Tax
        • Compound Interest
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Class 10 Chapter 15 -  Our Environment _ Study notes, solved Exam papers, CBSE Test paper with Solutions
Class 10 chapter Environment Study Notes
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Class 10 our Environment cbse solved Test paper -1
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Class 10 our Environment cbse solved Test paper -2
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Class 10 our Environment cbse solved Test paper -3
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Class  10 Our Environment  

10th Ch- Our Environment: Assignments

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10th  FA-3 Environment  Questions Paper

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10th Science:  Environment  HOTS Questions

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10th  Environment: Gist of Lesson

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Class 10 our environment and Management of Natural Resource board solved Questions 2016
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Questions from Recent CBSE Board paper
Q. How does concentration of a pesticide change once it enters a food chain.

Ans: Concentration of a pesticide increases once it enters a food chain.

Q. In an ecosystem, rats feed on grains. Name the trophic level to which the rats belong.

 Ans: Second trophic level

Q. What will be the consequences if all the carbon of all fossil fuel is converted into carbon dioxide ?

Ans: Amount of carbon dioxide in the atmosphere will increase leading to global warming.

Q. If all the wastes we generate is biodegradable, what effect will this have on the environment ? What value will be imbibed if people are made to understand that generation of waste should be restricted to be biodegradable only ?

Ans: (a) It will lead to eco friendly environment, waste product would be converted into re-usable form.

(b) Mutual respect to health and environment conservation.

Q. In a colony, it was decided to remove a green park and construct an air conditioned shopping mall. Children of the colony took out a march against this decision with several placards to make the colony people aware of the importance of green plants.

a. What are the ill effects of air conditioners?
b. Design two placards which the children would have carried?
c. Is the action taken by the children justified?
d. How does the ecosystem get affected when plants are removed?

 Ans:
a. They release CFCs that deplete ozone layer.

b. Green plants are our green lungs and water purifying systems.

c. Yes, they are trying to protect the environment.

d. Food chain is disrupted and drastic climatic changes occur. Major part of biota is lost.

Q. In a food chain comprising frogs, insects, birds and grass, which one of the organisms is likely to have maximum concentration of harmful non biodegradable chemicals in its body?

Ans: Bird
Chapter : Our Environment :- Value Based Questions with Solution

Q . It is often advised to stop our vehicles engine at red light and also to drive car / vehicles at constant speed.

Based on the above statement, answer the following question.

1. Which type of fuel is used in vehicles? Is it renewable or non renewable.  2. How can you contribute towards saving these fuels at your level?

Ans: Fossil fuel – non renewable

=> Traveling in Metro (MRTS) / Public transport

=>  Opting for CNG as a motor fuel instead of petrol & diesel.

 Associated Value : The learners will adopt all these fuel saving techniques in their life.

Q . Number of vultures is decreasing remarkably. Now days which is a matter of concern.

1. Vultures belong to which category of animal.  2. What is their role in nature to maintain ecological balance.

Ans: i. Scavenger   ii. Help in recycling in nature by eating dead animals.
 

Associated Value : The learners will be able to understand and participate in maintaining ecological Balance by not harming other creatures

Q .  Newspaper reports about the alarming increase in pesticides level in packed food items Some of states have even banned these food items.

1. What are the sources of these pesticides in these food items.  2. Name the biological phenomenon associated with accumulation of pesticide in the food chain.

Ans: 1. Chemicals (Pesticides, Fertilizers) used in agricultural practices.  2. Biological magnification.

 Associated Value : The learners will be able to apply rational approach while using such pesticides and  will be more careful towards using packaged food.

 Q . Ozone depletion / Ozone hole is a cause of concern now a days. 1. What are the causes of ozone depletion.  2. As students what steps will you advise to reduce ozone depletion.

Ans: 1. Chlorofluoro carbon (CFCs) released into atmosphere disintegrate the ozone molecule.

2. Stop using devices that release CFCs.

Associated Value : The learners will be more educated and will be more vigilant & judicious towards using equipments /chemical that produces CFCs in order to protect ozone layer.

 Q .  Acid rain is causing damage to monuments / Buildings etc. and also harm the flora and fauna.

1. What is the cause of acid rain.  2. What essential changes in our daily life can lie done to prevent acid rain / damage caused by acid rain.

Ans: 1. Oxides of Nitrogen & sulphur released from vehicular & industrial emissions on mixing with rain water produces acid rain.

2. Traveling in metro (MRTS) instead of fossil fuel driven vehicles.

Associated Value : The learners will adopt Eco-friendly lifestyle so that lesser amount of (No)x and (So)x released into atmosphere which are the main contribution factor causing Acid Rain.

Q .  Plastic production is increasing day by day in spite of the fact that plastic is harmful for the environment.  Based on the above statement answer the following.
1. What are the harmful effects of plastic usage?  2. In our day to day situation what are the alternatives that we can use instead of plastics.


Ans: Environmental pollution

Burning plastics can cause pollution

Plastic cause harm to the cattle / animals if enter inside their alimentary canal.

ii. Paper bags / jute bags can be used instead of plastic bag.

Any other relevant view of the student

Associated Value : The learners will be discouraged to use plastics as a source of packaging, storing as it is non biodegradable.


Q. With the help of an example show that ‘reuse’ strategy is better than ‘recycling’.

Ans:  Reuse strategy is better than recycling. For example, if plastics are sent for recycling, then they would
be subjected to melting; causing additional cost of machinery and an unnecessary strain on the  energy sources. Also it will lead to environmental pollution. These all factors are ignored during reuse e.g. using the plastic bottles again for drinking water will save the energy.

Q. Construct an aquatic food chain showing four trophic levels.

Ans: Hydrilla →Scorpio→ Fish → Crane


Q. To protect the food plants from insects, an insecticide was sprayed in small amounts but it was detected in high concentration in human beings. How did it happen?

As insecticides are not degradable, these get accumulated progressively at each tropic level. As human beings occupy the top level in any food chain, the high concentration of insecticide gets accumulated in their bodies. This phenomenon is known as biological magnification

                           10th Science SA-2 Chapter wise Test Papers Links

1. Carbon and Its Compounds                    

6. The Human Eye and the Colorful World

2. Periodic Classification of Elements

7. Our Environment                                   

3. How Do Organisms Reproduce?            

8. Management of Natural Resource

4. Heredity and Evolution

9. Science  Sample papers                            

5. Light - Reflection and Refraction          

10. X Science NCERT SOLUTIONS

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  • HOME
    • STUDY ZONE
    • Study Material
    • Think Zone
    • Board Papers Solutions
    • CBSE Board Date Sheet
    • Syllabus for Class I to XII
  • CLASS 10
    • 10th Science Term-I
      • X Chemical Reaction and Equation
      • X Acid Base and Salt
      • X Metals and Non Metals
      • X Electricity
      • X Magnetic Effects of Currents
      • X Source Of Energy
      • X Biology Term-1
        • 10th Life Process
        • 10th Control and coordination
    • 10th science Term II
      • Carbon and Its Compounds
      • Periodic Classification of Elements
      • Light - Reflection and Refraction
      • The Human Eye and the Colourful World
      • X Biology Term-II
        • How Do Organisms Reproduce ?
        • Heredity and Evolution
        • Our Environment
        • Management of Natural Resource
    • 10th Maths Term I
      • X Real Numbers
      • X Polynomials
      • X Linear Equations in Two Variables
      • X Similar Triangles
      • X Trigonometry and Identities
      • X Statics(Mean,median and Mode)
    • 10th Maths Term II
      • 10th Quadratic Equations
      • 10th Arithmetic Progressions
      • 10th Co-Ordinate Geometry
      • 10th Height and Distance
      • 10th Circles
      • 10th Area Related to Circles
      • 10th Surface Areas and Volumes
      • 10th Probability
      • 10th Constructions
    • 10th Social Science
      • 10th History and Geography
      • 10th Civics and Economics
    • 10th CBSE English
    • 10th Solved Assignments
  • CLASS 9
    • 9th Science term I
      • IX Motion and Rest
      • IX Force and Laws of motions
      • IX Gravitation
      • IX Matter in our surrounding
      • IX Is Matter around Us Pure
      • IX Biology Term-1
        • Cell structure n function class9
        • Tissue class9
        • Improvement in food resources class9
    • 9th Science term II
      • Atoms and Molecules
      • Structure of the Atom
      • Thrust and Pressure
      • Work and Energy
      • Sound
      • IX Biology Term-2
        • Diversity in Living Organisms
        • Natural Resources
        • Why Do We Fall ill ?
    • 9th Maths term I
      • IX Number system
      • IX Polynomials
      • IX Introduction to Euclid Geometry
      • IX Lines and Angles
      • IX Triangles
      • IX Coordinate geometry
      • IX Area of triangles by Heron's formula
    • 9th Maths term II
      • Linear equations in two variables
      • Quadrilaterals
      • Area of Parallelogram and Triangle
      • Circle
      • Surface Areas and Volumes
      • Constructions
      • Statistics
      • Probability
    • IX Social Science
      • 9th Social Science Term-1
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    • IX English and Hindi
    • CBSE ASL Corner
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      • Mathematics
      • Science
      • Science Practicals MCQ
      • Social Science
      • Hindi English and Sanskrit
  • CLASS 8
    • 8th Science
      • Class 8 Physics
        • Force Pressure and Frictions
        • Sound
        • Chemical Effects of Electric Current
        • Refraction of Light and Our Eyes
        • Some Natural Phenomenon
        • Stars and the Solar System
      • Class 8 Chemistry
        • Synthetic fibre and Plastics
        • Metals and Non-Metals
        • Combustion ,Flame and Fuel
        • Coal Petroleum, Natural Gases
        • Air and Water Pollution
      • Class 8 Biology
        • Crop Production and Management
        • Microorganisms friend and foe
        • Cell structure and functions
        • Reproduction in animals
        • Reaching the Age of Adolescence
        • Conservation of plants and animals
    • Class 8 Mathematics
      • Algebra
        • Rational Number
        • Square and Square Roots
        • Algebraic Expression
        • Factorization
        • Exponent and Power
        • Linear Equations
      • Commercial math
        • Unitary Methods
        • Percentage
        • Profit and Loss
        • Discounts & Sales Tax
        • Compound Interest
      • Geometry/Mensuration
        • Quadrilateral
        • Practical Geometry
        • Perimeter and Area
        • Data Handling
        • Introduction of Graphs
    • Class 8 Sample papers
      • 8th Question paper sa1
      • 8th Question paper sa2
  • CLASS 07
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