NCERT Solutions For Class 10 Science Chapter 15: Our Environment

The NCERT Solutions for Class 10 Science Chapter 15 Our Environment are provided in the article below. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students. The important topics that are included in this chapter are:

Expected no. of Questions: 2-3 questions of around 5 marks.

Download PDF: NCERT Solutions for Class 10 Science Chapter 15 Our Environment


NCERT Solutions for Class 10 Science Chapter 15

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Class 10 Science Chapter 15 Our Environment: Important Topics

The word environment originated from the French word “environ” which means surrounding. Thus, the environment can be defined as all the living and nonliving things that surround us and are responsible for nourishing the life that exists on earth. All the organisms, plants, human beings and natural resources such as water, soil, and physical interactions form an important aspect of our environment. Due to rising concerns such as global warming, pollution, deforestation and climate change, there is a need to conserve and protect our environment from further destruction.

  • Ecosystem

An ecosystem is referred to as a geographic area where plants, animals, and other organisms, even weather, and landscape, work together to form a life. Ecosystems comprise biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms.

  • Biodegradable and non-biodegradable substances

Biodegradable substances are substances that can be easily broken down by the action of bacteria. Other substances or materials like plastics, metallic cans, and pesticides that cannot be broken down easily by biological processes are named non-biodegradable substances.

Chapter Related Links:

Ecosystems Types of Ecosystem Components of the ecosystem
Food Web Food Chain Difference Between Food Chain and Food Web
Ozone Layer and How it is getting depleted Biodegradable and non-biodegradable substances Ozone Layer

Science Study Guides:

CBSE X Related Questions

  • 1.
    Juice of tamarind turns blue litmus to red. It is because of the presence of a chemical compound called:

      • Acetic acid
      • Methanoic acid
      • Oxalic acid
      • Tartaric acid

    • 2.
      Assertion (A) : In large animals, oxygen can reach different parts of the animal's body easily.
      Reason (R) : Respiratory pigments take up oxygen from the air and carry it to body tissues.

        • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
        • Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).
        • Assertion (A) is true, but Reason (R) is false.
        • Assertion (A) is false, but Reason (R) is true.
          {5pt}

      • 3.
        Write chemical equations to show what happens when an acid reacts with a:
        Write chemical equations to show what happens when an acid reacts with a:
        (i) Metal
        (ii) Base
        (iii) Carbonate
        Write the name of the main product formed in each case


          • 4.
            Identify from the following the ray diagram which shows the correct path of the reflected ray for the ray incident on a concave mirror as shown:
            path of the  reflected ray for the ray incident on a concave mirror


            • 5.
              Which one of the following is not an excretory product in plants?

                • \(CO_2\)
                • Starch
                • Resins and gums
                • Dead cells

              • 6.
                The water of crystallization is present in:
                (i) Bleaching Powder
                (ii) Plaster of Paris
                (iii) Washing Soda
                (iv) Baking Soda

                  • (ii) and (iv)
                  • (ii) and (iii)
                  • (i) and (iii)
                  • (i) and (iv)

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