SolveIt is under development
SolveItNCERT · CBSE · NEET

NCERT Exemplar · Class 10 Science Management of Natural Resources

37 questions · 37 still being checked

Multiple Choice Questions 1–10 (part 1 of 5)

  1. Exercise 1

    From the list given below pick the item that is not a natural resource
    (a)
    Soil
    (b)
    Water
    (c)
    Electricity
    (d)
    Air

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (c)
    (c) Electricity. Soil, water and air occur in nature on their own; electricity is generated by converting other energy forms, so it is man-made, not a natural resource itself.

  2. Exercise 2

    The most rapidly dwindling natural resource in the world is
    (a)
    water
    (b)
    forests
    (c)
    wind
    (d)
    sunlight

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (b)
    (b) Forests. Rapid deforestation for farmland, timber and urban expansion depletes forest cover far faster than water, wind or sunlight are being used up.

  3. Exercise 3

    The most appropriate definition of a natural resource is that it is a substance/commodity that is
    (a)
    present only on land
    (b)
    a gift of nature which is very useful to mankind
    (c)
    a man-made substance placed in nature
    (d)
    available only in the forest

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (b)
    (b) A gift of nature very useful to mankind. Natural resources occur in nature itself, across land, water and air, and are not confined to any one habitat such as the forest.

  4. Exercise 4

    The main cause for abundant coliform bacteria in the river Ganga is
    (a)
    disposal of unburnt corpses into water
    (b)
    discharge of effluents from electroplating industries
    (c)
    washing of clothes
    (d)
    immersion of ashes

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (a)
    (a) Disposal of unburnt corpses into water. Human remains introduce faecal and intestinal bacteria directly into the river, raising the coliform count far above what industrial or laundry sources add.

  5. Exercise 5

    The pH of water sample collected from a river was found to be acidic in the range of 3.5\displaystyle 3.5 – 4.5\displaystyle 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?
    (a)
    Soap and detergent factory
    (b)
    Lead battery manufacturing factory
    (c)
    Plastic cup manufacturing factory
    (d)
    Alcohol distillery

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (b)
    (b) Lead battery manufacturing factory. Battery units discharge sulphuric acid in their effluent, which drives river water to the strongly acidic pH $\displaystyle 3.5$–$\displaystyle 4.5$ range recorded here.

  6. Exercise 6

    The pH range most conducive for life of fresh water plants and animals is
    (a)
    6.5\displaystyle 5 – 7.5\displaystyle 7.5
    (b)
    2.0\displaystyle 0 – 3.5\displaystyle 3.5
    (c)
    3.5\displaystyle 5 – 5.0\displaystyle 5.0
    (d)
    9.0\displaystyle 0 – 10.5\displaystyle 10.5

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (a)
    (a) $\displaystyle 6.5$ – 7.5. Freshwater plants and animals are adapted to near-neutral water; a pH far outside this band disrupts enzyme activity and gill function, harming aquatic life.

  7. Exercise 7

    The three R's that will help us to conserve natural resources for long term use are
    (a)
    recycle, regenerate, reuse
    (b)
    reduce, regenerate, reuse
    (c)
    reduce, reuse, redistribute
    (d)
    reduce, recycle, reuse

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (d)
    (d) Reduce, recycle, reuse. Cutting consumption, reprocessing waste into new material, and using articles again together stretch a finite resource over the longest possible time.

  8. Exercise 8

    Given below are a few statements related to biodiversity. Pick those that correctly describe the concept of biodiversity
    (i)
    Biodiversity refers to the different species of flora and fauna present in an area
    (ii)
    Biodiversity refers to only the flora of a given area
    (iii)
    Biodiversity is greater in a forest
    (iv)
    Biodiversity refers to the total number of individuals of a particular species living in an area
    (a) (i) and (ii)
    (b) (ii) and (iv)
    (c) (i) and (iii)
    (d) (ii) and (iii)

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (c)
    (c) (i) and (iii). Biodiversity is the variety of flora and fauna present in a region; a forest, with many species and habitats, shows greater biodiversity than simpler ecosystems.

  9. Exercise 9

    Among the statements given below select the ones that correctly describe the concept of sustainable development
    (i)
    Planned growth with minimum damage to the environment
    (ii)
    Growth irrespective of the extent of damage caused to the environment
    (iii)
    Stopping all developmental work to conserve the environment
    (iv)
    Growth that is acceptable to all the stakeholders
    (a) (i) and (iv)
    (b) (ii) and (iii)
    (c) (ii) and (iv)
    (d) (iii) only

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (a)
    (a) (i) and (iv). Sustainable development is planned growth causing minimum environmental damage, and is acceptable to all stakeholders -- not growth that ignores damage (ii) or halts all development (iii).

  10. Exercise 10

    In our country, vast tracts of forests are cleared and a single species of plant is cultivated. This practice promotes
    (a)
    biodiversity in the area
    (b)
    monoculture in the area
    (c)
    growth of natural forest
    (d)
    preserves the natural ecosystem in the area

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (b)
    (b) Monoculture in the area. Clearing a natural forest to grow one species destroys biodiversity and the natural ecosystem instead of preserving them.