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Natural Resourc...

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  • Question 1
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    Read the statements given below and choose the correct option (F = False, T = True).

    (a) Forests influence climate, water cycle and air quality.
    (b) In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation.
    (c) The forest keeps on growing and changing and can regenerate.
    (d) Forests protect the soil from erosion.

  • Question 2
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    Match the following:

    Column I Column II
    (a) Decomposers (i) Dead plant and animal tissues
    (b) Canopy (ii) Habitats for wild life
    (c) Porcupine (iii) Microorganisms
    (d) Humus (iv) Wild animal
    (e) Forest (v) Branches of tall trees

  • Question 3
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    Read the statements given below and choose the correct option.

    Statement 1: Nothing goes waste in a forest.
    Statement 2: Forests provide us wood, gum, medicinal plants and many more things.

  • Question 4
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    Refer to the figure given below:



    Choose the incorrect statement from the options given below:

  • Question 5
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    Read the following statements with reference to soil:

    (i) Weathering is a very fast process of soil formation.
    (ii) Percolation of water is faster in sandy soils.
    (iii) Loamy soil contains only sand and clay.
    (iv) Top soil contains the maximum amount of humus.

    Which of the above statements are correct?

  • Question 6
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    Read the following statements and give appropriate terms for each of them:

    (a) The process of breakdown of rocks by the action of wind, water, sunlight
    (b) Removal of topsoil during heavy rains or strong winds
    (c) Accumulation of wastes in the soil generated by human activity, which alters the features of soil
    (d) The process of movement of water into deeper layers of soil

  • Question 7
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    Refer to the diagram given below:



    The experimental set up shown above is used to

  • Question 8
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    Directions For Questions

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    Oxygen concentrations of two areas, A and B, were plotted to obtain a bar-graph. Which of the following sentences can be concluded from the above bar graph?

  • Question 9
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    Directions: In this question, two statements are given. Read both the statements and select the correct option accordingly.

    Statement 1: Saprophytes play an important role in recycling of nutrients.
    Statement 2: Saprophytes feed on living animals.

  • Question 10
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    Directions For Questions

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    Refer to the above diagram and choose the incorrect statement from the following:

  • Question 11
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    Observe the following statements about the availability of water on the earth and identify the correct option regarding their accuracy.

    I. Nearly 97% of the earth's surface is covered with water.
    II. Almost 71% of the available water on earth is saline.
    III. All living beings require water for their sustenance.
    IV. All the terrestrial and many of the aquatic life forms cannot survive on water from the seas and oceans.

  • Question 12
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    In the given picture A, B, C and D represent the various sources of water on earth. In context to the relative proportion of water they hold, identify the incorrect statements about A, B, C and D.



    I. 'A' represents the water in the oceans and 'B' represents the water in the rivers.
    II. 'C' represents the water in the rivers and lakes, and 'D' represents the groundwater.
    III. 'B' represents the fresh water and 'D' represents the water in the rivers and lakes.
    IV. 'C' represents the groundwater and 'D' represents the water in the rivers and lakes.

  • Question 13
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    Read the following passage and select the correct option to fill up the blank spaces.

    The __(i)__ of water from surface of the earth to the __(ii)__ and then back to the earth is called the water cycle. As a result of the water cycle, water content of the __(ii)__ is maintained at a constant level. Water vapour is formed as a result of __(iii)__ from the oceans, lakes and seas, __(iv)__ from plants, respiration and combustion of fuels. The water vapour rises up in the atmosphere and comes in contact with cold air. On cooling, it __(v)__ to form tiny droplets of water, which together form clouds.

  • Question 14
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    Analyse the two statements given below and select the correct option.

    Statement I: It is easier to install a hand pump in the northern plains, but it takes a heavy drilling machine to install a tube well in the plateaus.
    Statement II: Water table is usually higher in the plains but is very low in the plateaus.

  • Question 15
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    Rainwater and the water from water bodies on Earth`s surface pass through the soil by the process of __X___, which then gets accumulated in the ____Y_____ deep under the ground.

    Select the most suitable choices for X and Y.

  • Question 16
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    The roles of scrapers and skimmers in the sedimentation tank, respectively, are

  • Question 17
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    Observe the given flow chart and identify P, Q and R.

  • Question 18
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    Which of the following is a method to reduce the water loss during irrigation?

  • Question 19
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    Activated sludge contains ____ water.

  • Question 20
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    Study the flow chart given below, in which 'P' and 'Q' are the devices used to separate the insoluble waste from the sedimentation tank and 'R' and 'S' are the products of treatment of sludge by microbes. Identify P, Q, R and S.

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