Tuesday, 20 March 2012

NTSE Sample Questions based on Land, Soil, Water, Natural Vegetation and Wildlife Resources (Class VIII)


Q.1. The use of land is determined by factors such as
(i) topography     (ii) Soil        (iii) Climate        (iv) minerals          (v) availability of water

(A) (i),(ii) & (iii) are correct                                           (B) (i), (ii), (iii) & (iv) are correct  
(C) (ii), (iii), (iv) and (v) are correct                               (D) All are correct

Q.2. Match the following –
Name of the Country             Percentage of land area in Forest
(a) Australia                                    (i) 67
(b) Brazil                                        (ii) 31
(c) Russia                                        (iii) 22
(d) India                                         (iv) 14
(e) Japan                                         (v)  66
(f) World                                        (vi) 44

(A) a-(v), b-(iv), c-(i), d-(iii), e-(vi), f-(ii)                     (B) a-(ii), b-(v), c-(vi), d-(iv), e-(iii), f-(i)
(C) a-(iv), b-(v), c-(vi), d-(iii), e-(i), f-(ii)                      (D) a-(v), b-(vi), c-(i), d-(ii), e-(iii), f-(iv)

Q.3. What is/are the major threats to the environment because of the expansion of agriculture and construction activities ?

(i) Land degradation                    (ii) Landslides                     (iii) Soil erosion            (iv) Desertification

(A) (i),(ii) & (iii) are correct                                           (B) (i), (iii) & (iv) are correct  
(C) (ii), (iii) are correct                                                   (D) All are correct

Q.4. What can be some of the common methods to conserve land resources –
(i) Afforestation                                                                          (ii) Land Reclamation                  
(iii) Regulated use of chemical pesticide and fertilizers            (iv) Check on overgrazing

(A) Only (i) is correct        (B) (i) and (iv) are correct   (C) (i), (ii) and (iii) are correct   (D) All are correct

Q.5. Identify the Natural Hazard, according to the given description –
(i) Mass movement of rock, debris or earth down a slope.
(ii) They often take place in conjunction with earthquakes, floods and volcanoes.
(iii) A prolonged spell of rainfall can cause this and these can block the flow of river for quite some time.
(iv) In the hilly terrain these have been a major and widely spread natural disaster that often strike life and property and occupy a position of major concern.

(A) Floods                     (B) Landslides                   (C) Avalanche                    (D) Glacier movements

Q.6. Arrange the following in the correct sequence of Soil Profile –
(i) Weathered rock material                                            (ii) Sub soil with sand, silt and clay
(iii) Top soil with humus and vegetation                       (iv) Parent rock

(A) (iii), (ii), (i) and (iv)                                                 (B) (iv), (ii), (i) and (iii)
(C) (iii), (i), (iv) and (ii)                                                 (D) (ii), (i), (iii) and (iv)

Q.7. Match the following major factors of soil formation and their role -
(a) Parent Rock                              (i) Influence rate of weathering and humus
(b) Relief                                        (ii) Determines thickness of soil profile
(c) Flora, Fauna &
     Micro-organism                        (iii) Determines colour, texture, chemical properties
                                                              Mineral, content, permeability
(d) Time                                     (iv) Affects the rate of humus formation
(e) Climate                                  (v) Determine accumulation of soil

(A) a-(iii), b-(iv), c-(v), d-(i), e-(ii)                     (B) a-(ii), b-(v), c-(i), d-(iv), e-(iii)
(C) a-(iii), b-(v), c-(iv), d-(ii), e-(i)                     (D) a-(v), b-(iv), c-(iii), d-(ii), e-(i)

Q.8. Match the following-
      
(a) Mulching                          (i) Broad flat steps or terraces are made on the steep slopes so that
                                                   Flat surfaces are available to grow crops. They reduce surface
                                                   Run-off and soil erosion.
(b) Contour Barriers              (ii) Ploughing parallel to the contours of a hill slope to form a natural
                                                    Barrier for water to flow down the slope.
(c) Rock Dam                       (iii) Different crops are grown in alternate rows and are sown at
                                                    Different times to protect the soil from rain wash
(d) Terrace Farming              (iv) In the coastal and dry regions, rows of trees are planted to check
                                                     The wind movement to protect soil cover.
(e) Intercropping                   (v) Bare ground between plants is covered with a layer of organic matter,
                                                     Helps in retain soil moisture.
(f) Contour Ploughing          (vi) Stones, grass, soil are used to build  barriers along contours. Trenches
                                                    Are made in front of the barriers to collect water.
(g) Shelter belt                      (vii) Rocks are piled up to slow down the flow of water. This prevents
                                                     Gullies and further soil loss.
(A) a-(v), b-(vi), c-(vii), d-(i), e-(iii), f-(ii), g-(i)          (B) a-(vii), b-(v), c-(vi), d-(iv), e-(iii), f-(i), g-(ii)
(C) a-(iv), b-(vi), c-(ii), d-(v), e-(i), f-(vii), g-(iii)          (D) a-(iii), b-(vii), c-(v), d-(vi), e-(i), f-(ii), g-(iv)

Q.9. Water shortage may be a consequence of
(i) variation in seasonal  or annual precipitation
(ii) over exploitation and contamination of water sources.

(A) (i) is correct                                                       (B) (ii) is correct
(C) Both (i) and (ii) are correct                               (D) Both are wrong

Q.10. In dry regions which irrigation method should be adopted for the conservation of water resource ?
(i) Canals should be properly lined to minimize losses by water seepage.
(ii) Sprinklers effectively irrigate the area by checking water losses through seepage and evaporation.
(iii) Drip or trickle irrigation.
(iv) Forest and other vegetation cover to slow the surface runoff.

(A) (i) & (ii) are correct        (B) (i) and (iv) are correct   (C) (i), (ii) and (iii) are correct   (D) (iii) is correct





ANSWER  - Q.1.-(D), Q.2.-(C), Q.3.-(D), Q.4.-(D), Q.5.-(B),
                     Q.6.-(A), Q.7.-(C), Q.8.-(A), Q.9.-(C), Q.10-(D)

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