NCERT Exemplar solutions for Science [English] Class 10 chapter 16 - Management of Natural Resources [Latest edition]

From the list given below pick the item that is not a natural resource

The most rapidly dwindling natural resource in the world is

The most appropriate definition of a natural resource is that it is a substance/commodity that is

The main cause for abundant coliform bacteria in the river Ganga is

The pH of water sample collected from a river was found to be acidic in the range of 3.5 – 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?

The pH range most conducive for life of fresh water plants and animals is

The three R’s that will help us to conserve natural resources for long term use are

Given below are a few statements related to biodiversity. Pick those that correctly describe the concept of biodiversity

1. Biodiversity refers to the different species of flora and fauna present in an area
2. Biodiversity refers to only the flora of a given area
3. Biodiversity is greater in a forest
4. Biodiversity refers to the total number of individuals of a particular species living in an area

Among the statements given below select the ones that correctly describe the concept of sustainable development

1. Planned growth with minimum damage to the environment
2. Growth irrespective of the extent of damage caused to the environment
3. Stopping all developmental work to conserve the environment
4. Growth that is acceptable to all the stakeholders

In our country, vast tracts of forests are cleared and a single species of plant is cultivated. This practice promotes

A successful forest conservation strategy should involve

The important message conveyed by the ‘Chipko Movement’ is

In our country, there are attempts to increase the height of several existing dams like Tehri and Almati, dams across Narmada.

Choose the correct statements among the following that are a consequence of raising the height of dams

1. Terrestrial flora and fauna of the area is destroyed completely
2. Dislocation of people and domestic animals living in the area
3. Valuable agricultural land may be permanently lost
4. It will generate permanent employment for people

Expand the abbreviation GAP

Select the incorrect statement

Which of the following is not a natural resource?

Select the wrong statement

Arabari forests of Bengal is dominated by

Ground water will not be depleted due to

Opposition to the construction of large dams is due to

Khadins, Bundhis, Ahars and Kattas are ancient structures that are examples for

Pick the right combination of terms which has no fossil fuel.

Select the eco-friendly activity among the following

It is important to make small check dams across the flooded gullies because they

1.  hold water for irrigation
2. hold water and prevent soil erosion
3. recharge ground water
4. hold water permanently

In a village in Karnataka, people started cultivating crops all around a lake which was always filled with water. They added fertilisers to their field in order to enhance the yield. Soon they discovered that the waterbody was completely covered with green floating plants and fishes started dying in large numbers.

1. Locate and name the water reservoirs in Figures (a) and (b).
2. Which has an advantage over the other and why?

                                                          (a)

                                 (b)

The underlined word in the following sentence have been jumbled up. Write them in their correct form.

Keenrose is a fuel used in jet crafts.