Soil Science Quiz 8

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Soil Science Quiz 8

1 / 50

The deficient level of N (%) in plants suggested by various workers is________?

2 / 50

In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of___________?

3 / 50

Weathering is the natural process of__________?

4 / 50

Which chemical used to prevent evaporation from surface of water in water bodies?

5 / 50

The problem of soil crosion Thal and Cholistan is predominantly due to___________________?

6 / 50

Particular matter consists of________?

7 / 50

Which element is known as chemical police man of plant?

8 / 50

Age of Earth is_________?

9 / 50

Loss of nitrogen in the form of NH3 in alkaline medium is known as_________?

10 / 50

Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is_________?

11 / 50

What kind of nitrogenous (N) fertilizers should not be used for flooded soil:

12 / 50

hydrosphere refers to__________?

13 / 50

Who consider the various properties of soil in relation to plant production?

14 / 50

Organic matter in Pakistani soils is generally:_________?

15 / 50

Granite and Basalt are examples of:___________?

16 / 50

Sugar cane is_________?

17 / 50

A treeless artic plain is called as___________________?

18 / 50

Metamorphic rocks are classified into:___________?

19 / 50

Which of the following fertilizers show maximum residual acidity with the continuous soil application:

20 / 50

The tension of the water at the upper plastic limit is equivalent to pF value:

21 / 50

How much percentage of soils of Pakistan are deficient in P__________?

22 / 50

The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?

23 / 50

Chitin and steroids are_________?

24 / 50

Which of the following nutrient elements are regarded as energy exchangers:

25 / 50

Weathering is___________?

26 / 50

Losses of soil water not includes_________?

27 / 50

Any tillage and planting system that maintains at least 30% of the soil surface covered by residue after planting for the purpose of reducing soil erosion by water:

28 / 50

Which bacteria convert nitrite to nitrate___________________?

29 / 50

Which one of the following techniques is used for assessing available P in soil and does not include growing plants:

30 / 50

Fine-graned rocks formed on earth crust are called________?

31 / 50

Which one of the following is physical property of soil__________?

32 / 50

Peat soils are not present in Pakistan because these are formed in___________?

33 / 50

Planets in our system are________?

34 / 50

Vertical movement of water was studied by_________________?

35 / 50

Physical condition of soil for plant growth is called___________________?

36 / 50

Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:

37 / 50

During decomposition of organic matter, inititial decomposition is dominated by:__________?

38 / 50

Causes of Soil are:__________?

39 / 50

The chemical formula of Dolomite is________________?

40 / 50

Places where volcanoes occur are_________________?

41 / 50

Integrated Nutrient Management (INM) is a well-accepted approach for the sustainable management of________?

42 / 50

Ligands that occur in Pakistan soils are__________________?

43 / 50

Rocks formed from compacted clay or mud are called________?

44 / 50

A mineral horizon that is either too thin, too light in colour, too low in organic matter:

45 / 50

Perfect hardness of any mineral is determined by___________________?

46 / 50

The available form of sulphur for plant is___________________?

47 / 50

A soil is classified as sodic soil when__________?

48 / 50

1 mg of H+ will be equal to_________?

49 / 50

Mineral soil contain organic carbon___________________?

50 / 50

_________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.

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