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12 questions
Which one of the following is a step in the formation of soil?
Earthquakes and volcanic eruptions
Weathering of rocks
Addition of hummus
All of these
Which of the following does not cause soil erosion?
Deforestation
Terrace farming
Floods
Overgrazing
Soil conservation measures are mainly aimed at protecting
Plants
top soil
Sub soil
soil organisms
In which horizon of soil minerals are found?
A
B
C
None of these
The best top soil for growing plants is
sandy soil
loamy soil
clayey soil
all of these
The mixture of rock particles and humus is called
soil
Weathering
Silt
Gravel
Cotton grows well in
Black soil
Red soil
Clayey soil
Loamy soil
In which of the following humus is present in reasonable amount
A
B
C
bedrock
Which horizon consists of small lumps of rocks with cracks and crevices?
A
B
C
None of these
Soil that can retain water in it
Sandy
Loamy
Clayey
Black
Soil that cannot retain water in it
Sandy
Loamy
Clayey
Black
Soil that contains more nutrients, humus and moisture
Sandy
Clayey
Loamy
Black
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