Science - Soil
Exam Duration: 45 Mins Total Questions : 30
Which of these is a part of soil that is most helpful to the growth of plants?
- (a)
Humus
- (b)
Sand
- (c)
Clay
- (d)
Small porous rocks
Which of these are present in the soil and required for the growth of crops?
- (a)
Chemicals
- (b)
Pesticides
- (c)
Fertilisers
- (d)
Mineral nutrients
Which of the following sequences show the correct arrangement of different layers of the soil?
- (a)
- (b)
- (c)
- (d)
Which of the following layers of the soil contain more humus?
- (a)
Top soil
- (b)
Subsoil
- (c)
Bed rock
- (d)
Both (B) and (C)
In which of the following agricultural methods different types of crops are grown in a piece of land season after season?
- (a)
Monoculture
- (b)
Irrigation
- (c)
Crop rotation
- (d)
Manuring
Which of the following worms live in the soil?
- (a)
Ringworm
- (b)
Flatworm
- (c)
Earthworm
- (d)
Silkworm
Which of the following helps in soil formation?
- (a)
Formation of rocks
- (b)
Arrangement of layers of sand
- (c)
Breaking down of rocks
- (d)
Arrangement of rocks.
Which layer of soil provides shelter for many living organisms?
- (a)
A-Horizon
- (b)
B-Horizon
- (c)
C-Horizon
- (d)
Mineral
Which of these soils are rich in nutrients and makes the soil fertile?
- (a)
Gravel
- (b)
Humus
- (c)
Clay
- (d)
Loam
Percolation rate of water is highest in which of the following soils?
- (a)
Clay soil
- (b)
Sandy soil
- (c)
umus
- (d)
Loamy soil
Which soil is good at retaining water?
- (a)
Sand and Clayey soil
- (b)
Loamy and Sandy soil
- (c)
Loamy and Clayey soil
- (d)
All of these
Which soil is suitable for growing cereals like wheat and gram?
- (a)
Clayey and loamy
- (b)
Sandy and clayey
- (c)
Sandy and loamy
- (d)
Silt and sandy
Which of the following crops are grown in loamy soil?
- (a)
Cereals
- (b)
Pulses
- (c)
Vegetables
- (d)
All of these
Which of the following soil drain water easily?
- (a)
Clayey soil
- (b)
Sandy soil
- (c)
Loamy soil
- (d)
All of these
Which crop is grown in black soil?
- (a)
Wheat
- (b)
Gram
- (c)
Paddy
- (d)
Cotton
Which soil is used to make surahi and matki?
- (a)
Sandy soil
- (b)
Loamy soil
- (c)
Clayey soil
- (d)
Silt
Which soil is rich in humus?
- (a)
Sandy soil
- (b)
Loamy soil
- (c)
Clayey soil
- (d)
Both (A) and (B
Which of the following prevents soil erosion?
- (a)
Animals
- (b)
Rocks
- (c)
Plants
- (d)
Mountains
Which of the following are the constituents of soil?
- (a)
Air and water only
- (b)
Water and plants only.
- (c)
Minerals, organic matter, air and water.
- (d)
Water, air and plants only
What is the collective name for layers of soil?
- (a)
Sedimentation
- (b)
Weathering
- (c)
Erosion
- (d)
Soil profile
Why are bacteria and fungi important to the environment?
- (a)
They decompose dead plants and animals
- (b)
They cause diseases
- (c)
They are very tiny
- (d)
They cannot be seen with naked eyes.
A fertile agricultural soil appear deep coloured at the surface as compared to the soil one metre down. The reason for the colour of top soil is due to
- (a)
rich in organic matter
- (b)
fertilisers
- (c)
more moisture
- (d)
recent formation.
Based on the given information, which statement is true about the importance of soil to plants?
(i) Soil supplies plants with food
(ii) Soil supplies plants with minerals
(iii) Soil supplies plants with air and water
- (a)
(i) only
- (b)
(ii) and (iii) only
- (c)
(i) and (ii) only
- (d)
(i), (ii) and (i)
Which of the following are considered as "natural tillers of the soil"?
- (a)
Earthworms
- (b)
Canis lupus
- (c)
Apis indica
- (d)
Roundworms
Study the given characteristics and identify the type of soil.
(i) Particles are large and has large spaces between them
(ii) Soil tend to be light, well aerated and rather dry
- (a)
Clayey soil
- (b)
Sandy soil
- (c)
Loamy soil
- (d)
Silt
Which of the following is/are the benefits of organic farming?
(i) It does not pollute the environment
(ii) It is easily available
(iii) It enriches the soil with microbial growth
- (a)
(i) only
- (b)
(ii) only
- (c)
(ii) and (iii) only
- (d)
(i), (ii) and (iii)
Which of the following deals with the study of soil?
- (a)
Pedology
- (b)
Pedagogy
- (c)
Physiology
- (d)
None of these
Which soil tend to be light and well aerated?
- (a)
Clayey soil
- (b)
Sandy soil
- (c)
Loamy soil
- (d)
Silt soil
Ground water gets collected in which of the following layers of soil?
- (a)
A-horizon
- (b)
B-horizon
- (c)
C-horizon
- (d)
Both (A) and (B)
The given formula \(\frac { amountofwater(ML) }{ time\quad in\quad (min) } \) is used to calculate which of the following processes ?
- (a)
Humidity
- (b)
Percolation rate
- (c)
Climate
- (d)
Evaporation