CBSE Class 7 Science Soil MCQs

Soil

Question.  The rotting dead matter in the soil is called_________. 
(a)  Humus  
(b)  Salt   
(c)  Sugar  
(d)  Protein

Answer: A

Question.  Breaking down of rocks by the action of wind and climate is called ____
(a)  Weathering 
(b)  Soil vegetation  
(c)  Cultivating 
(d)  Percolation

Answer: A

Question.  The water holding capacity is the highest in 
(a)  Sandy soil  
(b)  Clayey soil  
(c)  Loamy soil  
(d)  Mixture of sand and loam

Answer: B

Question.  In addition to the rock particles, the soil contains________ 
(a)  Air and water  
(b)  Water and plants  
(c)  Minerals, organic matter. Air and water  
(d)  Water, air and plants

Answer: C

Question.  The removal of land surface by water, wind or ice is known as___________ 
(a)  Erosion  
(b)  Weathering  
(c)  Percolation  
(d)  Retention 

Answer: A

Question.  The soil containing greater portion of big particles is called ---------- 
(a)  Sandy soil  
(b)  Loamy soil  
(c)  Clayey soil  
(d)  Bricks

Answer: A

Question. The soil containing greater portion of fine particles is called __________ 
(a)  Sandy soil 
(b)  Loamy soil 
(c)  Clayey soil 
(d)  Bricks

Answer: B

Question. The soil containing same amount of large and fine particles is called ________ 
(a)  Sandy soil 
(b)  Loamy soil  
(c)  Clayey soil 
(d)  Bricks

Answer: C

Question. Water can drain easily though ________ 
(a)  Sandy soil  
(b)  Loamy soil  
(c)  Clayey soil 
(d)  Bricks

Answer: A

Question. The type of soil suitable for growing paddy is _________ 
(a)  Sandy soil   
(b)  Loamy soil  
(c)  Clayey soil   
(d)  Bricks

Answer: C

Question. The type of soil suitable for growing masoor dal is 
(a)  Sandy soil  
(b)  Loamy soil  
(c)  Clayey soil  
(d)  Bricks

Answer: B

Question. The colour of red soil is due to presence of:
(a) minerals
(b) iron oxide
(c) vitamins
(d) none of these

Answer:  C

Question. Clay particles are of size
(a) More than 0.004 mm
(b) Less than 0.04 mm
(c) More than 0.02 mm
(d) Less than 0.002 mm

Answer:  D

Question. In which horizon of soil minerals are found?
(a) A
(b) B
(c) C
(d) None of these

Answer:  B

Question. Which one of the following is a step in the formation of soil?
(a) Earthquakes or volcanic eruptions
(b) Weathering of rocks
(c) Addition of humus
(d) All are involved in the formation of soil

Answer:  D

Question. Humus and the smallest particles of rock form the upper layer of soil called:
(a) parent rock
(b) sub soil
(c) top soil
(d) none of these

Answer:  D

Question. To improve the capacity to hold water ……………………. is added to the soil:
(a) rocks
(b) humus
(c) gravel
(d) sand

Answer:  B

Question. ___________ we can see the soil profile.
(a) At the sides of a road on a hill
(b) At steep of river bank
(c) Both the above
(d) None of these

Answer:  C

Question. aerates the soil and allows the air to reach the roots of plants:
(a) earthworm
(b) becteria
(c) fungi
(d) virus

Answer:  D

Question. _________ are soils in which more than half of the parent mineral matter is volcanic ash and appear very dark in colour.
(a) Desert soil
(b) Volcanic soil
(c) Alluvial soil
(d) Clayey soil

Answer:  B

Question. Which layer is formed of decayed organic matter?
(a) Air
(b) Humus
(c) Clay
(d) Minerals

Answer:  C

Question. Soil carried from else where and deposits them in the:
(a) substratum
(b) B horizon
(c) C horizon
(d) transported soil

Answer:  D

Question.The rotten dead matter in the soil is called:
(a) organic matter
(b) sand
(c) humus
(d) silt

Answer:  A

Question. Humus is present in:
(a) bad rock
(b) gravel
(c) topsoil
(d) subsoil

Answer:  C

Question. The microorganisms present in the soil require moisture (water) and nutrients for growth and survival. Choose from the options below the habitat (place) where the soil has plenty of water and nutrients.
(a) Desert
(b) Forest
(c) Open field
(d) Cricket ground

Answer:  B

Question. Soil erosion is a process of
(a) Soil formation
(b) Soil pollution
(c) Weathering
(d) Removal of top soil

Answer:  D

Question. Loamy soil is most suitable for planting:
(a) rice crop
(b) pulses crop
(c) cotton crop
(d) all of these

Answer:  A

Question. Which soil when felt with your hand will be the smoothest:
(a) clay
(b) silt
(c) sand
(d) loam

Answer:  C

Question. Which factor influences soil formation?
(a) Climate
(b) Vegetation
(c) Parent rock
(d) All of these

Answer:  A

Question. Which type of soil retains the highest amount of water ?
(a) clayey soil
(b) sandy soil
(c) loamy soil
(d) none of these

Answer:  B

Question. Of the four distinct layers or sections of soil profile, organic matter is found in:
(a) top soil
(b) second layer from the top
(c) third layer from the top
(d) the bottom layer

Answer:  A

Question. Soil conservation measures are mainly aimed at protecting which of the following?
(a) Plants
(b) Sub soil
(c) Top soil
(d) Soil organisms

Answer:  B

Question. Dead and decaying material produced by plants in the soil is called
(a) Micro organism
(b) Humus
(c) Khaddar
(d) Fungus

Answer:  B

Question. The uppermost layer of earth’s crust, in which plants grow is:
(a) soil
(b) land
(c) water
(d) none of these

Answer:  B

Question. Different layers of the soil differs in feels colours, depth and chemical composition are:
(a) horizons
(b) soil profile
(c) weathering
(d) can’t say

Answer:  B