6. Assertion (A) : Laterite soils are red in colour and coarse in texture.
   Reason (R) : Abundant phosphoric acid and silica give these soils, the particular colur and texture.
   Code

1. 1. Both (A) and (R) are individually true and (R) is the correct explanation of (A)
      

   
   
   

   2. Both (A) and (R) are individually true but (R) is not the correct explanation of (A)
      

   
   
   

   3. (A) is true but (R) is false
      

   
   
   

   4. (A) is false but (R) is true
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

7. Assertion (A) : Laterite soils are red in colour and coarse in texture.
   Reason (R) : Laterite soils contain high concentrations of silica and calcium carbonate.

1. 1. Both (A) and (R) are individually true and (R) is the correct explanation of (A)
      

   
   
   

   2. Both (A) and (R) are individually true but (R) is not the correct explanation of (A)
      

   
   
   

   3. (A) is true but (R) is false
      

   
   
   

   4. (A) is false but (R) is true
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

8. Which one of following statements is not correct ?

1. 1. Highly weathered tropical and subtropical soils are called Oxisols

   
   
   

   2. Grassland soils rich in organic matter and high in bases are called Mollisols

   
   
   

   3. Soils in waterlogged areas with high organic matter are called Histosols

   
   
   

   4. Young soils with no horizons are called Inceptisols

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

9. Which one of the following stands for the symbol pH ?

1. 1. Phosphorus and hydrogen content in soil

   
   
   

   2. Percentage of hydrogen in soil

   
   
   

   3. Proportion of potash and hydrogen in soil

   
   
   

   4. Concentration of hydrogen ions in the soil

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

---

10. Consider the following statements
    1. Chernozem soils originate under tall grass prairie vegetation.
    2. Literites form under hot and humid climatic conditions.
    Which of the statement (s) given above is / are correct ?

1. 1. 1 only

   
   
   

   2. 2 only

   
   
   

   3. Both 1 and 2

   
   
   

   4. Neither 1 nor 2

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---