What is soil conservation?
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Solution and Explanation
Soil erosion is the removal of the topsoil layer due to wind, water, or human activity. Soil conservation practices prevent this erosion by stabilizing the soil. For example, planting trees or cover crops helps in reducing wind and water erosion.
Step 2: Maintenance of soil fertility.
Soil conservation also involves the preservation of soil fertility, which is essential for successful agriculture. Techniques such as crop rotation, the use of organic fertilizers, and minimizing the use of chemical fertilizers help maintain the nutrient levels in the soil.
Step 3: Sustainable land use.
Soil conservation practices emphasize sustainable land use, ensuring that the land remains productive over the long term. This can include proper water management, controlled grazing, and preventing over-cultivation or deforestation.
Top Questions on Soils
- It is difficult to grow rice in red soil without the help of irrigation.
- Black soil does not get leached.
- In arid regions, trees are planted in rows perpendicular to wind direction.
- Name two methods of soil conservation practised in India.
- Name two areas in north India where soil conservation is required.
Questions Asked in ICSE Class X board exam
Give the output of the following Java program segment:
String a[] = {"Atasi", "Aditi", "Anant", "Amit", "Ahana"};
System.out.println(a[1].charAt(1) + "*" + a[2].charAt(2));The output of the above statement is:
- ICSE Class X board - 2026
- Character String
Assertion and Reasoning
Assertion (A): The substring() method modifies the original String.
Reason (R): The substring() method can extract part of a String from a specific index.
- ICSE Class X board - 2026
- Character String
Rewrite the following program segment using a
forloop:Given program segment:
int a = 5, b = 10;
while (b > 0)
{
b -= 2;
}
System.out.println(a * b);Note: Ensure that the variable $b$ remains accessible for the
System.out.printlnstatement after the loop terminates.- ICSE Class X board - 2026
- Control Statements
Define a class named
StepTrackerwith the following specifications:Member Variables:
String name— stores the user's name.int sw— stores the total number of steps walked ($sw$).double cb— stores the estimated calories burned ($cb$).double km— stores the estimated distance walked in kilometers ($km$).
Member Methods:
1.
void accept()
To input thenameand thesw(steps walked) usingScannerclass methods only.2.
void calculate()
Calculates calories burned ($cb$) and distance in ($km$) based on steps walked ($sw$) using the provided estimation logic.- ICSE Class X board - 2026
- Object-Oriented Programming
- Write a program to accept a two-dimensional integer array of order \( 4 \times 5 \) as input from the user. Check if it is a Sparse Matrix or not. A matrix is considered to be a sparse, if the total number of zero elements is greater than the total number of non-zero elements. Print appropriate messages.