Why is the component mentioned by you in (a) important for agriculture?
Show Hint
Solution and Explanation
Humus is important for agriculture because it improves soil structure, making it looser and better for plant roots to penetrate. It also enhances water retention and drainage in the soil, which is vital for plant growth.
Step 2: Nutrient supply.
Humus provides essential nutrients to the plants, such as nitrogen, phosphorus, and potassium, which are necessary for healthy plant growth. It also increases the soil's ability to hold these nutrients, reducing the need for chemical fertilizers.
Top Questions on Soils
- What is soil conservation?
- It is difficult to grow rice in red soil without the help of irrigation.
- Black soil does not get leached.
- 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.