Identify the type of coal that has the highest calorific value.
Show Hint
- Peat
- Lignite
- Bituminous
- Anthracite
The Correct Option is D
Solution and Explanation
Coal types are classified based on their calorific value and carbon content. The four main types of coal, from lowest to highest calorific value, are: peat, lignite, bituminous, and anthracite.
Step 2: Analysis of the options.
- (a) Peat: Incorrect. Peat has the lowest calorific value of all the coal types.
- (b) Lignite: Incorrect. Lignite has a relatively low calorific value.
- (c) Bituminous: Incorrect. Bituminous coal has a moderate calorific value but is not the highest.
- (d) Anthracite: Correct. Anthracite has the highest calorific value due to its high carbon content and low moisture content.
Step 3: Conclusion.
The highest calorific value is found in anthracite coal. Final Answer: Anthracite.
Top Questions on Minerals and Energy Resources
- An ore of aluminium.
- ICSE Class X board - 2026
- Geography
- Minerals and Energy Resources
- A mineral that is used to make steel strong and resistant to rusting.
- ICSE Class X board - 2026
- Geography
- Minerals and Energy Resources
- The renewable energy produced by the natural rise and fall of ocean waters.
- ICSE Class X board - 2026
- Geography
- Minerals and Energy Resources
- Mention two benefits of the Bhakra Nangal project.
- ICSE Class X board - 2026
- Geography
- Minerals and Energy Resources
- State any two uses of copper.
- ICSE Class X board - 2026
- Geography
- Minerals and Energy Resources
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.