Assertion : Compressed natural gas (CNG) is natural gas under pressure and mainly composed of methane.
Reason : One of the advantages of using CNG as a fuel in automobiles is that it requires very less space for storage as compared to that of petrol or diesel.
Assertion : Compressed natural gas (CNG) is natural gas under pressure and mainly composed of methane.
Reason : One of the advantages of using CNG as a fuel in automobiles is that it requires very less space for storage as compared to that of petrol or diesel.
Reason : One of the advantages of using CNG as a fuel in automobiles is that it requires very less space for storage as compared to that of petrol or diesel.
A
(a) Both, Assertion and Reason, are true and Reason is the correct explanation of Assertion
B
(b) Both, Assertion and Reason, are true but Reason is not the correct explanation of Assertion
C
(c) If Assertion is true but Reason is false
D
(d) If Assertion is false but Reason is true
Text Solution
AI Generated Solution
The correct Answer is:
To analyze the assertion and reason provided in the question, we can break down the solution into the following steps:
### Step-by-Step Solution:
1. **Understanding the Assertion**:
- The assertion states that "Compressed natural gas (CNG) is natural gas under pressure and mainly composed of methane."
- This is true because CNG is indeed natural gas that has been compressed to reduce its volume, and it primarily consists of methane (CH4).
2. **Understanding the Reason**:
- The reason states that "One of the advantages of using CNG as a fuel in automobiles is that it requires very less space for storage as compared to that of petrol or diesel."
- This statement is false. While CNG is a cleaner fuel, it actually requires more space for storage compared to petrol or diesel due to the need for high-pressure tanks.
3. **Evaluating the Truth of Each Statement**:
- Since the assertion is true (CNG is natural gas under pressure and mainly composed of methane), we confirm that the assertion is correct.
- The reason is false because CNG requires a larger storage space than petrol or diesel, contradicting the claim made in the reason.
4. **Conclusion**:
- Based on the evaluations, we conclude that the assertion is true while the reason is false. Therefore, the correct option is that the assertion is true but the reason is false.
### Final Answer:
- The correct answer is **Option C**: Assertion is true, but Reason is false.
---
To analyze the assertion and reason provided in the question, we can break down the solution into the following steps:
### Step-by-Step Solution:
1. **Understanding the Assertion**:
- The assertion states that "Compressed natural gas (CNG) is natural gas under pressure and mainly composed of methane."
- This is true because CNG is indeed natural gas that has been compressed to reduce its volume, and it primarily consists of methane (CH4).
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Hydrogen accounts for approximately 75% of the mass of the universe. Hydrogen serves as the nuclear fuel of our Sun and other stars, and these are mainly composed of hydrogen. On the earth, though hydrogen is rarely found in the uncombined state. Since the earth's gravity is too weak to hold such light molecules, nearly all the H_2 originally present in the earth's atmosphere has been lost to space. In the earth's crust and oceans, hydrogen is found in water, petroleum, proteins, carbohydrates and other compounds and it is the ninth most abundant element on a mass basis. Hydrogen has three isotopes : hydrogen or protium () , deuterium or heavy hydrogen (D or ), tritium (T or ) . The physical properties of the three isotopes are different due to the difference in their masses, i.e. isotope effect. The chemical properties of the three isotopes are similar as they have the same electronic configuration. Reaction between hydrogen and oxygen is highly exothermic, and gas mixtures that contain as little as 4% by volume hydrogen in oxygen (or in air) are highly flammable and potentially explosive. 2H_(2(g))+O_(2(g)), DeltaH^(ɵ)=-485 kJmol^(-1) As hydrogen is environmentally clean it is an enormously attractive fuel. 'Hydrogen economy' is an emerging field in which it is thought that our energy needs can be met by gaseous, liquid and solid hydrogen. As hydrogen is no a naturally occuring substance such as coal, oil or natural gas, energy must be exploaded to produce hydrogen before it can be used. Liquid H_2 has been used as rocket fuel as
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