Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Although internal-combustion engines used in today's vehicles can be adapted to burn hydrogen, hydrogen powered combustion engines probably are not the future of hydrogen fuelled vehicles. Reason R : It is more efficient to convert hydrogen energy directly to electricity using fuel cells. In the light of the above statements, choose the correct answer from the options given below :
Both A and R are true and R is the correct explanation of A
To address this question, we need to evaluate both the Assertion (A) and the Reason (R) statements.
- Assertion A: The statement suggests that although current internal-combustion engines can be adapted to burn hydrogen, this is not likely the future path for hydrogen-fueled vehicles.
- Reason R: This statement claims that it's more efficient to convert hydrogen energy directly to electricity using fuel cells.
Let's analyze each part:
- Hydrogen combustion engines are technically feasible but not as efficient as fuel cells. Fuel cells convert chemical energy directly into electrical energy with greater efficiency and fewer emissions compared to combustion engines.
- Fuel cells generate electricity by combining hydrogen with oxygen, with water being the primary byproduct, leading to a cleaner process compared to combustion, which may still emit some nitrogen oxides due to high-temperature operation.
- Therefore, investing in fuel cell technology is more promising for future developments in hydrogen vehicles due to efficiency and environmental benefits.
Based on this reasoning:
- Both A and R are true. Assertion A accurately describes the current and potential future developments in hydrogen technology for vehicles.
- Reason R correctly explains Assertion A. The efficiency of fuel cells over combustion engines aligns with the argument presented in the assertion.
Therefore, the correct answer is: Both A and R are true and R is the correct explanation of A.
Similar Questions
Pyrolysis
A. is a biochemical conversion process
B. is useful for production of bio-oil
C. yields minimum waste
D. liquid is a good substitute of heating oil
E. can produce Ethanol
Choose the correct answer from the options given below:The total power output in a hydroelectric installation depends upon
A. the total water flow
B. the electrical conductivity of water
C. atmospheric temperature
D. vertical distance through which water falls
Choose the correct answer from the options given below:Given below are two statements :
Statement I : By 2025, two-thirds of world's people will be living in water stressed countries.
Statement II : Growth of water withdrawal and consumption in Industrial sector is going to overtake that in Agriculture sector by 2025.
In the light of the above statements, choose the correct answer from the options given below :
Arrange the following Earth's water compartments in increasing order of the amount of the water they hold.
A. Rivers and streams
B. Fresh lakes
C. Atmosphere
D. Ice and Snow
Choose the correct answer from the following options given below :Given below are two statements:
Statement-I Most of the world's geothermal sites are located in the circum pacific belt known as 'rim of fire'.
Statement II : Himalayan geothermal fields in India are also part of 'rim of fire'.
In the light of the above statements, choose the most appropriate answer from the options given below:
Identify the correct sequence of biomass fuels in terms of their energy content per unit mass
Which are the examples of potential kinetic energy? Select your answer from the options given below:
(i) Water that is behind a dam
(ii) Radio signals
(iii) An airplane idling on the runway
(iv) A satellite before it is launched
(v) A coiled spring
(vi) Heat harnessed from the oceans
Options:Which of the following materials is widely used in solar cell fabrication?
A geothermal reserve has the stored heat of 5×10¹⁹ J. If the overall efficiency of a geothermal power plant based on this reserve is 0.04, how much power can be produced by the plant in 1 year?
In the scheme of life, soil is an essential resource of life, as it plays the following roles.
(a) It is a reservoir of carbon.
(b) It is the medium for growth of food and energy for the animal world.
(c) It provides oxygen to the biotic community.
(d) It is a natural reservoir for the huge amont of water.
Select the correct answer from the above:
Important Questions from Natural and Energy Resources
Which of the following rocks is formed by the cooling and crystallisation of magma?
Which of the following is the largest sink of CO 2gas?
Which one of the following is not a fossil fuel?
A. Coal
B. Oil
C. Peat
D. Electricity
From the energy security perspective, which of the following energy sources is considered most secure for India?
Which of the following states has maximum wind power potential in India as per MVRE's latest report?
