Which of the following statements are correct in the context of energy crops?…
2022
Which of the following statements are correct in the context of energy crops?
(A) They are fast growing plants.
(B) They require specific season to grow.
(C) They necessarily require fertile land to grow.
(D) They can be converted into gaseous and liquid fuel.
(E) They generally have high calorific value.
Choose the correct answer from the options given below:
Answer: A. A, D and E only — CONCEPTEnergy crops are plants cultivated mainly to produce biomass for heat, electricity, or biofuels. They are commonly selected for rapid biomass…
- A.
A, D and E only
- B.
A, B, C and D only
- C.
B, C, D and E only
- D.
C, D and E only
Show answer & explanation
Correct answer: A
CONCEPT
Energy crops are plants cultivated mainly to produce biomass for heat, electricity, or biofuels. They are commonly selected for rapid biomass production and useful energy content, while their sowing season and soil requirements vary by species and region.
Biomass can be transformed by biochemical and thermochemical routes into gaseous and liquid fuels. A category-wide claim must therefore describe a general energy-crop trait, not turn one crop’s local growing condition into a universal requirement.
APPLICATION
Statement A: Fast growth shortens the time needed to accumulate harvestable biomass, so rapid growth is a typical energy-crop characteristic.
Statement B: Every species has suitable cultivation windows, but energy crops as a category do not share one required season; the timing varies with crop and climate.
Statement C: Fertile soil can increase yield, but it is not necessary for the entire category because energy crops can also be cultivated on marginal or lower-quality land.
Statement D: Anaerobic digestion can produce biogas, while fermentation or oil processing can produce liquid fuels such as ethanol or biodiesel.
Statement E: Energy crops are selected for energy-dense combustible or convertible biomass; when dry, their lignocellulosic or oil-rich matter releases substantial heat. Moisture and ash can lower the delivered heating value, but the generally high useful calorific value remains a reason these crops serve as fuel feedstocks.
CROSS-CHECK AND CONTRAST
A, D and E only keeps the three general energy and conversion characteristics and excludes the two universal growing-condition claims.
A, B, C and D only includes both universal growing-condition claims and omits the calorific-value characteristic.
B, C, D and E only omits rapid growth and includes both universal growing-condition claims.
C, D and E only omits rapid growth, excludes the one-required-season claim, and includes fertile land as a necessary condition.
The official NTA final key for question ID 11508 assigns option ID 16029, which maps to A, D and E only; the independent scientific cross-check also rejects “one specific season” and “necessarily fertile land” as universal claims.
Therefore, the correct combination is A, D and E only.