Q60. India’s prominent floating solar-power project at Omkareshwar is located in which state?
[MP Forest Guard, 16 June 2023]
(A) Madhya Pradesh
(B) Gujarat
(C) Maharashtra
(D) Odisha
Answer: A. Madhya Pradesh
Explanation: The Omkareshwar project uses a water-reservoir surface in Madhya Pradesh for floating photovoltaic arrays. Floating panels can reduce pressure on land resources, but require careful engineering for anchoring, water-level changes and maintenance.
Q59. Which substance is NOT a by-product derived from coal processing?
[MP Police Constable, 12 September 2023]
(A) Coke
(B) Petroleum
(C) Coal tar
(D) Coal gas
Answer: B. Petroleum
Explanation: Coke, coal tar and coal gas can be obtained when coal is heated in the absence of air. Petroleum is a separate naturally occurring fossil resource extracted from sedimentary reservoirs rather than manufactured by processing coal.
Q58. Which gas gives biogas its principal heating value?
[SSC CHSL, 2 August 2023]
(A) Oxygen
(B) Methane
(C) Nitrogen
(D) Hydrogen chloride
Answer: B. Methane
Explanation: Methane is the combustible component responsible for most useful energy in biogas. Anaerobic digestion of manure and organic wastes produces methane with carbon dioxide. Removing impurities can upgrade the gas for wider fuel applications.
Q57. The 750 MW Rewa solar park occupies approximately how much land, as cited in the exam?
[MPPGCL Junior Engineer, 28 April 2023]
(A) 850 hectares
(B) 1,120 hectares
(C) 1,590 hectares
(D) 2,800 hectares
Answer: C. 1,590 hectares
Explanation: The Rewa Ultra Mega Solar project in Madhya Pradesh was developed as a large photovoltaic complex. Its land requirement reflects the space needed for numerous panels, service roads and grid equipment. Capacity is expressed in megawatts.
Q56. Which product group traditionally contributes heavily to India’s import bill among these?
[WBCS Executive Prelims, 2023]
(A) Cotton textiles
(B) Tea and coffee
(C) Jute products
(D) Petroleum, oil and lubricants
Answer: D. Petroleum, oil and lubricants
Explanation: India imports large amounts of crude petroleum to satisfy transport, industrial and chemical feedstock demand. Consequently, petroleum, oil and lubricant products contribute significantly to import expenditure, unlike traditional export-oriented items such as tea or textiles.
Q55. India’s earlier target of 175 GW renewable-energy capacity was set for which year?
[MP Police Constable, 3 September 2023]
(A) 2020
(B) 2022
(C) 2025
(D) 2030
Answer: B. 2022
Explanation: India announced an earlier renewable-power capacity target of 175 gigawatts for 2022. The target covered major solar and wind additions as well as other renewables. It should be distinguished from later national non-fossil targets.
Q54. Which of the following is a naturally occurring fossil fuel?
[MP Forest Guard, 11 June 2023]
(A) Hydrogen produced by electrolysis
(B) Biogas from dung
(C) Charcoal
(D) Petroleum
Answer: D. Petroleum
Explanation: Petroleum is a naturally occurring hydrocarbon mixture found underground. Charcoal is manufactured from wood, biogas is produced by microorganisms and electrolytic hydrogen is generated using electricity. These substances differ in origin and renewability.
Q53. Which enterprise was associated with an early cross-country crude-oil pipeline in India?
[SSC Stenographer, 13 October 2023]
(A) SAIL
(B) BHEL
(C) NHPC
(D) Oil India Limited
Answer: D. Oil India Limited
Explanation: Oil India Limited developed important petroleum transportation infrastructure linked to northeastern crude production and refineries. Pipelines provide continuous movement of liquid fuels across long distances, reducing reliance on road transport for large volumes.
Q52. Which fossil resource formed largely from ancient marine organisms?
[MP Police Constable, 16 August 2023]
(A) Petroleum
(B) Granite
(C) Limestone building stone
(D) Quartz
Answer: A. Petroleum
Explanation: Much petroleum formed from buried aquatic microorganisms whose organic material was altered by heat and pressure. Oil and gas migrate through permeable strata and can accumulate below impermeable cap rocks within sedimentary basins.
Q51. Which resource is often called liquid gold because of its economic importance?
[SSC Junior Engineer, 9 October 2023]
(A) Petroleum
(B) Coal
(C) Iron ore
(D) Natural uranium
Answer: A. Petroleum
Explanation: Petroleum is an energy-dense liquid resource essential for transport fuels and petrochemicals. Its extraction, pricing and international trade have major economic consequences. It is a finite resource, so energy diversification remains important.
