Question
During the formation of coal from plant material, a sequence of chemical and physical changes occurs under high pressure and temperature over millions of years. Which of the following correctly represents the progressive increase in carbon content during the formation of coal?
Asked in RRB Technician Grade III · 2026
Coal and Petroleum · Chemistry
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Alkenes contain at least one carbon–carbon double bond.
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Questions Asked from Alkanes (Saturated Hydrocarbons): Structure & Reactions in Previous Exams
See how often Alkanes (Saturated Hydrocarbons): Structure & Reactions has appeared in previous-year questions across major government exams.
11UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2014, 2017, 2019, 2020, 2021, 2023, 2024
9SSC Questions Asked in These Years:2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
5Railways Questions Asked in These Years:2018, 2021, 2022, 2025, 2026
15State PSC Questions Asked in These Years:2002, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Alkanes (Saturated Hydrocarbons): Structure & Reactions has appeared in 40 previous-year exam questions, most frequently in State PSC, UPSC and SSC.
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