Which sequence correctly represents the formation stages of coal?
Peat → Lignite → Bituminous → Anthracite
Coal forms in progressive stages as buried plant matter undergoes increasing heat and pressure over time: Peat (least carbon content) changes into Lignite, then into Bituminous coal, and finally into Anthracite (highest carbon content and hardest form).
Hence, this is the correct answer.
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Important Questions from Chemistry in Everyday Life
Consider the following statements and select the correct option.
Statement A: Plants require specific soil pH for proper growth.
Statement B: Farmers use pH values to decide the type of fertiliser to add.Consider the following statements and select the correct option.
Statement A: Sugarcane juice can be fermented to give alcohol (ethanol).
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Which of the following statement(s) about the artificial sweeterning agents is/are TRUE?
1. Ortho-sulphobenzimide is the first popular artificial sweetening agent.
2. Ortho-sulphobenzimide is also called as saccharin.
3. Ortho-sulphobenzimide is about 100 times as sweet as cane sugar.Choose the correct answer from the options given below:
