NCERT Class 8 Science — Chapter 1: Coal and petroleum
Which of the following petroleum fractions has traditionally been used as a solvent for dry cleaning?
From NCERT Science - class 8 · Page 5
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Consider the following statements regarding Coal Tar: 1. It is a mixture of various substances. 2. It is used to make food preservatives. 3. It is used to make edible oils. Which of the statements given above are correct?
In the context of petroleum fractionation, what is the primary function of the lubricating oil fraction?
What is the primary environmental advantage of using Compressed Natural Gas (CNG) for transport vehicles?
Which of the following is NOT a constituent of petroleum?
Which natural process is primarily attributed to the burying of dense forests that eventually led to the formation of coal?
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