Which of the following has antiknock properties?
Correct answer: D. All of these
- A. Tetra-methyl lead
- B. Tetra-ethyl lead
- C. Isooctane
- D. All of these
Explanation
The correct answer is 'All of these' because tetra-methyl lead, tetra-ethyl lead, and isooctane all exhibit antiknock properties. Tetra-methyl lead and tetra-ethyl lead contain lead, an efficient antiknock agent, while isooctane burns smoothly with an octane number of 100. The other options are incorrect as they do not encompass all substances with antiknock properties.
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About Fundamental Principles of Organic Chemistry
Organic chemistry begins with carbon compounds classified by carbon skeleton, saturation and functional group. Work includes identifying groups such as hydroxyl, carbonyl, carboxyl and amino, applying basic nomenclature, and distinguishing structural, geometric and optical isomers, where the same molecular formula does not necessarily mean the same structure or properties.
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