Why were some fuels called unleaded? I. Lead used to be added to diesel to improve its octane rating II. Blends with minimal lead content replaced lead-heavy fuels. a.Neither I nor II b.I only c.II only d.Both I and II

Why were some fuels called unleaded? I. Lead used to be added to diesel to improve its octane rating II. Blends with minimal lead content replaced lead-heavy fuels. a.Neither I nor II b.I only c.II only d.Both I and II

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter20: Organic Chemistry

Section: Chapter Questions

Problem 21A

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Question

Why were some fuels called unleaded?
I. Lead used to be added to diesel to improve its octane rating
II. Blends with minimal lead content replaced lead-heavy fuels.

a.Neither I nor II

b.I only

c.II only

d.Both I and II

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