ASE-Style Multiple Choice While Having a Discussion, Technician a Says

question 19

Multiple Choice

ASE-Style Multiple Choice While having a discussion, Technician A says that car manufacturers are required by federal regulations to equip cars with bumpers that can withstand 5 mph (8 km-h) collisions without incurring damage to the vehicle. Technician B says that the federal standards have been relaxed to 2.5 mph (4 km-h) . Who is correct?

• A)A only
• B)B only
• C)Both A and B
• D)Neither A nor B

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Definitions:

Crossed Claisen Condensation

A reaction involving the condensation of two different esters or an ester and a carbonyl compound in the presence of a strong base, producing a β-keto ester or a β-diketone.

Methyl Pentanoate

An ester formed from methanol and pentanoic acid, used in flavorings and fragrances.

β-Ketoester

An ester compound containing a ketone group (C=O) at the beta-position relative to the ester group.

Claisen Condensation

A chemical reaction where two esters or an ester and a carbonyl compound react in the presence of a base to form a β-keto ester or a β-diketone.