As Shown in the Figure, a Bimetallic Strip, Consisting of Metal

question 211

Multiple Choice

As shown in the figure, a bimetallic strip, consisting of metal G on the top and metal H on the bottom, is rigidly attached to a wall at the left. The coefficient of linear thermal expansion for metal G is greater than that of metal H. If the strip is uniformly heated, it will

• A)curve upward.
• B)curve downward.
• C)remain horizontal, but get longer.
• D)remain horizontal, but get shorter.
• E)bend in the middle.

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Definitions:

Chymotrypsin

Chymotrypsin is a digestive enzyme that breaks down proteins in the small intestine.

Peptide

A short chain of amino acids linked by peptide bonds, forming the building blocks of proteins.

Ninhydrin

A chemical reagent used to detect amino acids and proteins by producing a deep blue-violet color.

Histidine

An essential amino acid in humans, involved in the growth and repair of tissues and the production of histamine.