Chemical Engineering - Materials and Construction

1. 

Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the

A. ultimate tensile strength (U.T.S.)
B. endurance limit
C. elastic limit
D. none of these

Answer: Option B

Explanation:

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2. 

Bog iron used for the adsorption of H2S from coke oven gas is

A. an intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide).
B. iron impregnated with resin (usually bakelite).
C. carbon free iron.
D. none of these.

Answer: Option A

Explanation:

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3. 

Wrought iron is a suitable material of construction for handling __________ solutions.

A. dilute acidic
B. concentrated acidic
C. alkalis & alkaline
D. none of these

Answer: Option C

Explanation:

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4. 

Steel rods are used in reinforced concrete to increase its __________ strength.

A. shear
B. tensile
C. compressive
D. none of these

Answer: Option B

Explanation:

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5. 

Corrosion involves exchange of electrons in __________ corrosion.

A. chemical
B. electrochemical
C. both (a) & (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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