Chemical Engineering Basics

851. Wrought iron does not have

1. Uniform strength in all directions
2. Ability to hold protective coating
3. High ductility & corrosion resistance
4. Easily weldable characteristics

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852. Wrought iron is never shaped by

1. Casting
2. Cold working
3. Forging
4. Welding

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853. Wrought iron is not

1. Ductile & resistant to corrosion/rusting
2. Weldable easily
3. Having uniform strength in all directions
4. Having maximum tensile strength along the lines of slag distribution

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854. X-rays are

1. Positively charged
2. Negatively charged
3. Neutral
4. Of higher wavelength than visible light

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855. Yield strength of a material is determined by the __________ test.

1. Creep
2. Tension
3. Compression
4. Endurance

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856. Yield strength of a polycrystalline metal with an average grain size „d’, is proportional to

1. d^1/2
2. d^-1/2
3. d
4. d^-1

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857. Young's modulus of a material is the measure of its

1. Stiffness
2. Malleability
3. Creep resistance
4. Tensile strength

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