Chemical Engineering Basics

41. __________ of hard alloy and tool steel is done to make it easily machinable.

1. Case carburising
2. Tempering
3. Normalising
4. Annealing

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42. __________ of test specimens is not involved in any hardness testing method.

1. Fracture
2. Indentation
3. Wear
4. Scratch

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43. __________ pipe is the most suitable for carrying sanitary drainage.

1. Stainless steel
2. Reinforced cement concrete
3. Cast iron
4. Asbestos cement

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44. __________ property of a material is determined by the Herbert Pendulum device.

1. Hardness
2. Tensile
3. Toughness
4. Compressive

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45. __________ property of steel increases by addition of large amount of silicon in it.

1. Mechanical
2. Machining
3. Magnetic
4. Refractory

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46. __________ remains constant during the adiabatic cooling of moist air.

1. Wet bulb temperature
2. Dry bulb temperature
3. Relative humidity
4. Specific humidity

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47. __________ rubber is generally used for making 'O' rings used for vacuum sealings.

1. Natural
2. Neoprene
3. Butadiene
4. Nitrile

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48. __________ stress cannot be sustained by a fluid in equilibrium.

1. Shear
2. Tensile
3. Compressive
4. None of these

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49. __________ temperature remains constant during adiabatic saturation process of unsaturated air.

1. Dew point
2. Dry bulb
3. Wet bulb
4. None of these

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50. __________ test can be termed as the semi-destructive test.

1. Impact
2. Torsion
3. Hardness
4. Charpy

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