Chemical Engineering Basics

841. With increase in temperature, the electrical conductivity of semiconductors

1. Increases
2. Decreases
3. Remain constant
4. Either (A) or (B), depends on the type of semi-conductor

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842. With increase in temperature, the surface tension of water

1. Increases
2. Decreases
3. Remain constant
4. Increases linearly

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843. With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

1. Impact strength
2. Percent elongation
3. Hardness
4. Both 'b' & 'c'

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844. Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

1. Creep
2. Fatigue
3. Endurance
4. Tensile

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845. Wood is a/an __________ material.

1. Amorphous
2. Cellular
3. Homogeneous
4. Granular

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846. Work done by a/an __________ process is determined by ∫p. dv

1. Adiabatic
2. Quasi-static
3. Isothermal
4. Isentropic

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847. Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

1. Manganese
2. Silicon
3. Nickel
4. Chromium

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848. Work required for compression of a gas contained in a cylinder is 7000 kJ. During compression, heat interaction of 3000 kJ causes the surroundings to be heated. Internal energy change of the gas during the compression is __________ kJ.

1. 4000
2. -4000
3. 10000
4. -10000

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849. Work study deals with the __________ study.

1. Time
2. Motion
3. Both (A) & (B)
4. Neither (A) nor (B)

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850. Working of linear variable differential transducer (LVDT) is based on the principle of variable

1. Capacitance
2. Resistance
3. Mutual inductance
4. None of these

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