1. The greatest expression of the lac operon occurs when lactose levels are _____.
Answer
Correct Answer:
High glucose concentrations prevent the transport of lactose into the cell
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2. The scientific method begins by making _________ about the world around us.
Answer
Correct Answer:
Observations
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3. Adding bile to triglycerides _______.
Answer
Correct Answer:
Increases the surface area of the triglycerides
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4. The volume in the pump when the pump piston is all the way down represents the _______.
Answer
Correct Answer:
End systolic volume
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5. The element in this list with chemical properties similar to magnesium is ________.
Answer
Correct Answer:
Strontium
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6. Maltose is a _______.
Answer
Correct Answer:
Disaccharide
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7. Glycerophospholipids can interact both with other lipids and water because they contain ________.
Answer
Correct Answer:
Polar regions; nonpolar regions
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8. The hardest known natural material is _____.
Answer
Correct Answer:
Diamond
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9. All of the following alloying elements of steel increases hardness but sacrifice ductility, except
Answer
Correct Answer:
Nickel
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10. In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)
Answer
Correct Answer:
T = 15 - 0.0065 h
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11. What is the value of included angle of a triangular notch for maximum discharge?
Answer
Correct Answer:
90°
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12. Larger length & diameter water pipes are made by
Answer
Correct Answer:
Semi-centrifugal casting.
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13. The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the
Answer
Correct Answer:
Curie temperature.
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14. Speisses is a mixture of the following:
Answer
Correct Answer:
Arsenides of heavy metals.
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15. Tin based white metals are used, where bearings are subjected to
Answer
Correct Answer:
High pressure & load.
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16. Fire refining process is employed in case of
Answer
Correct Answer:
Copper
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17. For separating small pieces of metal from engine oil of a car, the best separating technique is the
Answer
Correct Answer:
Filtration
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18. On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.
Answer
Correct Answer:
Frequency
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19. Friction factor for fluid flow in pipe does not depend upon the
Answer
Correct Answer:
Pipe length.
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20. Which one of the following is incombustible?
Answer
Correct Answer:
CCl4
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21. Chromium molybdenum steel can not be welded using __________ welding.
Answer
Correct Answer:
Electrical resistance
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22. Baffles provided on the shell side of a shell and tube heat exchanger are meant for
Answer
Correct Answer:
Providing support for the tubes & preventing the fouling of tubes & stagnation of shell side fluid.
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23. Auto collimator is used to check
Answer
Correct Answer:
Angle
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24. Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of
Answer
Correct Answer:
90% tungsten carbide and 10% cobalt.
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25. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
Answer
Correct Answer:
Aluminium oxide
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26. Fog is an example of colloidal system of
Answer
Correct Answer:
Liquid dispersed in gas.
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