Chemical Engineering Basics Quiz 5
1 / 50
Enzymes belong to the category of_______?
2 / 50
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always______?
3 / 50
Fibre glass is a composite material of__________?
4 / 50
Heat required to raise the temperature of a body by 1 ?C is called its________?
5 / 50
Energy to be supplied to the radioactive nucleus for the emission of a neutron is _________ MeV?
6 / 50
Gage pressure within a spherical droplet of a fluid is ?p?. What will be gage pressure within a bubble of the same size & of the same fluid ?
7 / 50
For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be_____?
8 / 50
Heat flow across a hollow sphere of inner radius ?r1? and outer radius ?r2? is directly proportional to___________?
9 / 50
Elimination of brittleness resulting from welding of saw blades is done by ___________ of the welded portion ?
10 / 50
Glass reacts with_____?
11 / 50
Fahrenheit and Centigrade scales have the same readings at _______?
12 / 50
Euler number is defined as the ratio of inertia force to ________ force?
13 / 50
For separating small pieces of metal from engine oil of a car, the best separating technique is the _______ ?
14 / 50
For infinite parallel planes having emissivities ?1 & ?2, the interchange factor for radiation from surface 1 to surface 2 is given by___________?
15 / 50
Globular form of cementite is formed during the __________ process ?
16 / 50
Ferromagnetic materials owe their properties to ___________ inner sub-shells ?
17 / 50
Force between the molecules of the same substance is called ________ force?
18 / 50
Fog is an example of colloidal system of_____?
19 / 50
Fine grained steels have______?
20 / 50
For a first order chemical reaction, the concentration of the reactant decreases ___________ with time?
21 / 50
For dynamic strain measurement, the Wheatstone bridge used is of _______ type ?
22 / 50
Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother ?
23 / 50
Hardening of steel is not possible, unless it is heated __________ critical point ?
24 / 50
For grinding of softer materials, the grinding wheel should have __________ grain size ?
25 / 50
Electrostatic separation of minerals from each other is based on their differences in the following property ?
26 / 50
Glycerine is used as a coolant in cooling of some engines instead of water, because_____?
27 / 50
Half life of a radioactive isotope corresponds to the time required for half of the ________ to decay ?
28 / 50
Heat release during phase change is observed in case of a/an__________?
29 / 50
For the Stoke?s law to be valid in the case of a falling sphere in a fluid, the_______?
30 / 50
Factor of safety in machine design is defined as the ratio of ultimate stress to ______ stress ?
31 / 50
Function of gear box is to______?
32 / 50
Energy of the sun arises mainly from ___________ reactions?
33 / 50
Exposure to __________ accelerates the degradation of plastics?
34 / 50
Ganister contains maximum percentage of__________?
35 / 50
Fatigue resistance of a material is measured by the _______?
36 / 50
For the irreversible reaction, Ca+ 2C = Ca C2 , ? H?298 = ? 60000 J . mole-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be___________?
37 / 50
Evaporative cooling process employs a combination of cooling and humidification in which the______?
38 / 50
Eutectoid composition of carbon steel at room temperature is_____?
39 / 50
Function of fusible plug in a boiler is to ________?
40 / 50
For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot ?
41 / 50
Gross national product (GNP) means the total value of ________ in a country ?
42 / 50
Friction factor for fluid flow in pipe does not depend upon the_________?
43 / 50
Fire refining process is employed in case of_____?
44 / 50
Electrometallurgy is not involved in the extraction of _____ from its ore?
45 / 50
Good design of the casing of a centrifugal pump aims at minimising the _____?
46 / 50
Gas turbine normally employs a constant ________ cycle?
47 / 50
Faraday?s law of electrolysis is related to the______?
48 / 50
For an ideal gas, Cp ? Cv is______?
49 / 50
Gantt charts are used for streamlining the___________?
50 / 50
For preparation of porous bearings by powder metallurgy, preferred particle shape is_____?
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