Chemical Engineering Basics Quiz 5

Half life of a radioactive isotope corresponds to the time required for half of the ________ to decay ?

Faraday?s law of electrolysis is related to the______?

Electrometallurgy is not involved in the extraction of _____ from its ore?

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 ?

For an ideal gas, Cp ? Cv is______?

Heat flow across a hollow sphere of inner radius ?r1? and outer radius ?r2? is directly proportional to___________?

For preparation of porous bearings by powder metallurgy, preferred particle shape is_____?

Euler number is defined as the ratio of inertia force to ________ force?

Function of gear box is to______?

For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be_____?

Hardening of steel is not possible, unless it is heated __________ critical point ?

Globular form of cementite is formed during the __________ process ?

Good design of the casing of a centrifugal pump aims at minimising the _____?

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 ?

Energy of the sun arises mainly from ___________ reactions?

Eutectoid composition of carbon steel at room temperature is_____?

Glycerine is used as a coolant in cooling of some engines instead of water, because_____?

Fire refining process is employed in case of_____?

Gantt charts are used for streamlining the___________?

Gross national product (GNP) means the total value of ________ in a country ?

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 ?

Heat release during phase change is observed in case of a/an__________?

For infinite parallel planes having emissivities ?1 & ?2, the interchange factor for radiation from surface 1 to surface 2 is given by___________?

For dynamic strain measurement, the Wheatstone bridge used is of _______ type ?

Function of fusible plug in a boiler is to ________?

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always______?

For separating small pieces of metal from engine oil of a car, the best separating technique is the _______ ?

Gas turbine normally employs a constant ________ cycle?

Force between the molecules of the same substance is called ________ force?

Ganister contains maximum percentage of__________?

Elimination of brittleness resulting from welding of saw blades is done by ___________ of the welded portion ?

For the Stoke?s law to be valid in the case of a falling sphere in a fluid, the_______?

Evaporative cooling process employs a combination of cooling and humidification in which the______?

For grinding of softer materials, the grinding wheel should have __________ grain size ?

Enzymes belong to the category of_______?

Energy to be supplied to the radioactive nucleus for the emission of a neutron is _________ MeV?

Fine grained steels have______?

Fibre glass is a composite material of__________?

Glass reacts with_____?

Fatigue resistance of a material is measured by the _______?

Friction factor for fluid flow in pipe does not depend upon the_________?

Exposure to __________ accelerates the degradation of plastics?

Fahrenheit and Centigrade scales have the same readings at _______?

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___________?

Electrostatic separation of minerals from each other is based on their differences in the following property ?

Heat required to raise the temperature of a body by 1 ?C is called its________?

Ferromagnetic materials owe their properties to ___________ inner sub-shells ?

For a first order chemical reaction, the concentration of the reactant decreases ___________ with time?

Factor of safety in machine design is defined as the ratio of ultimate stress to ______ stress ?

Fog is an example of colloidal system of_____?