Chemical Engineering Basics Quiz 5

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

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

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

Fire refining process is employed in case of_____?

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

Gas turbine normally employs a constant ________ cycle?

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

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

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 ?

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

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

Fatigue resistance of a material is measured by the _______?

Gantt charts are used for streamlining the___________?

Ganister contains maximum percentage of__________?

Energy of the sun arises mainly from ___________ reactions?

Function of gear box is to______?

Fibre glass is a composite material of__________?

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 ?

Exposure to __________ accelerates the degradation of plastics?

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

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

Glass reacts with_____?

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

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

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

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

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___________?

For an ideal gas, Cp ? Cv is______?

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

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

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

Fine grained steels have______?

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

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

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

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

Fog is an example of colloidal system of_____?

Faraday?s law of electrolysis is related to the______?

Fahrenheit and Centigrade scales have the same readings at _______?

Eutectoid composition of carbon steel at room temperature is_____?

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

Function of fusible plug in a boiler is to ________?

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

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 ?

Enzymes belong to the category of_______?

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

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

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

Globular form of cementite is formed during the __________ process ?

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