Chemistry MCQs

Page No. 55

Radiations are absorbed in_______________?


aSpectrophotometer method


bDilatometric method


cOptical relation method


dRefractometric method



For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________?


aSingle


bSquare


cCube


dRaise to power four


View Answer Square

Rate of disappearance of reactant is equal to_________________?


aRate of reaction


bRate of formation of product


cEnergy released during reaction


dA and B


View Answer Rate of reaction

Unit of rate of reaction is_________________?


aMoles dm-3 sec-1


bMoles dm-3


cMoles sec-1


dMol-1 dm3 sec-1


View Answer Moles dm-3 sec-1

Spontaneous reactions are_______________?


aModerate


bSlow


cFast


dnot natural


View Answer Fast

The value of activation energy is primarily determined by_______________?


aTemperature


bEffective collision


cConcentration of reactants


dChemical nature of reactants and products


View Answer Effective collision

The specific rate constant of a first order reaction depends on the________________?


aTime


bConcentration of the reactant


cTemperature


dConcentration of the product


View Answer Temperature

The rate of reaction___________________?


aIncreases as the reaction proceeds


bDecreases as the reaction proceeds


cRemains the same as the reaction proceeds


dMay decrease or increase as the reaction proceeds



The sequence of zones in the rotary kiln are as____________________?


adry zone burning zone decomposition zone cooling zone


bcooling zone burning zone decomposition zone dry zone


cburning zone cooling zone decomposition zone


ddry zone decomposition zone burning zone cooling zone



Which one of the following raw material is not present in the cement ?


alime stone


bgypsum


cKNO3


diron oxide


View Answer iron oxide

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