Chemistry MCQs

Page No. 75

Which of the following is a macro nutrient ?


aboron


biron


ccopper


dcarbon


View Answer carbon

Ka<10-3 means______________?


aVery strong base


bVery weak acid


cVery strong acid


dVery strong salt


View Answer Very weak acid

Idea of pH and pOH was put forward by________________?


aGibbs


bEinstein


cSorenson


dChadwick


View Answer Sorenson

When the value of Kc is very small then_______________________?


areaction is at start


bproduct conc. Is maximum


cproduct conc. Is minimum


dreaction is completed



In case of gases Kc is replaced by_______________?


aka


bkb


ckp


dk


View Answer kp

At start of reaction the concentration of reactants is_______________?


ahigh


blow


caccording to Kc


dconstant


View Answer high

Chemical equilibrium state is_______________?


adynamic state


bstatic state


cfree state


dunidirectional state


View Answer dynamic state

Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?


a0.0002M HCI


b0.2 mole of NaCI with 0.2 mole of HNO3


c0.4 mole of CH3COOH with 0.4 mole of NaOH


d0.4 mole of NH3 with 0.2 mole of HCI



Which of following is not a base______________?


aKOH


bNH3


cPH3


dBF3


View Answer BF3

In which of the following equilibria will Kc and Kp have the same value ?


aPCI5 = PCI3 + Cl2


bN2 + 3H2 = 2NH


c2CO + O2 = CO2


dN2 + O2 = 2NO


View Answer N2 + O2 = 2NO

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