Chemistry MCQs

Page No. 75

Which of the following is a macro nutrient ?


aboron

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biron

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ccopper

✖


dcarbon

✓


View Answer carbon

Ka<10-3 means______________?


aVery strong base

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bVery weak acid

✓


cVery strong acid

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dVery strong salt

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View Answer Very weak acid

Idea of pH and pOH was put forward by________________?


aGibbs

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bEinstein

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cSorenson

✓


dChadwick

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View Answer Sorenson

When the value of Kc is very small then_______________________?


areaction is at start

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bproduct conc. Is maximum

✓


cproduct conc. Is minimum

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dreaction is completed

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In case of gases Kc is replaced by_______________?


aka

✖


bkb

✖


ckp

✓


dk

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View Answer kp

At start of reaction the concentration of reactants is_______________?


ahigh

✓


blow

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caccording to Kc

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dconstant

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View Answer high

Chemical equilibrium state is_______________?


adynamic state

✓


bstatic state

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cfree state

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dunidirectional state

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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

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b0.2 mole of NaCI with 0.2 mole of HNO3

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c0.4 mole of CH3COOH with 0.4 mole of NaOH

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d0.4 mole of NH3 with 0.2 mole of HCI

✓



Which of following is not a base______________?


aKOH

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bNH3

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cPH3

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dBF3

✓


View Answer BF3

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


aPCI5 = PCI3 + Cl2

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bN2 + 3H2 = 2NH

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c2CO + O2 = CO2

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dN2 + O2 = 2NO

✓


View Answer N2 + O2 = 2NO

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