Chemistry MCQs

Page No. 111

The unit of the rate constant (k) is same as that of rate of reaction________________?


aFirst order reaction

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bSecond order reaction

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cZero order reaction

✓


dThirdorder reaction

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View Answer Zero order reaction

Which of the following elements react with steam to produce H2 gas?


aPd

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bNi

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cSn

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dAll of the above

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View Answer All of the above

Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?


a6

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b8

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c10

✓


d4

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View Answer 10

A solution can be both____________________?


adilute and concentrated

✓


bdilute and saturated

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csaturated and unsaturated

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dsaturated and super saturated

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The unit of molality is__________________?


amoles dm-3

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bmoles kg-1

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cgram dm-3

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dnone

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View Answer moles kg-1

Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?


a4.0 x 10-8

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b3.2 x 10-11

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c2.0 x 10-8

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d4.0 x 10-12

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View Answer 3.2 x 10-11

Which of the following points are important in connection with equilibrium constant ?


aKc is constant at given temperature

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bKc is unaffected by change in concentration of reactants or products

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cKc indicates the extent of reaction but not about the rate of reaction.

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dAll of the above

✓


View Answer All of the above

Which of the following molecule is polar__________________?


aCCl4

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bCO2

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cBF3

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dnone of the above

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View Answer none of the above

Which of the following elements has greater 1st ionization energy__________________?


aB

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bC

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cN

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dO

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View Answer N

Which catalyst is used in contact process ?


aFe2O3

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bV2O5

✓


cSO3

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dAg2O

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View Answer V2O5

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