Chemistry MCQs

Page No. 116

Which of the following methods is used to estimate hydrogen in an organic compound ?


aCombustion method


bDumas method


cKjeldahls method


dAll of the above methods are for different purposes


View Answer Combustion method

Isotopes differ in_________________?


aproperties which depend upon mass


barrangement of electrons in orbitals


cchemical properties


dall of the above



Combustion analysis is performed to determine__________________?


aEmpirical formula


bMolecular mass


cMolecular formula


dFormula mass


View Answer Empirical formula

Qualitative analysis is carried out for _________________?


aidentification of elements


bestimation of amounts of elements


cmolar ratio of elements


dmolar volume of elements



Which of the following statements is wrong about isotopes ?


athey possess different mass number


bthey possess different physical properties


cthey possess same chemical properties


dthey possess different position in the periodic table



The mass of decimole of electrons (NA) is___________________?


a1.008 mg


b0.184 mg


c0.054 mg


d5.4 mg


View Answer 0.054 mg

Which one of the following is not the mono isotopic element ?


aarsenic


buranium


ciodine


dnickel


View Answer uranium

Which of the following terms is used for the mass of chlorine 35.5 ?


arelative atomic mass


bmass number


catomic weight


drelative isotopic mass


View Answer relative atomic mass

Size of molecule depends upon________________?


aAtomicity


bShape of molecule


cBoth A and B


dDifficult to predict


View Answer Both A and B

Avogadros number may represent_________________?


avolume of particles


bnumber of particles


cmass of particles


dAll of the above


View Answer All of the above

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