Chemistry MCQs

Page No. 90

Fluted filter paper is used to__________________?


aFilter hot solution

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bAvoid premature crystallization

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cIncrease the rate of filtration

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dDecrease the area

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Which of the following technique is used for the separation of insoluble particles from liquids ?


aFiltration

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bCrystallization

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cSolvent extraction

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dChromatography

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View Answer Filtration

Which of the following way in used for classification of chromatography ?


aShape

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bPhase

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cMechanism

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dAll

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View Answer All

Neutrons moving with an energy of 1.2 MeV are called_______________?


aFast neutrons

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bSlow neutrons

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cModerate neutrons

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dAll are possible

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View Answer Fast neutrons

When 6d orbital is complete the entering electron goes into_________________?


a7f

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b7s

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c7p

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d7d

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View Answer 7p

Centrifugal forces are balanced in atom by__________________?


aAttractive forces

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bRepulsive forces

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cElectrons

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dNeutrons

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View Answer Attractive forces

_______________ can expel proteons from paraffins ?


aElectron

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bProton

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cNeutron

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dNone of above has such capability

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View Answer Neutron

Quantum number which tells the energy of electron is________________?


an

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b1

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cm

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ds

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View Answer n

Wavelength of electron was verified by_________________?


aMoseley

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bDavisson and Germer

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cEinstein

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dRoentgen

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View Answer Davisson and Germer

Sommerfelds modification in Bohrs model is_______________?


aOrbit is cylindrical

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bOrbit is elliptical

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cOrbit is longitudinal

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dOrbit is asymmetrical

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View Answer Orbit is elliptical

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