Chemistry MCQs

Page No. 117

The sample of isotopes of an element which needs not to be vaporized in the vaporization chamber_________________?


aGas

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bLiquid

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cVolatile solid

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dAll

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View Answer Gas

Which of the following ion formation is always exothermic ?


aUni-negative

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bUni-positive

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cDi-negative

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dDi-positive

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Which one is true about isotope ?


aSame number of neutrons

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bSame mass number

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cSame physical properties

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dSame chemical properties

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Molecular ions are formed by passing______________________?


aHigh energy electron beam

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b? – particle

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cX-rays

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dAll of the above

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View Answer All of the above

Which of the following are isoelectronic species ?


aH+ H H-

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bLi+ Na+ K+

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cC1- Br- I

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dF- Ne Na+

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View Answer F- Ne Na+

1 a.m.u =__________________?


a1.6 x 10-27 kg

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b1.6 x 10-24 kg

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c1.6 x 10-26 kg

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d1.6 x 10-28 kg

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View Answer 1.6 x 10-27 kg

The properties of an element mosly corresponds to that isotope which has greater_________________?


aMass number

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bAtomic mass

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cRelative abundance

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dall of the above

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View Answer Relative abundance

For which of the following compounds the term empirical formula cannot be applied ?


aNaCl

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bH2O

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cCCL4

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dIt can be applied to all mentioned above

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When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?


alighter

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bintermediate

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cheavier

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dare collected at same time

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View Answer lighter

Isotopes of the same elements has__________________?


adifferent number of protons

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bsame number of neutrons

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cdifferent number of neutrons

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dsame mass number (nucleon number)

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