Chemistry MCQs

Page No. 48

Metallic characters of alkali metals_____________________?


aIncrease down the group

✓


bDecrease down the group

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cNo regular trend

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dRemain same

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Addition of 2nd electron to a uni negative ion is always____________________?


aExothermic

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bEndothermic

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cData is insufficient

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dUnpredictable

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View Answer Endothermic

Ionization energy depends upon____________________?


aNuclear charge

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bAtomic size

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cShielding effect

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dI.E depends upon all of the above and nature of orbital

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Deuterium reacts with oxygen to form________________?


aHard water

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bHeavy water

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cSoft water

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dWater gas

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View Answer Heavy water

The property which increases upto group IV-A then decreases on wards_______________?


aIonization energy

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bAtomic radii

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cMelting & boiling points

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dAtomic volume

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Which discovery caused a revision in the periodic law as stated by Mendeleev ?


aLocation of nucleus by Rutherford

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bAtomic number by Moseley

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cX-rays by Roentgen

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dNatural radioactivity by Henry Bacquerel.

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Which one of the following is not a periodic property ?


aMelting point of elements

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bBoiling point of elements

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cIonization energy of elements

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dCoordination number of ions

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In which of the following pairs are elements belonging to the same group ?


aBoron & Beryllium

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bNitrogen & Phosphorous

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cMagnesium & Aluminium

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dGallium & Helium

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Hydrogen resembles with carbon because of having________________?


aSame number of electrons in the valence shell

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bSimilar physical state

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cRemarkable reducing properties

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dHomovalent (show same valency)

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Amphoteric exides are those which possess ____________ properties?


aAcidic

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bBasic

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cAcidic and basic

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dNeutral and acidic

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View Answer Acidic and basic

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