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Argon is used in arc welding because...

Argon is used in arc welding because

A

low reactivity with metal

B

ability to lower the melting point of metal

C

flammability

D

high calorific value

Text Solution

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The correct Answer is:
A
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The hydrocarbon used for welding purpose is

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other Interatomic Interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers +2,+4 and +6. XeF_4 reacts violently with water to give XeO_3 The compound of xenon exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs in the valence shell. Argon is used In arc welding because of its:

Knowledge Check

  • The noble gases have closed- shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other interatomic interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation number +2,+4 and +6. XeF_(4) reacts violently with water to give XeO_(3) . The compound of xenon exhibit rich sterochemistry and their geometries can be deduced considring the total number of electron pairs in the valence shell. Argon is used in arc welding because of its:

    A
    low reactivity with metal
    B
    ability to lower the melting point of metal
    C
    flammability
    D
    high calorific value

  • The noble gases have closed-shell electronic cordigaration and are monatomic gases under normal condition .The low bolling points of the ligher noble gases aree due to the weak dispersion points of the ligher noble gases an due to the weak dispersion forces between the atoms and the alsence of other interalumic interactions. The direct reaction of xenon with flarine loads to a series of compounds with water oxidation number +2, - 4 and +6, XeF_(4) reactsviolenatly with water to give XeO_(2) .The compound of deduced axbibt nci strouchemistry and their goometries can be deduced considering the total number of electron puirs in the valence shell. Argon is used in arc welding because of its

    A
    a.low reactivity with metals
    B
    b.ability to lower the melting point of metals
    C
    c.flammability
    D
    d.high calorific value

  • S_(1): Argon is used in arc welding of metals or alloys to provide an inert atomosphere. S_(2):" XeF_(2),XeF_(4) and XeF_(6) are colourless crystalline solids and sublime readily at 298K . S_(3):XeF_(2),XeF_(4) and XeF_(6) are readily hydrolysed. S_(4): Xenon fluorides react with flourine ion acceptor to form cationic species and fluoride ion donors to form fluoro anions.

    A
    `F F F F `
    B
    `T F T F`
    C
    `T T T T`
    D
    `F T F T `

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