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In rule method the null set, is represen...

In rule method the null set, is represented by

A

`{x|x!=x}`

B

{x|x=x}

C

`phi`

D

{}

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Which method of purification is represented by the following equation? TiS+2I_2(g)rarrTil_4(g)rarri(s)+2I_2(g)

    A
    cupellation
    B
    poling
    C
    van arkel method
    D
    zone refining

  • Which one of the following sets of ions represents the collection of isoelectronic species?

    A
    `K^+, Cl^-, Mg^(2+), Sc^(3+)`
    B
    `Na^+, Ca^(2+), Sc^(3+), F^-`
    C
    `K^+, Ca^(2+), Sc^(3+), Cl^-`
    D
    `Na^+, Mg^(2+), Al^(3+), Cl^-`

  • Which one of the following sets of ions represents the collection of isoelectronic species?

    A
    `K^+, Cl^-, Mg^(2+), Sc^(3+)`
    B
    `Na^+, Ca^(2+), Sc^(3+), F^-`
    C
    `K^+, Ca^(2+), Sc^(3+), Cl^-`
    D
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