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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : The p-Block Elements

    Multiple Choice Questions

    191.

    There is no S-S bond in :

    • S2O42-

    • S2O52-

    • S2O32-

    • S2O72-

    Answer
    • 192.

    Which statement is wrong for NO ?

    • It is anhydride of nitrous acid

    • Its dipole moment is 0.22 D

    • It forms dimer

    • It is paramagnetic

    Answer
    • 193.

    The number of S - S bonds in sulphur trioxide trimer (S3O9) is

    • three

    • two

    • one

    • zero

    Answer
    • 194.

    HF is not preserved in glass bottle because :

    • it reacts with the visible part of the light

    • it reacts with the sodium oxide of the glass

    • it reacts with the aluminium oxide of the glass composition

    • it reacts with SiO2 of the glass

    Answer
    • 195.

    What is the correct relationship between the pHs of isomolar solutions of sodium oxide (pH1), sodium sulphide (pH2), sodium selenide (pH3) and sodium telluride (pH4)?

    • pH1 > pH2 = pH3 =pH4

    • pH1 <pH2 < pH3 <pH4

    • pH1 < pH2 > pH3< pH4

    • pH1> pH2 > pH3 > pH4

    Answer
    • 196.

    Which acid has P - P linkage?

    • Hypophosphoric acid

    • Pyrophosphoric acid

    • Metaphosphoric acid

    • Orthophosphoric acid

    Answer
    • 197.

    Which of the following is not hydrolysed ?

    • AsCl3

    • PF3

    • SbCl3

    • NF3

    Answer
    • 198.

    End product of the hydrolysis of XeF6 is :

    • XeOF4

    • XeO2F2

    • XeO3

    • XeOF3

    Answer
    • 199.

    When fluorine reacts with hot and conc. NaOH , it gives :

    • Na2O

    • Na

    • H2

    • O2

    Answer
    • 200.

    XeF6 on complete hydrolysis produces

    • XeOF4

    • XeO2F2

    • XeO3

    • XeO2

    Answer
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