NEET-XII-Chemistry

Previous Year Paper year:2021

with Solutions - page 4
Qstn# A-49 Prvs-QstnNext-Qstn
  • #49
    In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
    (A) \( HF < HCl < HBr < HI \) : Increasing acidic strength

    (B) \( H _{2} O < H _{2} S < H _{2} Se < H _{2} Te \) : Increasing \( pK_{a} \) values
    (C) \( NH _{3}< PH _{3} < AsH _{3}< SbH _{3} \) : Increasing acidic character
    (D) \( CO _{2}< SiO _{2} < SnO _{2}< PbO _{2} \) : Increasing oxidizing power
    digAnsr:   B
    Ans : B