p-Block Elements  MCQs

MCQs of p-Block Elements

Showing 71 to 80 out of 173 Questions
5 6 7 8 9 10
71.
What is the other name of Halic (VII) acid ?
(a) Halic acid
(b) Hypohalous acid
(c) Halous acid
(d) Perhalic acid
Answer:

Option (d)

72.
State the correct order of acidic strength.
(a) HOClO < HOCl < HOClO3 < HOClO2
(b) HOClO2 < HOClO3 < HOClO < HOCl
(c) HOClO3 < HOClO2 < HOClO < HOCl
(d) HOCl < HOClO < HOClO2 < HOClO3
Answer:

Option (d)

73.
Which of the following is the strongest acid ?
(a) H2SO4
(b) HClO3
(c) HClO4
(d) H2SO3
Answer:

Option (c)

74.
With which of the following is the composition of XeF2 identical ?
(a) TeF2
(b) ICl2-
(c) SbCl3
(d) BaCl2
Answer:

Option (b)

75.
What is the final product in the hydrolysis of XeF6 ?
(a) XeF4O
(b) XeF2O2
(c) XeO3
(d) XeO3-
Answer:

Option (c)

76.
Which of the following compound has a square pyramidal structure ?
(a) XeO3
(b) XeF6
(c) XeOF4
(d) XeF4
Answer:

Option (c)

77.
What will be the product when xenon and fluorine gases react at 400ºC ?
(a) XeF2
(b) XeF6
(c) Xenon being an inert gas does not react with fluorine.
(d) XeF4
Answer:

Option (a)

78.
The numbers of lone pairs of electrons on Xe atom in XeF2, XeF4 and XeF6 are respectively _____ .
(a) 2, 3, 1
(b) 1, 2, 3
(c) 4, 1, 2
(d) 3, 2, 1
Answer:

Option (d)

79.
State respectively the shape of XeO3 and the number of non-bonding pairs of electrons on xenon.
(a) Square planar, 1
(b) Triangular pyramidal, 1
(c) Triangular pyramidal, 2
(d) Tetrahedral, 2
Answer:

Option (b)

80.
What is the formula of Apatite mineral ?
(a) Ca9(PO4)6•CaF2
(b) Ca9(PO4)6•Ca(X)2
(c) Ca9(PO4)6•CaCl2
(d) All of these
Answer:

Option (d)

Showing 71 to 80 out of 173 Questions
5 6 7 8 9 10