p-Block Elements  MCQs

MCQs of p-Block Elements

Showing 131 to 140 out of 173 Questions
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131.
Which of the following elements is not of p-block ?
(a) Sr
(b) Po
(c) As
(d) Ga
Answer:

Option (a)

132.
The number of single electron pairs 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)

133.
Which of the following compounds possesses tetrahedral shape ?
(a) XeF4
(b) SF4
(c) BF4-
(d) [Ni(CN)F4]2-
Answer:

Option (c)

134.
Mention the correct order of stability of dihalides of Si, Ge, Sn and Pb.
(a) GeX2 < SiX2 < SnX2 < PbX2
(b) SiX2 < GeX2 < PbX2 < SnX2
(c) SiX2 < GeX2 < SnX2 < PbX2
(d) PbX2 < SnX2 < GeX2 < SiX2
Answer:

Option (c)

135.
Which is the other name of halic (V) acid ?
(a) Perhalic acid
(b) Halic acid
(c) Hoypohalous acid
(d) Halus acid
Answer:

Option (b)

136.
What is used to obtain U235 ?
(a) ClF3
(b) BrF5
(c) IF5
(d) ClF
Answer:

Option (a)

137.
Mention the proper choice for the True and False statements. T for true and F is for False statements. (A) The ionisation enthalpies of the elements of Group-15 decreases with atomic number. (B) The oxidation states of antimony is +3 to +5. (C) Oxides of bismuth are not basic. (D) Phosphorous element form dπ-dπ bonds with transition metals.
(a) F F T T
(b) T F F T
(c) T F T F
(d) F T F T
Answer:

Option (b)

138.
Which of the following statement is wrong ?
(a) The stability of hydrides increases from NH3 to BiH3 in group 15 of the peiodic table.
(b) Nitrogen cannot  form dπ-pπ bond.
(c) Single N - N bond is weaker than the single P - P bond.
(d) N2O4 has two resonance strcture.
Answer:

Option (a)

139.
Which of the following statements regarding sulphur is incorrect ?
(a) S2 molecule is paramagnetic.
(b) The vapour at 200°C consists mostly of S8 rings.
(c) At 600°C the gas mainly consist of S2 molecules.
(d) The oxidation state of sulphur is never less than +4 in its compounds.
Answer:

Option (d)

140.
The structure of IF7 is
(a) square pyramid
(b) trigonal bipyramid
(c) octahedral
(d) pentagonal bipyramid
Answer:

Option (d)

Showing 131 to 140 out of 173 Questions
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