p-Block Elements  MCQs

MCQs of p-Block Elements

Showing 101 to 110 out of 173 Questions
8 9 10 11 12 13
101.
What is the formula of salt prepared by the reaction between NaOH and hypophosphorous acid ?
(a) NaH2PO2
(b) Na2HPO2
(c) Na3PO2
(d) Na3PO3
Answer:

Option (b)

102.
Which one is not a P - block element ?
(a) Sr
(b) Po
(c) As
(d) Ga
Answer:

Option (a)

103.
Which is the possible oxidation state in the different compounds of Nitrogen ?
(a) -3 to +5
(b) -3 to +3
(c) -3 to +4
(d) -3 to +6
Answer:

Option (a)

104.
Which of the following molecule/ion do not have all the identical bond ?
(a) SiF4
(b) XeF4
(c) BF4-
(d) SF4
Answer:

Option (d)

105.
Continuous use of which fertilizer increase the acidity of soil ?
(a) Urea
(b) Super phosphate of lime
(c) Ammonium sulphate
(d) None of these
Answer:

Option (c)

106.
Which is the correct increasing acidity order of oxo acids ?
(a) HOClO < HOCl < HOClO3 < HOClO2
(b) HOClO2 < HOClO < HOClO4 > HOClO3
(c) HOClO3 < HOClO2 < HOClO < HOCl
(d) HOCl < HOClO < HOClO2 < HOClO3
Answer:

Option (d)

107.
Which product is obtained by the reaction between Na2S2O3 and Cl2 gas ?
(a) Na2S4O6
(b) NaHSO4
(c) NaCl
(d) NaOH
Answer:

Option (b)

108.
Which of the following have maximum number P - H bond ?
(a) H3PO2
(b) H3PO3
(c) H3PO4
(d) H4P2O7
Answer:

Option (a)

109.
What is not correct for SO2(g) ?
(a) It is angular in shape
(b) both S - O bonds are same
(c) It decolorise the KMnO4 solution
(d) It is dehydrating agent
Answer:

Option (d)

110.
Which product is given by sulphur trioxide on dissolution in to a sulphuric acid ?
(a) H2SO3
(b) H2SO5
(c) H2S2O7
(d) H2S2O8
Answer:

Option (c)

Showing 101 to 110 out of 173 Questions
8 9 10 11 12 13