p-Block Elements MCQs | Question – Paper 2 1

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Topic: p-Block Elements, Test No.: 02, Total MCQs: 15

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Question 1

Which of the following statements is not valid for oxoacids of phosphorus? [CBSE AIPMT 2012]

A
All oxoacids contain tetrahedral four coordinated phosphorus
B
All oxoacids contain at least one P = O unit and one P – OH group
C
Orthophosphoric acid is used in the manufacture of triple superphosphate
D
Hypophosphorous acid is a diprotic acid
Question 2

Sulphur trioxide can be obtained by which of the following reaction [CBSE AIPMT 2012]

A

S + H2SO4  

B

H2SO4 + PCl3  

C

CaSO4 + C

D

Fe2 (SO4)3

Question 3

Argon is used [Karnataka CET 2009]

A
To obtain low temperature
B
In high temperature welding
C
In radio therapy for treatment of cancer
D
In filling airships
Question 4

The function of Fe(OH)3 in the contact process is [Karnataka CET 2009]

A
to detect colloidal impurity
B
to remove moisture
C
to remove dust particles
D
to remove arsenic impurity
Question 5

Of the following compounds the most acidic is [West Bengal JEE 2009]

A

As2O3

B

P2O5

C

Sb2O3

D

Bi2O3

Question 6

Atoms in a P4 molecule of white phosphorus are arranged regularly in the following way [West Bengal JEE 2009]

A
at the corners of the cube
B
at the corners of the octahedron
C
at the corners of a tetrahedron
D
at the centre and corners of a tetrahedron
Question 7

Aqueous solution of Na2S2O3 on reaction with Cl2 gives [IIT-JEE 2008]

A

Na2S4O6

B

NaHSO4

C

NaCl

D

NaOH

Question 8

The angular shape of ozone molecules (O3) consists of [CBSE AIPMT 2008]

A
2 sigma and 1 pi bonds
B
1 sigma and 2 pi bonds
C
2 sigma and 2 pi bonds
D
1 sigma and 2 pi bonds
Question 9

Which one of the following arrangement does not give the correct picture of the trends indicated against it? [CBSE AIPTM 2008]

A

F2 > Cl2 > Br2 > I2 : Electron gain enthalpy

B

F2 > Cl2 > Br2 > I2 : Bond dissociation energy

C

F2 > Cl2 > Br2 > I2 : Electronegativity

D

F2 > Cl2 > Br2 > I2 : Oxidizing power

Question 10

Four species are listed below:

(i) HCO3-

(ii) H3O+

(iii) HSO4-

(iv) HSO3F

Which one of the following is the correct sequence of their acidic strength? [AIEEE 2008]

A
iii < I < iv < ii
B
iv < ii < iii < i
C
ii < iii < I < iv
D
i < iii < ii < iv
Question 11

Helium is used in balloons in place of hydrogen because it is [Karnataka CET 2008]

A
incombustible
B
more abundant than hydrogen
C
radioactive
D
lighter than hydrogen
Question 12

Which is most easily liquefiable rare gas? [Karnataka CET 2008]

A
Xe
B
Ne
C
Ar
D
Kr
Question 13

Which one of the following orders correctly represents the increasing acid strengths of the given acids? [CBSE AIPMT 2007]

A

HOClO2 < HOClO3 < HOClO < HOCl

B

HOClO < HOCl < HOClO3 < HOClO2

C

HOClO3 < HOClO2 < HOClO < HOCl

D

HOCl < HOClO < HOClO2 < HOClO3

Question 14

Regular use of which of the following fertilizers increases the acidity of the soil? [AIEEE 2007]

A
Ammonium sulphate
B
Superphosphate of lime
C
Urea
D
Potassium nitrate
Question 15

The percentage of p-character in the orbitals forming P - P bonds in P4 is [IIT-JEE 2007]

A
25
B
33
C
50
D
75
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One thought on “p-Block Elements MCQs | Question – Paper 2”

  • Reply ↓
    Sanath Kumar S

    Plz review q no. 9 as electron gain enthalpy of Chlorine is higher than that of Fluorine. Therefore both options 1 and 2 are correct.