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Free download in PDF Class 11 Chemistry Chapter 11 The P Block Elements Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER, IIT-JEE, AIEE and other competitive exams. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. These short solved questions or quizzes are provided by Gkseries./p>
(1)
In the compound of type ECl3, where E = B, P, As, or Bi, the angle Cl – E – Cl for different E are ion the order:
[A]
B > = P = As = Bi
[B]
B > P > As > Bi
[C]
B < P = As = Bi
[D]
B < P < As < Bi
(2)
On heating ozone, its volume.
[A]
Increase to 1.5 times
[B]
Decreases to half
[C]
Remain uncharged
[D]
Becomes double
Answer: Increase to 1.5 times
(3)
In general, the Boron Trihaides act as
[A]
Strong reducing agent
[B]
Lewis Acids
[C]
Lewis Bases
[D]
Dehydrating Agents
(4)
Inert gases such as helium behave like ideal gases over a wide range of temperature .However; they condense into the solid state at very low temperatures. It indicates that at very low temperature there is a
[A]
Weak attractive force between the atoms
[B]
Weak repulsive force between the atoms
[C]
Strong attractive force between the atoms
[D]
Strong repulsive attractive between the atoms
Answer: Strong attractive force between the atoms
(5)
Ammonia gas can be dried by
[A]
conc H2SO4
[B]
P2O5
[C]
CaCl2
[D]
Quick lime
(6)
Which of the statement is true for the above sequence of reactions?
[A]
Z is hydrogen
[B]
X is B2H6
[C]
Z and Y are F2 and B2H6 respectively
[D]
Z is Potassium Hydroxide
Answer: Z and Y are F2 and B2H6 respectively
(7)
If Cl2 gas is passed in to aqueous solution of Kl containing some CCl4 and the mixture is shaken then:
[A]
Upper layer becomes violet
[B]
Lower layer becomes violet
[C]
Homogenous violet layer is formed
[D]
None of these
Answer: Upper layer becomes violet
(8)
Which of the following has least covalent P−H bond?
[A]
PH+4
[B]
P2H+5
[C]
P2H2+6
[D]
PH3
(9)
K2[Hgl4] detect the ion/group :
[A]
NH2
[B]
NO
[C]
NH2+
[D]
Cl–
(10)
Which of the following statements regarding ozone is not correct?
[A]
The oxygen-oxygen bond length in ozone is identical with that of molecular oxygen
[B]
The ozone is response hybrid of two structures
[C]
The ozone molecule is angular in shape
[D]
Ozone is used as a germicide and disinfectant for the purification of air.
Answer: The oxygen-oxygen bond length in ozone is identical with that of molecular oxygen
(11)
When excess of Kl is added to copper sulphate solution:
[A]
Cuprous iodide is formed
[B]
l2 is liberated
[C]
Potassium iodide is oxidized
[D]
All
(12)
Which of the following oxidation states are most characteristic for lead and tin respectively?
[A]
2, 2
[B]
4, 2
[C]
2, 4
[D]
4, 4
(13)
Among the C-X bond (where, X = Cl, Br, l) the correct decreasing order of bond energy is
[A]
C−I > C−Cl > C−Br
[B]
C−I > C−Br > C−Cl
[C]
C−Cl > C−Br > C−I
[D]
C−Br > C−Cl > C−I
Answer: C−Cl > C−Br > C−I
(14)
In the upper layers of atmosphere ozone is formed:
[A]
By action of electric discharge on oxygen molecule
[B]
By action of ultraviolet rays on oxygen molecule
[C]
By action of infrared rays on oxygen molecule
[D]
Due to sudden drops of pressure
Answer: By action of ultraviolet rays on oxygen molecule
(15)
Oxygen gas can be prepared from solid KMnO4 by:
[A]
Dissolving the solid in dil. HCl
[B]
Dissolving the solid in conc. H2SO4
[C]
Treating the solid with H2 gases
[D]
Strongly heating the solid
Answer: Strongly heating the solid
(16)
Which is not the correct statement for Boron?
[A]
It exhibits Allotropy
[B]
It exists in both crystalline and Amorphous form
[C]
It forms solid chlorides
[D]
It forms volatile hydrides.
Answer: It forms solid chlorides
(17)
The structure of diBorane contains
[A]
Four 2c – 2e bonds and two 3c – 2e bonds
[B]
Two 2c – 2e bonds and two 3c – 2e bonds
[C]
Two 2c – 2e bonds and two 3c – 3e bonds
[D]
Four 2c – 2e bonds and four 3c – 2e bonds
Answer: Four 2c – 2e bonds and two 3c – 2e bonds
(18)
Which of the following statement is correct?
[A]
Copper (I) metaborate is colourless
[B]
Copper (II) metaborate is colourless
[C]
Copper (II) metaborate is light green
[D]
Copper (I) metaborate is dark green
Answer: Copper (I) metaborate is colourless
(19)
Which of the following will not produce hydrogen gas?
[A]
Reaction between Fe and dil. HCl
[B]
Reaction between Zn and NaOH
[C]
Reaction between Zn and conc. H2SO4
[D]
Electrolysis of NaCl in Nelsons cell
Answer: Reaction between Zn and conc. H2SO4
(20)
Red phosphorus is chemically less reactive because
[A]
It does not contain P – P bonds
[B]
It dos not contain tetrahedral P4 molecules
[C]
It does not catch fire in air even upto 400°C
[D]
It has a polymeric structure
Answer: It has a polymeric structure
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