Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 11 The p-Block Elements with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have provided The p-Block Elements Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.
Q.1 An aqueous solution of borax is
(a) Basic
(b) Acidic
(c) Neutral
(d) Amphoteric
(a) Basic
Q.2 Orthoboric acid when heated to red heat gives
(a) Metaboric acid
(b) Tetraboric acid
(c) Boron trioxide
(d) Borax
(c) Boron trioxide
Q.3 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
(a) Copper (I) metaborate is colourless
Q.4 Boric acid is polymeric due to
(a) Its acidic nature
(b) The presence of hydrogen bonds
(c) Its monobasic nature
(d) Its geometry
(b) The presence of hydrogen bonds
Q.5 Which of the following statements about boric acid is false?
(a) It acts as a monobasic acid
(b) It is formed by the hydrolysis of boron halides
(c) It has planar-structure
(d) It acts as a tribasic acid
(d) It acts as a tribasic acid
Q.6 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
(a) Four 2c – 2e bonds and two 3c – 2e bonds
Q.7 Graphite is soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite
(a) Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
(b) Is a non-crystalline substance
(c) Is an allotropic form of carbon
(d) Has molecules of variable molecular masses like polymers
(a) Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
Q.8 Diamond and graphite are
(a) Homologues
(b) Allotropes
(c) Isomers
(d) None of the above
(b) Allotropes
Q.9 Which of the following is the hardest substance known?
(a) Graphite
(b) Carborundum
(c) Diamond
(d) Coke
(c) Diamond
Q.10 Thermodynamically the most stable form of carbon is
(a) Diamond
(b) Graphite
(c) Peat
(d) Coal
(b) Graphite
Q.11 Amorphous form of Silica is
(a) Tridymite
(b) Kieselguhr
(c) Cristobalite
(d) Quartz
(c) Cristobalite
Q.12 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
(c) It forms solid chlorides
Q.13 Carbon forms a large number of compounds because it has
(a) Variable valency
(b) Low electron affinity
(c) High ionisation energy
(d) Property of catenation
(d) Property of catenation
Q.14 Which of the following allotropic forms of carbon is isomorphous with crystalline silicon?
(a) Graphite
(b) Coal
(c) Coke
(d) Diamond
(d) Diamond
Q.15 All the elements of oxygen family are
(a) Non metals
(b) Metalloids
(c) Radioactive
(d) Polymorphic
(d) Polymorphic
Q.16 In graphite electrons are
(a) Localised on every third atom
(b) Present in antibonding orbitals
(c) Localised on each carbon atom
(d) Spread out between the structure
(d) Spread out between the structure
Q.17 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
(b) By action of ultraviolet rays on oxygen molecule
Q.18 Percentage of lead in lead pencils is
(a) Zero
(b) 20
(c) 80
(d) 70
(a) Zero
Q.19 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
(c) C−Cl > C−Br > C−I
Q.20 Which of the following oxidation states are the most characteristic for lead & tin respectively
(a) +2, +2
(b) +4, +2
(c) +2, +4
(d) +4, +4
(c) +2, +4
Q.21 In white phosphorous(P4) molecule, which one is not correct:
(a) 6P-P single bonds are present
(b) 4P-P single bonds are present
(c) 4 lone pair of electrons is present
(d) P-P-P bond angle is 60°
(a) 6P-P single bonds are present
We hope the given NCERT MCQ Questions for Class 11 Chemistry Chapter 11 The p-Block Elements with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Chemistry The p-Block Elements MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.