MCQ Questions Chapter 11 The p-Block Elements Class 11 Chemistry

Please refer to MCQ Questions Chapter 11 The p-Block Elements Class 11 Chemistry with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 11 Chemistry issued for the current academic year. We have provided MCQ Questions for Class 11 Chemistry for all chapters on our website. Students should learn the objective based questions for Chapter 11 The p-Block Elements in Class 11 Chemistry provided below to get more marks in exams.

Chapter 11 The p-Block Elements MCQ Questions

Please refer to the following Chapter 11 The p-Block Elements MCQ Questions Class 11 Chemistry with solutions for all important topics in the chapter.

MCQ Questions Answers for Chapter 11 The p-Block Elements Class 11 Chemistry

Question. Name of structure of silicates in which three oxygen atoms of [SiO₄]^4- are shared is 
(a) pyrosilicate
(b) sheet silicate
(c) linear chain silicate
(d) three dimensional silicate     

Question. With respect to graphite and diamond, which of the statement(s) given is (are) correct ?
(a) Graphite is harder than diamond
(b) Graphite has higher electrical conductivity than diamond
(c) Graphite has higher thermal conductivity than diamond
(d) Graphite has higher C—C bond order than diamond   

Question. Pb reacts with dilute HNO₃ produces
(a) NO
(b) NH₄NO₃
(c) N₂O₅   

Question. An oxide of an element is a gas and dissolves in water to give an acidic solution. The element belongs to
(a) II group
(b) IV group 
(c) VIII group
(d) zero group       

Question. Pyrosilicate ion is
(a) SiO₂^2-
(b) SiO₄^2-
(c) Si₂O₄6^–
(d) SiO₃^–
(e) Si₂O₇^6-     

Question. Producer gas is the mixture of
(a) CO + N₂
(b) CO+ H₂
(c) CO + water vapour
(d) N₂ + CH₄     

Question. The carbon based reduction method is not used for the extraction of
(a) tin from SnO₂
(b) iron from Fe₂O₃
(c) aluminium from AI₂O₃
(d) magnesium from MgCO₃ , CaCO₃     

Question. What product is formed on heating lead nitrate? 
(a) PbO + NO+ O₂
(b) PbO + NO₂ + O₂
(c) Pb + NO₂
(d) PbO + N₂       

Question. Among the following substituted silanes, the one which will give rise to cross linked silicon polymer on hydrolysis is 
(a) R₄Si
(b) RSiCI₃
(c) R₂SiCI₂
(d) R₃SiCl     

Question. Which one of the following elements reacts with steam ?
(a) C
(b) Ge 
(c) Si
(d) Sn     

Question. Dry ice is
(a) solid H₂O
(c) solid N₂O₄
(b) solid CO₂
(d) solid NH₃   

Question. Which type of silicate is shown in the given figure?

(a) Orthosilicate
(b) Pyrosilicate
(c) Metasilicate
(d) None of these

Question. Identify B in the following reaction, 
H₄SiO₄  →_-H20^1000°C A →_Δ^Carbon  B + CO 
(a) corundum
(b) quartz
(c) silica
(d) carborundum     

Question. The soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
(a) a change in the crystalline structure of tin
(b) an interaction with nitrogen of the air at very low temperature
(c) a change in the partial pressure of oxygen in the air
(d) an interaction with water vapour contained in the humid air       

Question. Which of the following does not contain silicon?
(a) Kaoline
(b) Agate 
(c) Ruby
(d) Quartz   

Question. Which of the following oxides is amphoteric in character?
(a) SnO₂
(b) SiO₂
(c) CO₂
(d) CaO   

Question. A metal, M forms chlorides in its + 2 and + 4 oxidation states. Which of the following statements about these chlorides is correct ? 
(a) MCI₂ is more volati le than MCl₄
(b) MCI₂ is more soluble in the anhydrous ethanol than MCI₄
(c) MCI₂ is more ionic than MCI₄
(d) MCI₂ is more easily hydrolysed than MCI₄         

Question. Which of the following is used for making optical instruments ?
(a) SiO₂
(b) Si
(c) SiH₄
(d) SiC     

Question. In silica (SiO₂), each silicon atom is bonded to
(a) two oxygen atoms
(b) four oxygen atoms
(c) one silicon and two oxygen atoms
(d) one silicon and four oxygen atoms     

Question. Diamond is hard because 
(a) all the four valence electrons are bonded to each carbon atom by covalent bonds
(b) it is a giant molecule
(c) it is made up of carbon atoms
(d) it cannot be burnt   

Question. Buclaninster fullerene is
(a) pure graphite
(c) diamond
(b) C-60
(d) C-90     

Question. A fibrous mineral which can withstand red hot flames without any damage is 
(a) talc
(b) glass wool
(c) soap stone
(d) asbestos     

Question. Which one of the following statements about the zeolites is false ? 
(a) They are used as cation exchangers
(b) They have open structure which enables them to take up small molecules
(c) Zeolites are alurninosilicates having three dimensional network
(d) Some of the SiO₄^4- units are replaced by AlO5^–₄ and AlO^9-₆ ions in zeolites 

Question. White lead is 
(a) PbCO₃ · PbO
(b) PbCO₃
(c) Pb(OH)₂ · 2PbCO₃
(d) PbSO₄ · PbO     

Question. Carborundum is
(a) SiC
(b) Al₂O₃ · H₂O
(c) Al₂(SO₄)₃
(d) AlCI₃         

Question. Silica is a/an 
(a) acidic flux only
(b) gangue only
(c) basic flux only
(d) Both gangue and acidic flux     

Question. What is the number of free electrons present on each carbon atom in graphite ? 
(a) 0
(b) 3
(c) 2
(d) 1   

Question. The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence 
(a) GeX₂ < SiX₂ < SnX₂ < PbX₂
(b) SiX₂ < GeX₂ < PbX₂ < SnX₂
(c) SiX₂ < GeX₂ < SnX₂ < PbX₂
(d) PbX₂ < SnX₂ < GeX₂ < SiX₂       

Question. Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that, graphite
(a) is a non-crystalline substance
(b) is an allotropic form of diamond
(c) bas molecules of variable molecular masses like polymers
(d) bas carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds       

Question. The composition of the common glass is 
(a) Na₂O-CaO · 6SiO₂
(b) Na₂O· Al₂O₃ · SiO₂
(c) CaO-Al₂O₃ -SiO₂
(d) Na₂O-CaO-6SiO₂       

Question. Which glass has the highest percentage of lead? 
(a) Soda glass
(b) Flint glass
(c) Jena glass
(d) Pyrex glass     

Question.

Silicate structure is unit of
(a)(Si₄O₁₁)_n^6n-
(b) (Si₂o₁₁)_n^2n-
(c) (Si₂O₃)
(d) (SiO₄)^-4

Question. Roasted tin stone ore after washing with water is known as
(a) block tin
(b) white tin 
(c) black tin
(d) granulated tin     

Question. The basic stmctural unit in silicates is 
(a) SiO₂
(b) [Si₂O₇]^2-
(c) SiO.t tetrahedron
(d) [Si₂O_5]^2-       

Question. CO is poisonous gas, antidote for CO poisoning is
(a) carborundw.n
(b) carbogen 
(c) carbonic acid
(d) pure oxygen   

Question. In SiF₆^2- and SiCl₆^2- which one is known and why?
(a) SiF₆^2- because of small size off
(b) SiF₆^2- because of large size off
(c) SiCI₆^2- because of small size of Cl
(d) SiCl₆^2- because of large size of Cl     

Question. One recently discovered allotrope of carbon (e.g. C₆₀) is known as
(a) fluorine
(b) fullerene
(c) flourene
(d) freon     

Question. Which of the following is not correct ? 
(a) SiO₂ is used as acidic flux
(b) The distance between the layers in graphite is 3.35x 10^-3 cm
(c) SiO₂ reacts with Na 2CO₃ and liberates CO
(d) The hybridisation of C in graphite is sp²       

Question. In the preparation of amorphous silicon, HF acid is used to remove 
(a) Mg
(b) SiO₂
(c) Si
(d) None of these     

Question. In feldspar and zeolite, Si⁴⁺ ions are replaced by which ions? 
(a) Oxide ion
(b) Hydroxide ion
(c) Aluminium ion
(d) Potassium ion       

Question. Which gas is used in aerated water ?
(a) CO₂
(b) SO₂
(c) CO
(d) Water vapours   

Question. Water gas is
(a) CO+ N₂
(b) CO+ CO₂ + CH₄
(c) CO₂ + N₂
(d) CO+ H₂     

Question. On controlled hydrolysis and condensation, R₃Si Cl yields
(a) R₃Si—O—SiR₃ 
(b) (—R3Si—O—SiR₃—)_n
(c) R₃SiOH
         R             R
          l              l
(d) — Si — O — Si —
          l              l 
         O             O
          l              l
     — Si — O — Si —  
          l              l         

Question. Buckminster-fullerene is a variety of 
(a) boron
(b) carbon
(c) ammonia
(d) fluorine     

Question. Which element is used for making a transistor? 
(a) Sn
(b) Sb
(c) Si
(d) Mg     

Question. CO₂ goes to air, causes green house effect and gets dissolved in water. What will be its effect on soil fertility and pH of the water? 
(a) Increase
(b) Decrease
(c) Remain same
(d) None of these         

Question. Solder is an alloy of lead with
(a) Cu
(b) Fe
(c) Sn
(d) Zn     

Question. The tendency for catenation in group 14 elements varies in the order 
(a) C » Si > Ge = Sn > Pb
(b) C « Si < Ge = Sn< Pb
(c) C » Si < Ge < Sn < Pb
(d) C » Si = Ge = Sn > Pb     

Question. The purest form of coal is
(a) peat
(b) anthracite
(c) bituminous
(d) lignite       

Question. Calorific value of producer gas is low because of
(a) high per cent of N₂
(b) low per cent of CO₂
(c) high per cent of CO
(d) low per cent of N₂     

Question. Crystalline form of silica is called
(a) crystalline silicon
(b) quartz
(c) rock
(d) talc     

Question. Formula for agate is
(a) Na₂SiO₃
(b) K₂O· SiO₂ · Al₂O₃
(c) SiO₂
(d) CaF₂     

Question. In silicon dioxide 
(a) there are double bonds between silicon and oxygen atoms
(b) silicon atom is bonded to two oxygen atoms
(c) each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bounded to two silicon atoms
(d) each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bounded to two silicon atoms     

Question. The thermal stability of CF₄ is
(a) less than SiF₄
(b) more than SiF₄
(c) less than CCl₄
(d) less than SiCl₄       

Question. Water glass is
(a) glass made of water
(b) sodium silicate
(c) calcium formate
(d) pyrex glass       

Question. Which is likely to show inert-pair effect?
(a) K
(b) Mg
(c) Al
(d) Pb     

Question. Addition of SnCI₂ to HgCl₂ gives precipitate
(a) white turning to red
(b) white turning to grey
(c) black turning to white
(d) None of these     

Question. Carborundum is obtained when silica is heated at high temperature with 
(a) carbon
(b) carbon monoxide
(c) carbon dioxide
(d) calcium carbonate       

Question. The chemical formula of sindhur is
(a) PbO
(b) Pb₃O₄
(c) ZnO
(d) SnCl₂     

Question. Moderate electrical conductivity is shown by 
(a) silica
(b) graphite
(c) diamond
(d) carborundum       

Question. Quartz is an example of
(a) chain silicate
(b) sheet silicate
(c) cyclic s ilicate 
(d) three dimensional network silicate   

Question. When tin is treated with concentrated nitric acid
(a) it is converted into stannous nitrate
(b) it is converted into stannic nitrate
(c) it is converted into metastannic acid
(d) it becomes passive     

Question. Which of the following is used in making printer’s ink, shoe polish, black varnish and paint ? 
(a) Lamp black
(b) Bone black
(c) Carbon black
(d) None of these       

Question. The incon-ect statement/s among the following is/are
I. NCl₅ does not exist while PCl₅ does.
II. Lead prefers to form tetravalent compounds.
III. The three C—O bonds are not equal in the carbonate ion.
IV. Both O⁺₂ and NO are paramagnetic. 
(a) I, III and IV
(b) I and IV
(c) II and III
(d) I and III
(e) IV Only   

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