VBQs The p – Block Elements Class 12 Chemistry

VBQs The p – Block Elements Class 12 Chemistry with The p – Block Elements has been provided below for standard students. We have provided chapter wise VBQ for Class 12 Chemistry with The p – Block Elements. The following The p – Block Elements Class 12 Chemistry value based questions with answers will come in your exams. Students should understand the concepts and learn the solved cased based VBQs provided below. This will help you to get better marks in class 12 examinations.

The p – Block Elements VBQs Class 12 Chemistry

Question. S – S bond is not present in
(a)  S₂O₄^2-
(b) S₂O₅^2-d
(c) S₂O₃^2-
(d) S₂O₇^2-

Question. Which one of the following order is correct for the bond energies of halogen molecules ?
(a) I₂ > Cl₂ > Br₂
(b) Br₂ > Cl₂ > I₂
(c) I₂ > Br₂ > Cl₂
(d) Cl₂ > Br₂ > I₂

Question. Oleum is
(a) castor Oil
(b) oil of vitriol
(c) fuming H₂SO₄
(d) None of them

Question. XeF₄ on partial hydrolysis produces
(a) XeF₄
(b) XeOF₂
(c) XeOF₄
(d) XeO₃

Question. Hot conc. H₂SO₄ acts as moderately strong oxidising agent.It oxidises both metals and nonmetals. Which of the following element is oxidised by conc. H₂SO₄ into two gaseous products?
(a) Cu
(b) S
(c) C
(d) Zn

Question. Sulphuric acid reacts with PCl5 to give
(a) thionyl chloride
(b) sulphur monochloride
(c) sulphuryl chloride
(d) sulphur tetrachloride

Question. Which one of the following elements shows more than one oxidation states ?
(a) Sodium
(b) Fluorine
(c) Chlorine
(d) Potassium

Question. Which one of the following reacts with conc. H₂SO₄?
(a) Au
(b) Ag
(c) Pt
(d) Pb

Question. Fluorine exhibits an oxidation state of only –1 because
(a) it can readily accept an electron
(b) it is very strongly electronegative
(c) it is a non-metal
(d) it belongs to halogen family

Question. Which characteristic is not correct about H₂SO₄ ?
(a) Reducing agent
(b) Oxidising agent
(c) Sulphonating agent
(d) Highly viscous

Question. The electronegativity follows the order
(a) F > O > Cl > Br
(b) F > Cl > Br > O
(c) O > F > Cl > Br
(d) Cl > F > O > Br

Question. Which of the following has maximum number of lone pairs associated with Xe ?
(a) XeF₄
(b) XeF₆
(c) XeF₂
(d) XeO₃

Question. The correct order of solubility in water for He, Ne, Ar, Kr,Xe is
(a) He > Ne > Ar > Kr > Xe
(b) Ne > Ar > Kr > He > Xe
(c) Xe > Kr > Ar > Ne > He
(d) Ar > Ne > He > Kr > Xe

Question. The shape of XeO₂F₂ molecule is
(a) trigonal bipyramidal
(b) square planar
(c) tetrahedral
(d) see-saw

Question. The bond energies of F₂ , Cl₂, Br₂ and I₂ are 155, 244, 193 and 151 kJ mol^–1 respectively. The weakest bond will be in
(a) Br₂
(b) Cl₂
(c) F₂
(d) I₂

Question. The halogen that is most easily reduced is
(a) F₂
(b) Cl₂
(c) Br₂
(d) I₂

Question. Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to :
(a) High ionization enthalpy of fluorine
(b) Smaller size of chlorine atom
(c) Smaller size of fluorine atom
(d) Bigger size of 2p orbital of fluorine

Question. The element which has not yet been reacted with F₂ is
(a) Ar
(b) Xe
(c) Kr
(d) Rn

Question. XeF₆ on complete hydrolysis gives
(a) Xe
(b) XeO₂
(c) XeO₃
(d) XeO₄

Question. The correct order of reactivity of halogens with alkalies is
(a) F > Cl > Br > I
(b) F < Cl > Br < I
(c) F < Cl < Br < I
(d) F < Cl < Br > I

Question. Which of the following is the correct sequence of the noble gases in their group in the periodic table?
(a) Ar, He, Kr, Ne, Rn, Xe
(b) He, Ar, Ne, Kr, Xe, Rn
(c) He, Ne, Kr, Ar, Xe, Rn
(d) He, Ne, Ar, Kr, Xe, Rn

Question. The correct order of increasing oxidising power is
(a) F₂ > Br₂ > Cl₂ > I₂
(b) F₂ < Cl₂ < Br₂ < I₂
(c) Cl₂> Br₂ > F₂ > I₂
(d) I₂ < Br₂ < Cl₂ < F₂

Question. The acid which has a peroxy linkage is
(a) Sulphurous acid
(b) Pyrosulphuric acid
(c) Dithionic acid
(d) Caro’s acid

Question. Which of the following noble gases do not have an octet of electrons in its outermost shell?
(a) Neon
(b) Radon
(c) Argon
(d) Helium

Question. Which of the following halogen does not exhibit positive oxidation state in its compounds?
(a) Cl
(b) Br
(c) I
(d) F

Question. Which one is most stable to heat –
(a) HClO
(b) HClO₂
(c) HClO₃
(d) HClO₄

Question. Which one of the following elements is most reactive ?
(a) He
(b) Ne
(c) Ar
(d) Xe

Question. Among the following which is the strongest oxidising agent?
(a) Br₂
(b) I₂
(c) Cl₂
(d) F₂

Question. In the following four elements, the ionisation potential of which one is the highest ?
(a) Oxygen
(b) Argon
(c) Barium
(d) Cesium

Question. Which is the weakest out of HF, HCl, HBr and HI?
(a) HF
(b) HCl
(c) HBr
(d) HI

Question. Which of the following noble gas is least polarisable?
(a) He
(b) Xe
(c) Ar
(d) Ne

Question. In which of the following groups, when He is placed, its all the properties are satisfied
(a) with alkali metals
(b) with halogens
(c) with inert gases
(d) None of these

Question. At room temperature, HCl is a gas while HF is a low boiling liquid. This is because
(a) H- F bond is covalent
(b) H- F bond is ionic
(c) HF has metallic bond
(d) HF has hydrogen bond

Question. The bleaching action of chlorine is due to
(a) reduction
(b) hydrogenation
(c) chlorination
(d) oxidation

Question. Cl₂ reacts with hot and conc. NaOH to give –
(a) NaClO
(b) NaClO₃
(c) NaClO₂
(d) NaClO₄

Question. When chlorine reacts with cold and dilute solution of sodium hydroxide, the products obtained are
(a) Cl^– + ClO^–
(b) Cl^– +  ClO₂^–
(c) Cl^– + ClO₃–
(d) Cl^– +  ClO₄^–

Question. Chlorine is liberated when we heat
(a) KMnO₄ + NaCl
(b) K₂Cr2O₇ + MnO₂
(c) Pb(NO₃)₂ + MnO₂
(d) K₂Cr₂O₇ + HCl

Question. Which of the following is used in the preparation of chlorine?
(a) Only MnO₂
(b) Only KMnO₄
(c) Both MnO₂ and KMnO₄
(d) Either MnO₂ or KMnO₄

Question. What is the number of sigma ( σ ) and pi ( π ) bonds present in sulphuric acid molecule ?
(a) 6σ , 2 π
(b) 6σ , 0 π
(c) 2σ , 4 π
(d) 2σ , 2 π

Question. The reaction of KMnO₄ and HCl results in
(a) oxidation of Mn in KMnO₄ and production of Cl₂
(b) reduction of Mn in KMnO₄ and production of H₂
(c) oxidation of Mn in KMnO₄ and production of H₂
(d) reduction of Mn in KMnO₄ and production of Cl₂

Question. Bleaching powder on standing forms mixture of :
(a) CaO + Cl₂
(b) CaO + CaCl₂
(c) HOCl + Cl₂
(d) CaCl₂ + Ca(ClO₃)₂

Question. The outer electronic structure of 3s² 3p⁵ is possessed by
(a) O
(b) Cl
(c) Br
(d) Ar

Question. Hydrochloric acid at 25ºC is
(a) ionic and liquid
(b) covalent and liquid
(c) ionic and gas
(d) None of these

Question. Which of the following is the best description for the behaviour of bromine in the reaction given below ?
H₂O+ Br₂ → HOBr + HBr
(a) Proton acceptor only
(b) Both oxidized and reduced
(c) Oxidized only
(d) Reduced only

Question. Caro’s acid is
(a) H₂SO₃
(b) H₃S₂O₅
(c) H₂SO₅
(d) H₂S₂O₈

Question.The lowest boiling point of helium is due to its
(a) inertness
(b) gaseous nature
(c) high polarisability
(d) weak van der Waal’s forces between atoms

Question. The hybridization of Xe in XeF₂ is
(a) sp³
(b) sp²
(c) sp³ d
(d) sp²d

Question. The hybridization in ICl₇ is
(a) sp³d³
(b) d²sp³
(c) sp³d
(d) sp³

Question. The number of dative bonds in sulphuric acid molecule is
(a) 0
(b) 1
(c) 2
(d) 4

Question. Which of the following is observed when Cl₂ reacts with hot and concentrated NaOH?
(a) NaCl , NaOCl
(b) NaCl , NaClO₂
(c) NaCl , NaClO₃
(d) NaOCl , NaClO₃