{"id":19122,"date":"2021-02-22T11:47:59","date_gmt":"2021-02-22T06:17:59","guid":{"rendered":"https:\/\/mcqbooks.com\/?p=19122"},"modified":"2021-09-28T10:52:59","modified_gmt":"2021-09-28T05:22:59","slug":"mcq-questions-for-class-12-chemistry-chapter-7","status":"publish","type":"post","link":"https:\/\/mcqbooks.com\/mcq-questions-for-class-12-chemistry-chapter-7\/","title":{"rendered":"MCQ Questions for Class 12 Chemistry Chapter 7 The p-Block Elements with Answers"},"content":{"rendered":"

Students may want to download NCERT MCQ Questions for Class 12 Chemistry Chapter 7 The p-Block Elements with Answers Pdf free download. This The p-Block Elements Class 12 MCQs Questions with Answers can help understand the concepts score better in your Class 12 Chemistry Exam, so make sure you practice these! Check out chapter-wise MCQ Questions for Class 12 Chemistry with Answers<\/a>.<\/p>\n

The p-Block Elements Class 12 MCQs Questions with Answers<\/h2>\n

Solve this The p-Block Elements Multiple Choice Questions of Class 12 Chemistry Chapter 7 MCQ, so as not to miss out on any concept from being clear about what they mean!<\/p>\n

Question 1.
\nWhich of the following compounds contains S=O and S=S bonds?
\n(a) Sulphuric acid
\n(b) Thiosulphuric acid
\n(c) Sulphurous acid
\n(d) Thiosulphurous acid.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) Thiosulphuric acid<\/p>\n<\/details>\n

\n

Question 2.
\nWhich of the following halogen shows only negative oxidation state?
\n(a) Chlorine
\n(b) Bromine
\n(c) Fluorine
\n(d) Iodine<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Fluorine<\/p>\n<\/details>\n

\n

Question 3.
\nWhich of the following is the strongest acid?
\n(a) H2<\/sub>O
\n(b) H2<\/sub>S
\n(c) H2<\/sub>Se
\n(d) H2<\/sub>Te<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) H2<\/sub>Te<\/p>\n<\/details>\n

\n

Question 4.
\nThe oxoacid of halogen having maximum acidic character is
\n(a) HCl4<\/sub>
\n(b) HClO3<\/sub>
\n(c) HClO2<\/sub>
\n(d) HClO<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) HCl4<\/sub><\/p>\n<\/details>\n

\n

Question 5.
\nWhich of the following oxide of nitrogen is called laughing gas?
\n(a) NO2<\/sub>
\n(b) N2<\/sub>O
\n(c) N2<\/sub>O3<\/sub>
\n(d) N2<\/sub>O5<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) N2<\/sub>O<\/p>\n<\/details>\n

\n

Question 6.
\nAmong the following, which is the strongest oxidising agent?
\n(a) Br2<\/sub>
\n(b) l2<\/sub>
\n(c) Cl2<\/sub>
\n(d) F2<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) F2<\/sub><\/p>\n<\/details>\n

\n

Question 7.
\nThe basicity of H2<\/sub>PO2<\/sub> is
\n(a) 1
\n(b) 2
\n(c) 3
\n(d) 4<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) 1<\/p>\n<\/details>\n

\n

Question 8.
\nThe basicity of phosphorous acid H3<\/sub>PO3<\/sub> is
\n(a) Two
\n(b) Three
\n(c) One
\n(d) Zero<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Two<\/p>\n<\/details>\n

\n

Question 9.
\nWhich of the following is a neutral oxide of nitrogen?
\n(a) N2<\/sub>O
\n(b) N2<\/sub>O5<\/sub>
\n(c) NO2<\/sub>
\n(d) N2<\/sub>O4<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) N2<\/sub>O<\/p>\n<\/details>\n

\n

Question 10.
\nAmong the trihalides of nitrogen, which one is least basic?
\n(a) Nl3<\/sub>
\n(b) NBr3<\/sub>
\n(c) NCl3<\/sub>
\n(d) NF3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) NF3<\/sub><\/p>\n<\/details>\n

\n

Question 11.
\nThe correct order of thermal stability of hydrogen halides (HX) is
\n(a) HI > HBr > HCl > HF
\n(b) HF > HCl > HBr > HI
\n(c) HCl < HF < HBr < HI
\n(d) HI > HCl > HF > HBr<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) HF > HCl > HBr > HI<\/p>\n<\/details>\n

\n

Question 12.
\nMaximum covalency of nitrogen is:
\n(a) 3
\n(b) 5
\n(c) 4
\n(d) 6<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) 4<\/p>\n<\/details>\n

\n

Question 13.
\nIn the following compounds which has minimum boiling point?
\n(a) H2<\/sub>Se
\n(b) H2<\/sub>Te
\n(c) H2<\/sub>O
\n(d) H2<\/sub>S<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) H2<\/sub>S<\/p>\n<\/details>\n

\n

Question 14.
\nThe shape of XeF4<\/sub> is
\n(a) square planar
\n(b) tetrahedral
\n(c) square pyramidal
\n(d) trigonal bipyramidal<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) square planar<\/p>\n<\/details>\n

\n

Question 15.
\nIn the following which is dibasic acid?
\n(a) H3<\/sub>PO4<\/sub>
\n(b) H3<\/sub>PO3<\/sub>
\n(c) H3<\/sub>PO2<\/sub>
\n(d) HClO4<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) H3<\/sub>PO3<\/sub><\/p>\n<\/details>\n

\n

Question 16.
\nIn the following strongest reducing agent is:
\n(a) PH3<\/sub>
\n(b) BiH3<\/sub>
\n(c) SbH3<\/sub>
\n(d) ASH3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) BiH3<\/sub><\/p>\n<\/details>\n

\n

Question 17.
\nOn addition of cone. H2<\/sub>SO4<\/sub> to a chloride salt, colourless fumes are evolved but in case of iodide salt, violet fumes come out. This is because
\n(a) H2<\/sub>SO4<\/sub> reduces Hl to l2<\/sub>
\n(b) Hl is of violet colour
\n(c) Hl gets oxidised to l2<\/sub>
\n(d) Hl changes to HlO3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Hl gets oxidised to l2<\/sub><\/p>\n<\/details>\n

\n

Question 18.
\nIn qualitative analysis, when H2<\/sub>S is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. HNO3<\/sub>, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives
\n(a) deep blue precipitate of Cu (OH)2<\/sub>
\n(b) deep blue solution of [Cu(NH3<\/sub>)4<\/sub>]2+<\/sup>
\n(c) deep blue solution of Cu(NO3<\/sub>)2<\/sub>
\n(d) deep blue solution of Cu(OH)2<\/sub>. CU(NO3<\/sub>)2<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) deep blue solution of [Cu(NH3<\/sub>)4<\/sub>]2+<\/sup><\/p>\n<\/details>\n

\n

Question 19.
\nIn a cyclotrimetaphosphoric acid molecule, how many single and double bonds are present?
\n(a) 3 double bonds; 9 single bonds
\n(b) 6 double bonds; 6 single bonds
\n(c) 3 double bonds; 12 single bonds
\n(d) Zero double bonds; 12 single bonds<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) 3 double bonds; 12 single bonds<\/p>\n<\/details>\n

\n

Question 20.
\nWhich of the following elements can be involved in p\u03c0-d\u03c0 bonding?
\n(0) Carbon
\n(b) Nitrogen
\n(c) Phosphorus
\n(d) Boron<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Phosphorus<\/p>\n<\/details>\n

\n

Question 21.
\nWhich of the following pairs of ions are isoelectronic and isostructural?
\n(a) CO\\(_{ 3 }^{2-}\\), NO\\(_{ 3 }^{-}\\)
\n(b) ClO\\(_{ 3 }^{-}\\), CO\\(_{ 3 }^{2-}\\)
\n(c) SO\\(_{ 3 }^{2-}\\), NO\\(_{ 3 }^{-}\\)
\n(d) ClO\\(_{ 3 }^{-}\\), SO\\(_{ 3 }^{2-}\\)<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) CO\\(_{ 3 }^{2-}\\), NO\\(_{ 3 }^{-}\\)<\/p>\n<\/details>\n

\n

Question 22.
\nAffinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?
\n(a) HF
\n(b) HCl
\n(c) HBr
\n(d) HI<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) HF<\/p>\n<\/details>\n

\n

Question 23.
\nBond dissociation enthalpy of E-H (E = element) bonds is given below. Which of the compounds will act as strongest reducing agent?
\n\"MCQ
\n(a) NH3<\/sub>
\n(b) PH3<\/sub>
\n(c) ASH3<\/sub>
\n(d) SbH3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) SbH3<\/sub><\/p>\n<\/details>\n

\n

Question 24.
\nOn heating with concentrated NaOH solution in an inert atmosphere of CO2<\/sub>, white phosphorus gives a gas. Which of the following statement is incorrect about the gas?
\n(a) It is highly poisonous and has smell like rotten fish.
\n(b) Its solution in water decomposes in the presence of light.
\n(c) It is more basic than NH3<\/sub>.
\n(d) It is less basic than NH3<\/sub>.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) It is more basic than NH3<\/sub>.<\/p>\n<\/details>\n

\n

Question 25.
\nWhich of the following acids forms three series of salts?
\n(a) H3<\/sub>PO2<\/sub>
\n(b) H3<\/sub>BO3<\/sub>
\n(c) H3<\/sub>PO4<\/sub>
\n(d) H3<\/sub>PO3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) H3<\/sub>PO4<\/sub><\/p>\n<\/details>\n

\n

Question 26.
\nStrong reducing behaviour of H3<\/sub>PO2<\/sub> is due to
\n(a) Low oxidation state of phosphorus
\n(b) Presence of two -OH groups and one P-H bond
\n(c) Presence of one -OH group and two P-H bonds
\n(d) High electron gain enthalpy of phosphorus<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Presence of one -OH group and two P-H bonds<\/p>\n<\/details>\n

\n

Question 27.
\nOn heating lead nitrate forms oxides of nitrogen and lead. The oxides formed are
\n(a) N3<\/sub>O, PbO
\n(b) NO3<\/sub>, PbO
\n(c) NO, PbO
\n(d) NO, PbO2<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) NO3<\/sub>, PbO<\/p>\n<\/details>\n

\n

Question 28.
\nWhich of the following elements does not show allotropy?
\n(a) Nitrogen
\n(b) Bismuth
\n(c) Antimony
\n(d) Arsenic<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Nitrogen<\/p>\n<\/details>\n

\n

Question 29.
\nWhich of the following statements is wrong?
\n(a) Single N-N bond is stronger than the single P-P bond.
\n(b) PH3<\/sub> can act as a ligand in the formation of coordination compound with transition elements.
\n(c) NO2<\/sub> is paramagnetic in nature.
\n(d) Covalency of nitrogen in N2<\/sub>O5<\/sub> is four.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Single N-N bond is stronger than the single P-P bond.<\/p>\n<\/details>\n

\n

Question 30.
\nA brown ring is formed in the ring test for NO3<\/sub>–<\/sup> ion. It is due to the formation of
\n(a) [Fe(H2<\/sub>O)5<\/sub> (NO)]2+<\/sup>
\n(b) FeSO4<\/sub>. NO2<\/sub>
\n(c) [Fe(H2<\/sub>O)4<\/sub>(NO)2<\/sub>]2+<\/sup>
\n(d) FeSO4<\/sub>.HNO3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) [Fe(H2<\/sub>O)5<\/sub> (NO)]2+<\/sup><\/p>\n<\/details>\n

\n

Question 31.
\nElements of group-15 form compounds in +5 oxidation state. However, bismuth forms only one well-characterised compound in +5 oxidation state. The compound is
\n(a) Bi3<\/sub>O5<\/sub>
\n(b) BiF5<\/sub>
\n(c) BiCl5<\/sub>
\n(d) Bi2<\/sub>S5<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) BiF5<\/sub><\/p>\n<\/details>\n

\n

Question 32.
\nOn heating ammonium dichromate and barium azide separately we get
\n(a) N2<\/sub> in both cases
\n(b) N2<\/sub> with ammonium dichromate and NO with barium azide
\n(c) N2<\/sub>O with ammonium dichromate and N2<\/sub> with barium azide
\n(d) N2<\/sub>O with ammonium dichromate and NO2<\/sub> with barium azide<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) N2<\/sub> in both cases<\/p>\n<\/details>\n

\n

Question 33.
\nIn the preparation of HNO3<\/sub>, we get NO gas by catalytic oxidation of ammonia. The moles of NO produced by the oxidation of two moles of NH3<\/sub> will be
\n(a) 2
\n(b) 3
\n(c) 4
\n(d) 6<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) 2<\/p>\n<\/details>\n

\n

Question 34.
\nThe oxidation state of central atom in the anion of compound NaH2<\/sub>PO2<\/sub> will be
\n(a) +3
\n(b) +5
\n(c) +1
\n(d) -3<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) +1<\/p>\n<\/details>\n

\n

Question 35.
\nWhich of the following is not tetrahedral in shape?
\n(a) NH\\(_{ + }^{4}\\)
\n(b) SiCl4<\/sub>
\n(c) SF4<\/sub>
\n(d) SO\\(_{ + }^{2-}\\)<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) SF4<\/sub><\/p>\n<\/details>\n

\n

Question 36.
\nWhich of the following are peroxoacids of sulphur?
\n(a) H2<\/sub>SO5<\/sub> and H2<\/sub>S2<\/sub>O8<\/sub>
\n(b) H2<\/sub>SO5<\/sub> and H2<\/sub>S2<\/sub>O7<\/sub>
\n(c) H2<\/sub>S2<\/sub>O7<\/sub> and H2<\/sub>S2<\/sub>O8<\/sub>
\n(d) H2<\/sub>S2<\/sub>O6<\/sub> and H2<\/sub>S2<\/sub>O7<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) H2<\/sub>SO5<\/sub> and H2<\/sub>S2<\/sub>O8<\/sub><\/p>\n<\/details>\n

\n

Question 37.
\nHot cone. H2<\/sub>SO4<\/sub> acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following element is oxidised by cone. H2<\/sub>SO4<\/sub> into two gaseous products?
\n(a) Cu
\n(b) S
\n(c) C
\n(d) Zn<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) C<\/p>\n<\/details>\n

\n

Question 38.
\nA black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with NH3<\/sub> an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from
\n(a) – 3 to + 3
\n(b) – 3 to 0
\n(c) – 3 to + 5
\n(d) 0 to – 3<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) – 3 to + 3<\/p>\n<\/details>\n

\n

Question 39.
\nIn the preparation of compounds of Xe, Bartlett had taken O\\(_{ 2 }^{+}\\) PtF\\(_{ 6 }^{-}\\) as a base compound. This is because
\n(a) both O2<\/sub> and Xe have same size.
\n(b) both O2<\/sub> and Xe have same electron gain enthalpy.
\n(c) both O2<\/sub> and Xe have almost same ionisation enthalpy.
\n(d) both Xe and O2<\/sub> are gases.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) both O2<\/sub> and Xe have almost same ionisation enthalpy.<\/p>\n<\/details>\n

\n

Question 40.
\nIn solid state PCl5<\/sub> is a
\n(a) covalent solid
\n(b) octahedral structure
\n(c) ionic solid with [PCl6<\/sub>]+<\/sup> octahedral and [PCl4<\/sub>]–<\/sup> tetrahedra
\n(d) ionic solid with [PCl4<\/sub>]+<\/sup> tetrahedral and [PCl6<\/sub>]–<\/sup> octahedra<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) ionic solid with [PCl4<\/sub>]+<\/sup> tetrahedral and [PCl6<\/sub>]–<\/sup> octahedra<\/p>\n<\/details>\n

\n

Question 41.
\nReduction potentials of some ions are given below. Arrange them in decreasing order of oxidising power.
\n\"MCQ
\n(a) ClO4<\/sub>–<\/sup> > IO4<\/sub>–<\/sup> > BrO4<\/sub>–<\/sup>
\n(b) IO4<\/sub>–<\/sup> > BrO4<\/sub>–<\/sup> > ClO4<\/sub>–<\/sup>
\n(c) BrO4<\/sub>–<\/sup> > IO4<\/sub>–<\/sup> > ClO4<\/sub>–<\/sup>
\n(d) BrO4<\/sub>–<\/sup> > ClO4<\/sub>–<\/sup> > IO4<\/sub>–<\/sup><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) BrO4<\/sub>–<\/sup> > IO4<\/sub>–<\/sup> > ClO4<\/sub>–<\/sup><\/p>\n<\/details>\n

\n

Question 42.
\nWhich of the following is isoelectronic pair?
\n(a) ICl2<\/sub>, ClO2<\/sub>
\n(b) BrO2<\/sub>–<\/sup>, BrF2<\/sub>+<\/sup>
\n(c) ClO2<\/sub>, BrF
\n(d) CN–<\/sup>, O3<\/sub><\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) BrO2<\/sub>–<\/sup>, BrF2<\/sub>+<\/sup><\/p>\n<\/details>\n

\n

Assertion and Reason Type Questions<\/span><\/p>\n

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
\n(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
\n(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
\n(c) Assertion (A) is correct, Reason (R) is wrong statement.
\n(d) Assertion (A) is wrong, but Reason (R) is correct statement.<\/p>\n

Question 43.
\nAssertion: Ozone is a powerful oxidising agent in comparison to O2<\/sub>.
\nReason: Ozone is diamagnetic but O2<\/sub> is paramagnetic.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 44.
\nAssertion: F2<\/sub> has low reactivity.
\nReason: F-F bond has low bond dissociation enthalpy.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.<\/p>\n<\/details>\n

\n

Question 45.
\nAssertion: F-F bond in F2<\/sub> molecule is strong.
\nReason: F atom is small in size.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.<\/p>\n<\/details>\n

\n

Question 46.
\nAssertion: P4<\/sub> is more reactive than N2<\/sub>.
\nReason: P-P single bond in P4<\/sub> is much weaker than N \u2261 N in N2<\/sub> molecule.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 47.
\nAssertion: Xenon forms fluorides.
\nReason: Because 5d-orbitals are available for valence shell expansion.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 48.
\nAssertion: HClO4<\/sub> is stronger acid than HClO3<\/sub>.
\nReason: Oxidation state of Cl in HClO4<\/sub> is +7 and in HClO3<\/sub> is +5.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 49.
\nAssertion: Iodine dissolves in aqueous solution of potassium iodide.
\nReason: Potassium iodide behaves as an organic solvent and therefore, dissolves non-polar iodine.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.<\/p>\n<\/details>\n

\n

Question 50.
\nAssertion: HClO4<\/sub> is stronger acid than HBrO4<\/sub>.
\nReason: HClO4<\/sub> ionises less in water than HBrO4<\/sub>.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.<\/p>\n<\/details>\n

\n

Question 51.
\nAssertion: H3<\/sub>PO3<\/sub> is a dibasic acid.
\nReason: There are two H atoms directly bonded to P.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.<\/p>\n<\/details>\n

\n

Question 52.
\nAssertion: Reaction of SO2<\/sub> and H2<\/sub>S in the presence of Fe2<\/sub>O3<\/sub> catalyst gives elemental sulphur.
\nReason: SO2<\/sub> is reducing agent.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).<\/p>\n<\/details>\n

\n

Question 53.
\nAssertion: The acidic strength of halogen acids varies in the order HF > HCl > HBr > HI.
\nReason: The bond dissociation enthalpy of halogen acids decreases in the order HF > HCl > HBr > HI.<\/p>\n

\nAnswer<\/span><\/summary>\n

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.<\/p>\n<\/details>\n

\n

This NCERT MCQ Questions for Class 12 Chemistry Chapter 7 The p-Block Elements with Answers Pdf free download has been put together to help students understand the CBSE Class 12 Chemistry The p-Block Elements MCQs Multiple Choice Questions with Answers. Hope you found this helpful!<\/p>\n","protected":false},"excerpt":{"rendered":"

Students may want to download NCERT MCQ Questions for Class 12 Chemistry Chapter 7 The p-Block Elements with Answers Pdf free download. This The p-Block Elements Class 12 MCQs Questions with Answers can help understand the concepts score better in your Class 12 Chemistry Exam, so make sure you practice these! Check out chapter-wise MCQ … Read more<\/a><\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[35],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts\/19122"}],"collection":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/comments?post=19122"}],"version-history":[{"count":0,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/posts\/19122\/revisions"}],"wp:attachment":[{"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/media?parent=19122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/categories?post=19122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqbooks.com\/wp-json\/wp\/v2\/tags?post=19122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}