Refer to JEE Chemistry The P Block Elements MCQs Set C provided below. JEE (Main) Full Syllabus Chemistry MCQs with answers available in Pdf for free download. The MCQ Questions for Full Syllabus Chemistry with answers have been prepared as per the latest syllabus, JEE (Main) books and examination pattern suggested in Full Syllabus by JEE (Main), NCERT and KVS. Multiple Choice Questions for The P Block Elements are an important part of exams for Full Syllabus Chemistry and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Chemistry and also download more latest study material for all subjects
MCQ for Full Syllabus Chemistry The P Block Elements
Full Syllabus Chemistry students should refer to the following multiple-choice questions with answers for The P Block Elements in Full Syllabus. These MCQ questions with answers for Full Syllabus Chemistry will come in exams and help you to score good marks
The P Block Elements MCQ Questions Full Syllabus Chemistry with Answers
Question: Ionic radii (in Å) of As3+, Sb3+ and Bi3+ follow the order
- a) Bi3+ > Sb3+ > As3+
- b) Sb3+ > Bi3+ >As3+
- c) As3+ > Sb3+ > Bi3+
- d) None of these
Answer: Bi3+ > Sb3+ > As3+
Question: Which of the following statements is not correct for nitrogen?
- a) d-orbitals are available for bonding
- b) Its electronegativity is very high
- c) It is a typical non-metal
- d) Its molecular size is small
Answer: d-orbitals are available for bonding
Question: Collectively the elements of group 15 are called
- a) pnicogens
- b) nicopen
- c) pnicopens
- d) None of these
Answer: pnicogens
Question: Which one of the following elements is most metallic
- a) Bi
- b) As
- c) P
- d) Sb
Answer: Bi
Question: Which of the following statement is incorrect for group 15 elements ?
- a) The boiling point and melting point increases from top to bottom in the group
- b) Dinitrogen is a gas while all others are solids
- c) All statements are correct
- d)
Answer: The boiling point and melting point increases from top to bottom in the group
Question: Which of the follow group 15 element forms metallic bonds in elemental state ?
- a) Bi
- b) P
- c) As
- d) Sb
Answer: Bi
Question: The three important oxidation states of phosphorus are
- a) –3, +3 and +5
- b) –3, +3 and +2
- c) –3, +3 and –5
- d) –3, +3 and +4
Answer: –3, +3 and +5
Question: Nitrogen is relatively inactive element because
- a) dissociation energy of its molecule is fairly high
- b) its electronegativity is fairly high
- c) it has low atomic radius
- d) its atom has a stable electronic configuration
Answer: dissociation energy of its molecule is fairly high
Question:
- a) N
- b) As
- c) P
- d) Sb
Answer: N
Question: Pick out the wrong statement.
- a) Catenation tendency is higher in nitrogen when compared with other elements of the same group
- b) Nitrogen has higher first ionisation enthalpy whencompared with other elements of the same group.
- c) Bismuth forms metallic bonds in elemental state
- d) None of these
Answer: Catenation tendency is higher in nitrogen when compared with other elements of the same group
Question: Nitrogen forms N2, but phosphorus is converted into P4 from P, the reason is
- a)
- b)
- c) Multiple bond is formed easily
- d) Triple bond is present between phosphorus atom
Answer:
Question: What causes nitrogen to be chemically inert ?
- a) High bond energy
- b) None of these
- c) Absence of bond polarity
- d) Multiple bond formation in the molecule
Answer: High bond energy
Question: Among the 15th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to
- a) Inert pair effect
- b) Large ionization energy
- c) Non metallic character
- d) High electronegativity
Answer: Inert pair effect
Question: Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group. This is due to
- a) due to presence of vacant d-orbitals
- b) reactivity of phosphorus
- c) inert nature of nitrogen
- d) dissimilar electronic configuration
Answer: due to presence of vacant d-orbitals
Question: Which one has the lowest boiling point ?
- a) PH3
- b) SbH3
- c) NH3
- d) AsH3
Answer: PH3
Question: Most acidic oxide among the following is
- a) N2O5
- b) N2O4
- c) P2O5
- d) As2O3
Answer: N2O5
Question: Which of the following species has the highest dipole moment
- a) NH3
- b) PH3
- c) SbH3
- d) None of these
Answer: NH3
Question: The correct decreasing order of basic strength is
- a)
- b)
- c)
- d) None of these
Answer:
Question: Which of the following fluorides does not exist?
- a) NF5
- b) AsF5
- c) SbF5
- d) PF5
Answer: NF5
Question: The p-block element of group 15 that forms predominantly basic oxide is
- a) Bi
- b) P
- c) N
- d) As
Answer: Bi
Question: With respect to protonic acids, which of the following statements is correct
- a) PH3 is less basic than NH3
- b) PH3 is more basic than NH3
- c) PH3 is equally basic as NH3
- d) PH3 is amphoteric while NH3 is basic
Answer: PH3 is less basic than NH3
Question: PCl5 is possible but NCl5 does not exist
- a) in N, d-sub-shell is absent
- b) ionization energy of N is very high
- c) it does not like Cl
- d) None of these
Answer: in N, d-sub-shell is absent
Question: Maximum covalency of nitrogen is
- a) 4
- b) 3
- c) 5
- d) 6
Answer: 4
Question: Elements of group-15 form compounds in +5 oxidation state. However, bismuth forms only one well characterised compound in +5 oxidation state. The compound is
- a) BiF5
- b) Bi2S5
- c) BiCl5
- d) None of these
Answer: BiF5
Question: Pure nitrogen is prepared in the laboratory by heating a mixture of
- a) NH4Cl + NaNO2
- b) NH4NO3 + NaCl
- c) NH4OH + NaCl
- d) NH4Cl + NaOH
Answer: NH4Cl + NaNO2
Question: On heating ammonium dichromate and barium azide separately we get
- a) N2 in both cases
- b) N2 with ammonium dichromate and NO with barium azide
- c) N2O with ammonium dichromate and N2 with barium azide
- d) None of these
Answer: N2 in both cases
Question: In Haber’s process for the manufacture of NH3
- a) finely divided nickel is used as a catalyst
- b) finely divided iron is used as a catalyst
- c) finely divided molybdenum is used as a catalyst
- d) no catalyst is necessary
Answer: finely divided nickel is used as a catalyst
Question: Ammonia on reaction with hypochlorite anion can form
- a) Both
- b) N2H4
- c) NH4Cl
- d) None of these
Answer: Both
Question: NH3 gas is dried over
- a) CaO
- b) HNO3
- c) CuSO4
- d) P2O5
Answer: CaO
Question: The shape of ammonia molecule is
- a) pyramidal
- b) octahedral
- c) tetrahedral
- d) planar triangle
Answer: pyramidal
More Questions................................................
Question: One mole of calcium phosphide on reaction with excess water gives
- a) two moles of phosphine
- b) one mole of phosphorus pentoxide
- c) two moles of phosphoric acid
- d) one mole of phosphine
Answer: two moles of phosphine
Question: PH3, the hydride of phosphorus is
- a) covalent
- b) ionic
- c) metallic
- d) non-metallic
Answer: covalent
Question: Phosphine is not obtained by which of the following reaction
- a) Red P is heated with NaOH
- b) White P is heated with NaOH
- c) Phosphorus trioxide is boiled with water
- d) Ca3P2 reacts with water
Answer: Red P is heated with NaOH
Question: Phosphine is not evolved when
- a) metaphosphoric acid is heated
- b) calcium hypophosphite is heated
- c) phosphorus acid is heated
- d) white phosphorus is boiled with a strong solution of Ba(OH)2
Answer: metaphosphoric acid is heated
Question: Pure phosphine is not combustible while impure phosphine is combustible, this combustibility is due to presence of
- a) P2H4
- b) N2
- c) PH5
- d) P2O5
Answer: P2H4
Question: When orthophosphoric acid is heated to 600°C, the product formed is
- a) HPO3
- b) P2O5
- c) PH3
Answer: HPO3
Question: P2O5 is heated with water to give
- a) orthophosphoric acid
- b) phosphorous acid
- c) hypophosphoric acid
- d) hypophosphorous acid
Answer: orthophosphoric acid
Question: Basicity of orthophosphoric acid is
- a) 3
- b) 5
- c) 2
- d) 4
Answer: 3
Question: PCl3 reacts with water to form
- a) H3PO4 and HCl
- b) H3PO4
- c) PH3
- d) POCl3
Answer: H3PO4 and HCl
Question: H3PO2 is the molecular formula of an acid of phosphorus. Its name and basicity respectively are
- a) hypophosphorous acid and one
- b) hypophosphoric acid and two
- c) hypophosphorous acid and two
- d) phosphorus acid and two
Answer: hypophosphorous acid and one
Question: The structural formula of hypophosphorous acid is
- a)
- b)
- c)
- d)
Answer:
Question: Number of sigma bonds in P4O10 is
- a) 16
- b) 7
- c) 6
- d) 17
Answer: 16
Question: The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is
- a) two
- b) three
- c) one
- d) zero
Answer: two
Question: The number of P – O – P bonds in cyclic metaphosphoric acid is
- a) three
- b) zero
- c) two
- d) four
Answer: three
Question: Oxidation states of P in H4P2O5 , H4P2O6 , and H4P2O7 , are respectively:
- a) + 3, + 4, + 5
- b) + 5, + 3, + 4
- c) + 3, + 5, + 4
- d) + 5, + 4, + 3
Answer: + 3, + 4, + 5
Question: How many bridging oxygen atoms are present in P4O10?
- a) 6
- b) 2
- c) 5
- d) 4
Answer: 6
Question: Which of the following statements is not valid for oxoacids of phosphorus?
- a) Hypophosphorous acid is a diprotic acid
- b) Orthophosphoric acid is used in the manufacture of triple superphosphate
- c) All oxoacids contain tetrahedral four coordinated phosphorus
- d) All oxoacids contain atleast one P = O and one P — OH group
Answer: Hypophosphorous acid is a diprotic acid
Question: What is hybridization of P in PCl5 ?
- a) sp3d
- b) sp3
- c) sp2
- d) None of these
Answer: sp3d
Question: Which of the following is a cyclic phosphate ?
- a) H5P5O15
- b) H3P3O10
- c) H6P4O13
- d) None of these
Answer: H5P5O15
Question: P—O—P bond is present in
- a) Both
- b)
- c)
- d) None of these
Answer: Both
Question: Orthophosphoric acid is
- a) tribasic
- b) monobasic
- c) dibasic
- d) tetrabasic
Answer: tribasic
Question: The oxyacid of phosphorous in which phosphorous has the lowest oxidation state is
- a) hypophosphorous acid
- b) orthophosphoric acid
- c) pyrophosphoric acid
- d) None of these
Answer: hypophosphorous acid
Question: The number of P—O—P bonds in cyclic metaphosphoric acid is
- a) three
- b) zero
- c) two
- d) four
Answer: three
Question: Among the oxyacids of phosphorus, the dibasic acid is
- a) H3PO3
- b) HPO3
- c) H3PO2
- d) None of these
Answer: H3PO3
Question: The basicity of pyrophosphorus acid is
- a) 2
- b) 1
- c) 4
- d) 5
Answer: 2
Question: The oxidation state of phosphorus in cyclotrimetaphosphoric acid is
- a) +5
- b) +2
- c) +3
- d) –3
Answer: +5
Question: Which acid has P – P linkage
- a) Hypophosphoric acid
- b) Metaphosphoric acid
- c) Pyrophosphoric acid
- d) Orthophosphoric acid
Answer: Hypophosphoric acid
Question: In a cyclotrimetaphosphoric acid molecule, how many single and double bonds are present?
- a) 3 double bonds; 9 single bonds
- b) 6 double bonds; 6 single bonds
- c) 3 double bonds; 12 single bonds
- d) Zero double bonds; 12 single bonds
Answer: 3 double bonds; 9 single bonds
Question: Strong reducing behaviour of H3PO2 is due to
- a) Presence of one –OH group and two P–H bonds
- b) High electron gain enthalpy of phosphorus
- c) Presence of two –OH groups and one P–H bond
- d) Low oxidation state of phosphorus
Answer: Presence of one –OH group and two P–H bonds
Question: In solid state PCl5 is a
- a)
- b)
- c) octahedral structure
- d) covalent solid
Answer:
Question: Electron affinity of sulphur is
- a) more than O and Se
- b) more than O but less than Se
- c) less than O but more than Se
- d) equal to O and Se
Answer: more than O and Se
Question: All the elements of oxygen family are
- a) polymorphic
- b) metalloids
- c) non metals
- d) radioactive
Answer: polymorphic
Question: Which shows maximum catenation property ?
- a) S
- b) Te
- c) Se
- d) O
Answer: S
Question: Oxygen and sulphur both are the members of the same group in periodic table but H2O is liquid while H2S is gas because
- a) water molecules are having weak hydrogen bonds between them
- b) H2S is weak acid
- c) electronegativity of sulphur is more
- d) molecular weight of water is more
Answer: water molecules are having weak hydrogen bonds between them
Question: Which of the following hydrides has the lowest boiling point
- a) H2S
- b) H2Te
- c) H2O
- d) None of these
Answer: H2S
Question: Which of the following hydrides is most acidic ?
- a) H2Te
- b) H2O
- c) H2S
- d) H2Se
Answer: H2Te
Question: Which of the following hydrides shows the highest boiling point ?
- a) H2O
- b) H2S
- c) H2Se
- d) None of these
Answer: H2O
Question: Which is the best oxidising agent among the following ?
- a) O
- b) Te
- c) S
- d) Se
Answer: O
Question: Which of the following oxide is amphoteric
- a) SnO2
- b) CaO
- c) CO2
- d) SiO2
Answer: SnO2
Question: Which of the following is not correctly matched
- a) SF6 – solid
- b) SeF4 – liquid
- c) SF4 – gas
- d) None of these
Answer: SF6 – solid
Question: The compound which gives off oxygen on moderate heating is
- a) mercuric oxide
- b) aluminium oxide
- c) cupric oxide
- d) zinc oxide
Answer: mercuric oxide
Question: Oxygen molecule is
- a) paramagnetic with two unpaired electrons
- b) paramagnetic with no unpaired electron(s)
- c) diamagnetic with two unpaired electrons
- d) diamagnetic with no-unpaired electron(s)
Answer: paramagnetic with two unpaired electrons
Question: The number of electrons that are paired in oxygen molecule are
- a) 14
- b) 16
- c) 12
- d) 7
Answer: 14
Question: On heating KClO3 we get
- a) KCl + O2
- b) KCl + O2 + O3
- c) KCl + O3
- d) None of these
Answer: KCl + O2
Question: About 20 km above the earth, there is an ozone layer. Which one of the following statements about ozone and ozone layer is true?
- a) It is beneficial to us as it stops U.V radiation
- b) It is harmful as it stops useful radiation
- c) Ozone has a triatomic linear molecule
- d) Conversion of O3 to O2 is an endothermic reaction
Answer: It is beneficial to us as it stops U.V radiation
Question: Oxygen gas can be prepared from solid KMnO4 by
- a) strongly heating the solid
- b) treating the solid with H2 gas
- c) dissolving the solid in dil. H2SO4
- d) dissolving solid in dil. HCl
Answer: strongly heating the solid
Question: Which of the following statements is correct
- a) Ozone is an allotropic modification of oxygen
- b) Ozone has no relationship with oxygen
- c) Ozone is an isomer of oxygen
- d) Ozone is a resonance hybrid of oxygen
Answer: Ozone is an allotropic modification of oxygen
Question: Which of the following on thermal decomposition gives oxygen gas ?
- a) All of these
- b) Pb3O4
- c) Ag2O
- d) PbO2
Answer: All of these
Question: Which of the following is an acidic oxide?
- a) Mn2O7
- b) N2O
- c) BaO
- d) Na2O
Answer: Mn2O7
Question: Atomicity of sulphur in rhombic sulphur is
- a) 8
- b) 1
- c) 2
- d) 6
Answer: 8
Question: Which of the following is not oxidized by O3 ?
- a) KMnO4
- b) KI
- c) FeSO4
- d) None of these
Answer: KMnO4
Question: Which of the following form of the sulphur shows paramagnetic behaviour
- a) S2
- b) S8
- c) S6
- d) All of these
Answer: S2
Question:
- a) V2O5
- b) CuO
- c) MnO2
- d) None of these
Answer: V2O5
Question: Which of the following oxo acid of sulphur has O–O bond
- a) H2S2O8
- b) H2S2O5
- c) H2S2O7
- d) None of these
Answer: H2S2O8
Question: Carbohydrates on reaction with conc. H2SO4 becomes charred due to
- a) dehydration
- b) oxidation
- c) hydrolysis
- d) hydration
Answer: dehydration
Question: Which of the following is the key step in the manufacture of sulphuric acid ?
- a) Conversion of SO2 to SO3 by the reaction with oxygen in presence of catalyst
- b) Burning of sulphur or sulphide ores in air to generate SO2
- c) Absorption of SO3 in H2SO4 to give oleum
- d) None of these
Answer: Conversion of SO2 to SO3 by the reaction with oxygen in presence of catalyst
Question: Hybridization of S in SO3 is
- a) sp2
- b) sp3
- c) sp2d
- d) None of these
Answer: sp2
Question: By which of the following SO2 is formed
- a) Reaction of conc. H2SO4 with Cu
- b) None of these
- c) Hydrolysis of dil. H2SO4
- d) Reaction of dil. H2SO4 with O2
Answer: Reaction of conc. H2SO4 with Cu
Question: Number of bonds in SO2 are
- a)
- b)
- c)
- d) None of these
Answer:
Question: Bleaching action of SO2 is due to its
- a) reducing property
- b) oxidising property
- c) acidic property
- d) basic property
Answer: reducing property
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