Q.30. In solution, Xe4F24 tetramers are formed by:
(a) XeF2 (b) XeF4 (c) XeOF4 (d) Solid XeF6
Ans. (d) Solid XeF6
Q.31. Principal quantum number shows the following property: (2015)
(a) Describes the orientation of electron spin in space
(b) Describe angular momentum in the z-direction
(c) Determines the major part of the energy
(d) Describe angular dependence
Ans. (c) Determines the major part of the energy
Q.32. Germanium belongs to group (2015)
(a) 14 (b) 16 (c) 12 (d) 11
Ans. (a) 14
Q.33. Pseudohalogen is:
(a) (CN)2 (b) (H3Si)3N (c) Na2C2 (d) PF3 (2015)
Ans. (c) Na2C2
Q.34. Which is not example of sp3d by hybridization? (2015) (a) PCl5 (b) XeF2 (c) SF6 (d) SF4
Ans. (c) SF6
Q.35. Which is not true for fluorocarbons? (2015)
(a) Not attacked by acids (b) Used as lubricants
(c) Stable towards hydrolysis (d) Not attacked by molten sodium
Ans. (d) Not attacked by molten sodium
Q.36. Decreasing order of catenation is: (2015)
(a) Pb > Ge > Sl > Sn (b) Ge > Pb > Sn > Si
(c) Sn > Si > Ge > Pb (d) Si > Ge » Sn > Pb
Ans. (d) Si > Ge » Sn > Pb
Q.37. Which is unknown? (2015)
(a) SiCl62- (b) SiF62- (c) Mg2SiO4 (d) CaSiO3
Ans. (b) SiF62-
Q.38 Example of cyclic silicate is: (2015)
(a) Asbestos (b) Zeolites (c) Feldspars (d) Beryl
Ans. (d) Beryl
Q.39. Which is metalloid? (2015)
(a) N (b) As (c) Bi (d) P
Ans. (b) As
Q.40. Covalent character decreases in the order: (2015) (a) P > As > Sb > Bi (b) As > Bi > P > Sb
(c) Sb > P > AS > Bi (d) P > Bi > Sb > As
Ans. (a) P > As > Sb > Bi
Q.41. Which oxide is acidic? (2015)
(a) Sb (III) oxide (b) P(III) oxide (c) Bi (III) oxide (d) Al2O3
Ans. (b) P(III) oxide
Q.42. Which statement is false? (2015)
(a) CO32- ion is flat (b) CO44- ion exists
(c) Carbonate ions are colourless (d) Group 1 carbonates are stable to heat
Ans. (b) CO44- ion exists
Q.43. Which is unknown? (2015)
(a) PbI4 (b) SnF4 (c) PbF4 (d) CF4
Ans. (a) PbI4
Q.44. Which property is not associated with Freons? (2015)
(a) They are unreactive (b) They are non-toxic
(c) Used as refrigeration fluids (d) Not used as the propellant in aerosols.
Ans. (d) Not used as the propellant in aerosols.
Q.45. Stability of dihalides increases in the order:
(a) GeX2 < PbX2 < SiX2 < SnX2 (b) SiX2 < GeX2 < SnX2 < PbX2
(c) SnX2 < SiX2 < PbX2 < GeX2 (d) PbX2 < SiX2 < SnX2 < GeX2
Ans. (b) SiX2 < GeX2 < SnX2 < PbX2
Q.46. Which statement is wrong? (2015)
(a) Liquid nitrogen is used as a refrigerant.
(b) N2 has a lower boiling point than O2
(c) Phosphorous is essential for life
(d) Bi is not used in low melting alloys.
Ans. (d) Bi is not used in low melting alloys.
Q.47. Nitrogen does not show the following property: (2015)
(a) Dinitrogen is colourless (b) Dinitrogen is dimagnetic
(c) It is bad smelling gass (d) It is tasteless gas
Ans. (c) It is bad smelling gass
Q.48. Lithium does not show the following property: (2015)
(a) It is softer than sodium
(b) It is silvery white metal
(c) Forms Li3N
(d) Has lowest density of any solid at room temperature
Ans. (a) It is softer than sodium
Q.49. Nitrogen shows + V oxidation number in the compound: (2015)
(a) N2O6 (b) N2O5 (c) N2O4 (d) NO
Ans. (b) N2O5
Q.50. What is not true? (2015)
(a) Electron-precise compounds are formed by elements of group 14.
(b) Water is an example of electron-rich hydrides
(c) BeH2 does not form polymeric structure
(d) B2H6 is an example of electron-deficient hydrides.
Ans. (c) BeH2 does not form polymeric structure
Q.51. Which is a wrong statement? (2015)
(a) B2O3 is acidic (b) Al2O3 is amphoteric
(c) Al(OH)3 is acidic (d) Hydrides of boron are gaseous
Ans. (c) Al(OH)3 is acidic
Q.52. Order of size of p orbitals is:
(a) 4p > 3p > 2p (b) 4p > 2p > 3p
(c) 2p > 4p > 3p (d) 3p > 4p > 2p (2015) Ans. (a) 4p > 3p > 2p
Q.53. Order of increasing metallic character is
(a) Si < Be < Mg < Na (b) Mg < Si < Na < Be
(c) Be < Na < Si < Mg (d) Na < Si < Mg < Be (2015) Ans. (a) Si < Be < Mg < Na
Q.54. Number of structurally different forms of ice is (2015)
(a) 5 (b) 3 (c) 9 (d) 7
Ans. (b) 3
Q.55. Boiling points of alkali metals follow the following trend:
(a) Chloride > Fluoride > Bromide > Iodide
(b) Fluoride > Chloride > Bromide > Iodide
(c) Bromide > Chloride > Fluoride > Iodide
(d) Iodide > Bromide > Fluoride > Chloride (2015)
Ans. (b) Fluoride > Chloride > Bromide > Iodide
Q.56. What is not true for HOCl? (2015)
(a) It is not very stable (b) Known only in aqueous solution
(c) It is a strong acid (c) It is a good oxidizing agent
Ans. (c) It is a strong acid
Q.57. Plaster of Paris is: (2015)
(a) (b) NaF (c) B2O3 (d) MgSO4
Ans. (a)
Q.58. Tellurium is the member of the group (2015) (a) 16 (b) 13 (c) 14 (d) 15
Ans. (a) 16
Q.59. Which statement is wrong?
(a) Bond length increases as bond order increases.
(b) C = C is less than twice as strong as a C - C bond.
(c) N = N is more than twice as strong as an N - N bond
(d) Phosphorus does not form odd electron molecule. (2015) Ans. (a) Bond length increases as bond order increases.
Q.60. Which is a wrong statement?
(a) Borohydrides are formed with upto 12 B atoms
(b) All higher boranes are electron deficient.
(c) Closo-borohydrides are typically thermally unstable.
(d) Pentaborane (n) is highly reactive. (2015)
Ans. (c) Closo-borohydrides are typically thermally unstable.
(a) XeF2 (b) XeF4 (c) XeOF4 (d) Solid XeF6
Ans. (d) Solid XeF6
Q.31. Principal quantum number shows the following property: (2015)
(a) Describes the orientation of electron spin in space
(b) Describe angular momentum in the z-direction
(c) Determines the major part of the energy
(d) Describe angular dependence
Ans. (c) Determines the major part of the energy
Q.32. Germanium belongs to group (2015)
(a) 14 (b) 16 (c) 12 (d) 11
Ans. (a) 14
Q.33. Pseudohalogen is:
(a) (CN)2 (b) (H3Si)3N (c) Na2C2 (d) PF3 (2015)
Ans. (c) Na2C2
Q.34. Which is not example of sp3d by hybridization? (2015) (a) PCl5 (b) XeF2 (c) SF6 (d) SF4
Ans. (c) SF6
Q.35. Which is not true for fluorocarbons? (2015)
(a) Not attacked by acids (b) Used as lubricants
(c) Stable towards hydrolysis (d) Not attacked by molten sodium
Ans. (d) Not attacked by molten sodium
Q.36. Decreasing order of catenation is: (2015)
(a) Pb > Ge > Sl > Sn (b) Ge > Pb > Sn > Si
(c) Sn > Si > Ge > Pb (d) Si > Ge » Sn > Pb
Ans. (d) Si > Ge » Sn > Pb
Q.37. Which is unknown? (2015)
(a) SiCl62- (b) SiF62- (c) Mg2SiO4 (d) CaSiO3
Ans. (b) SiF62-
Q.38 Example of cyclic silicate is: (2015)
(a) Asbestos (b) Zeolites (c) Feldspars (d) Beryl
Ans. (d) Beryl
Q.39. Which is metalloid? (2015)
(a) N (b) As (c) Bi (d) P
Ans. (b) As
Q.40. Covalent character decreases in the order: (2015) (a) P > As > Sb > Bi (b) As > Bi > P > Sb
(c) Sb > P > AS > Bi (d) P > Bi > Sb > As
Ans. (a) P > As > Sb > Bi
Q.41. Which oxide is acidic? (2015)
(a) Sb (III) oxide (b) P(III) oxide (c) Bi (III) oxide (d) Al2O3
Ans. (b) P(III) oxide
Q.42. Which statement is false? (2015)
(a) CO32- ion is flat (b) CO44- ion exists
(c) Carbonate ions are colourless (d) Group 1 carbonates are stable to heat
Ans. (b) CO44- ion exists
Q.43. Which is unknown? (2015)
(a) PbI4 (b) SnF4 (c) PbF4 (d) CF4
Ans. (a) PbI4
Q.44. Which property is not associated with Freons? (2015)
(a) They are unreactive (b) They are non-toxic
(c) Used as refrigeration fluids (d) Not used as the propellant in aerosols.
Ans. (d) Not used as the propellant in aerosols.
Q.45. Stability of dihalides increases in the order:
(a) GeX2 < PbX2 < SiX2 < SnX2 (b) SiX2 < GeX2 < SnX2 < PbX2
(c) SnX2 < SiX2 < PbX2 < GeX2 (d) PbX2 < SiX2 < SnX2 < GeX2
Ans. (b) SiX2 < GeX2 < SnX2 < PbX2
Q.46. Which statement is wrong? (2015)
(a) Liquid nitrogen is used as a refrigerant.
(b) N2 has a lower boiling point than O2
(c) Phosphorous is essential for life
(d) Bi is not used in low melting alloys.
Ans. (d) Bi is not used in low melting alloys.
Q.47. Nitrogen does not show the following property: (2015)
(a) Dinitrogen is colourless (b) Dinitrogen is dimagnetic
(c) It is bad smelling gass (d) It is tasteless gas
Ans. (c) It is bad smelling gass
Q.48. Lithium does not show the following property: (2015)
(a) It is softer than sodium
(b) It is silvery white metal
(c) Forms Li3N
(d) Has lowest density of any solid at room temperature
Ans. (a) It is softer than sodium
Q.49. Nitrogen shows + V oxidation number in the compound: (2015)
(a) N2O6 (b) N2O5 (c) N2O4 (d) NO
Ans. (b) N2O5
Q.50. What is not true? (2015)
(a) Electron-precise compounds are formed by elements of group 14.
(b) Water is an example of electron-rich hydrides
(c) BeH2 does not form polymeric structure
(d) B2H6 is an example of electron-deficient hydrides.
Ans. (c) BeH2 does not form polymeric structure
Q.51. Which is a wrong statement? (2015)
(a) B2O3 is acidic (b) Al2O3 is amphoteric
(c) Al(OH)3 is acidic (d) Hydrides of boron are gaseous
Ans. (c) Al(OH)3 is acidic
Q.52. Order of size of p orbitals is:
(a) 4p > 3p > 2p (b) 4p > 2p > 3p
(c) 2p > 4p > 3p (d) 3p > 4p > 2p (2015) Ans. (a) 4p > 3p > 2p
Q.53. Order of increasing metallic character is
(a) Si < Be < Mg < Na (b) Mg < Si < Na < Be
(c) Be < Na < Si < Mg (d) Na < Si < Mg < Be (2015) Ans. (a) Si < Be < Mg < Na
Q.54. Number of structurally different forms of ice is (2015)
(a) 5 (b) 3 (c) 9 (d) 7
Ans. (b) 3
Q.55. Boiling points of alkali metals follow the following trend:
(a) Chloride > Fluoride > Bromide > Iodide
(b) Fluoride > Chloride > Bromide > Iodide
(c) Bromide > Chloride > Fluoride > Iodide
(d) Iodide > Bromide > Fluoride > Chloride (2015)
Ans. (b) Fluoride > Chloride > Bromide > Iodide
Q.56. What is not true for HOCl? (2015)
(a) It is not very stable (b) Known only in aqueous solution
(c) It is a strong acid (c) It is a good oxidizing agent
Ans. (c) It is a strong acid
Q.57. Plaster of Paris is: (2015)
(a) (b) NaF (c) B2O3 (d) MgSO4
Ans. (a)
Q.58. Tellurium is the member of the group (2015) (a) 16 (b) 13 (c) 14 (d) 15
Ans. (a) 16
Q.59. Which statement is wrong?
(a) Bond length increases as bond order increases.
(b) C = C is less than twice as strong as a C - C bond.
(c) N = N is more than twice as strong as an N - N bond
(d) Phosphorus does not form odd electron molecule. (2015) Ans. (a) Bond length increases as bond order increases.
Q.60. Which is a wrong statement?
(a) Borohydrides are formed with upto 12 B atoms
(b) All higher boranes are electron deficient.
(c) Closo-borohydrides are typically thermally unstable.
(d) Pentaborane (n) is highly reactive. (2015)
Ans. (c) Closo-borohydrides are typically thermally unstable.
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