InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following is a false statement ?A. radon is obtained by the decay of radiumB. helium is an inert gasC. xenon is the most reacting among rate gasesD. the most abundant rare gas in the atmosphere is helium |
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Answer» Correct Answer - D |
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| 52. |
The last member of the family of inert gases isA. ArgonB. RadonC. XenonD. Neon |
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Answer» Correct Answer - B |
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| 53. |
The order of abunndance of inert gases in the atmosphere isA. `Ar lt Ne lt Xe`B. `Ar gt Ne gt Xe`C. `Ar gt Xe gt Ne`D. `Ne gt Ar gt Xe` |
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Answer» Correct Answer - B |
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| 54. |
The least abundant inert gas in the atmosphere is by volumeA. NeB. HeC. ArD. Xe |
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Answer» Correct Answer - A |
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| 55. |
Which of the following is the correct sequence of the noble gases in their in the periodic table ?A. Ar, He, Kr, Ne, Rn, XeB. He, Ar, Ne, Kr, Xe, RnC. He, Ne, Kr, Ar, Xe, RnD. He, Ne, Ar, Kr, Xe, Rn |
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Answer» Correct Answer - D |
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| 56. |
The solubility of noble gases in water shows the orderA. `He gr Ar gt Kr gt Ne gt Xe`B. `He gt Ne gt Ar gt Kr gt Xe`C. `Xe gt Kr gt Ar gt Ne gt He`D. None of these |
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Answer» Correct Answer - C |
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| 57. |
When `PtE_(6)` vapour mixed with an equal volume of Xe, the gases combined immediatedly at room temperature and produces a yellow solid X at `66^(@)C`, the X is correcty represented as :A. `Xe^(+) [PtF_(6)]^(-)`B. `Xe_(2)^(+)[PtF_(6)]^(-)`C. `O_(2)^(+)[PtF_(6)]^(-)`D. `[XeF]^(+) [Pt_(2)F_(11)]^(-)` |
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Answer» Correct Answer - D |
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| 58. |
What is the atomic number (Z) of the noble gas that reacts with fluorine ?A. 54B. 10C. 18D. 2 |
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Answer» Correct Answer - A |
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| 59. |
Which of the following has `SP^(3)` hybridization ?A. `XeO_(3)`B. `BCl_(3)`C. `XeF_(4)`D. `BBr_(3)` |
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Answer» Correct Answer - A |
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| 60. |
The noble gas with highest ionization energy isA. HeB. ArC. XeD. Kr |
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Answer» Correct Answer - A |
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| 61. |
The noble gas which behaves abnormally in liquid state isA. XeB. NeC. HeD. Ar |
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Answer» Correct Answer - C |
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| 62. |
Match the following : |
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Answer» Correct Answer - A-qr; B-ps; C-q;D-ps |
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| 63. |
Which of the following gaseous molecules is monoatomic ?A. ChlorineB. HeliumC. OxygenD. Nitrogen. |
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Answer» Correct Answer - B |
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| 64. |
`XeO_(4)` contains :A. four `pi` - bonds, and the remaining three electron pairs form a pyramidB. three `pi` - bonds, and the remaining four electron pairs form square planar sructureC. three `pi` - bonds, and the remaining five electron pairs form a trigonal bipyramidD. four `pi` - bonds, and the remaining four electron pairs form a tetrahedron |
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Answer» Correct Answer - D |
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| 65. |
The nature of `pi` - bonds in `XeO_(3)` :A. two `(p pi- p pi)` and one `(p pi- d pi)`B. one `(p pi-p pi)` and two `(p pi-d pi)`C. three `(p pi- d pi)`D. three `(p pi- p pi)` |
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Answer» Correct Answer - C |
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| 66. |
First stable compound of inert gas was prepared byA. Rayleigh and RamsayB. BartlettC. Frankland and LockyerD. Cavendish |
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Answer» Correct Answer - B |
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| 67. |
`XeF_(6)` on complete hydroloysis givesA. `XeO_(4)`B. `XeOF_(2)`C. `XeOF_(4)`D. `XeO_(3)` |
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Answer» Correct Answer - D |
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| 68. |
`XeF_(6)` on complete hydroysis gives.A. XeB. `XeO_(2)`C. `XeO_(3)`D. `XeO_(4)` |
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Answer» Correct Answer - C |
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| 69. |
Noble gases are group of elements which exhibit very :A. High chemical activityB. Much paramagnetic propertiesC. Maximum electronegativityD. Low chemical activity |
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Answer» Correct Answer - D |
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| 70. |
`XeF_(6)` on reaction with CsF gives:A. `Cs[XeF_(7)]`B. `[XeF_(4)][CsF_(3)]`C. `XeF_(8)`D. `[XeF_(5)] [CsF_(2)]` |
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Answer» Correct Answer - A |
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| 71. |
Which of the following noble gases is used in the treatment of cancer ?A. XeB. ArC. RnD. Kr |
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Answer» Correct Answer - C |
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| 72. |
Which of the following is a superfluid ?A. KryptonB. Argon IIC. Helium IIID. Helium I |
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Answer» Correct Answer - C |
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| 73. |
Viscosity is very low forA. ArB. He(I)C. He(II)D. Kr |
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Answer» Correct Answer - C |
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| 74. |
Which one of the following statements regarding helium is incorrect?A. It is used to produce and sustain powerful superconducting magnetsB. It is used as a cryogenic agent for carrying out experiments at low temperaturesC. It is not used to fill gas balloons instead of hydrogen because it is lighter and non-inflammableD. It is used in gas-cooled nuclear reactors |
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Answer» Correct Answer - C |
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| 75. |
The lowest boiling point of helium is due to itsA. inertnessB. Gaseous natureC. High polarisabilityD. Weak van der Waals forces between atoms |
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Answer» Correct Answer - D |
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| 76. |
Which of the following is a product in the explosion of hydrogen bomb ?A. KrB. NeC. HeD. Xe |
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Answer» Correct Answer - C |
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| 77. |
The gas that gives superfluid on cooling at `2.2K` isA. ArB. RnC. KrD. He |
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Answer» Correct Answer - D |
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| 78. |
Helium - oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture, becauseA. helium is much less soluble in blood than nitrogenB. nitrogen is much less soluble in blood than heliumC. due to high pressure nitrogen reacts with oxygen to given posisonous nitric oxide.D. nitrogen is highly soluble in water. |
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Answer» Correct Answer - A |
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| 79. |
Helium mixed with oxygen is used in the treatment ofA. Beri beriB. Burning feetC. Joints burningD. Asthma |
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Answer» Correct Answer - D |
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| 80. |
The coloured discharge tubes for advertisement mainly containsA. XeB. HeC. NeD. Ar |
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Answer» Correct Answer - C |
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| 81. |
Inversion temperature of helium is very low. So when helium is allowed to expand into vacuum it getsA. CooledB. HeatedC. Neither cooled, nor heatedD. Liquified |
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Answer» Correct Answer - B |
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| 82. |
Liquid Helium at `2.2K` and at 1 atm pressure flows in the upward direction. It is because of its lowA. boiling pointB. heat of vapourisationC. viscosityD. surface tension |
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Answer» Correct Answer - C |
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| 83. |
Helium is subjected to electrical discharge. The following species is not present in the discharge tubeA. `He^(+)`B. `He_(2)^(+)`C. `He_(2)`D. He |
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Answer» Correct Answer - C |
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| 84. |
`(A)+SbF_(5)to[XeF_(3)]^(+)[SbF_(6)]^(-)` Compound (A) isA. II and III onlyB. I,II and IV onlyC. III and IV onlyD. I,II,III and IV |
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Answer» Correct Answer - B |
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| 85. |
The number of `pi` bonds in perxenate ion is : |
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Answer» Correct Answer - 2 |
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| 86. |
White crystalline solid (A) reacts with `H_2` to form a highly associated liquid (B) and a monoatomic , colourless gas (C ). The liquid (B) is used for etching glass. Compound (A) undergoes hydrolysis slowly to form (C ), (B) and a diatomic gas (D ) whose IE is almost similar to that of (C ). (B) forms an addition compound with KF to form (E) which is electrolysed in the molten state to form a most reactive gas (F) which combines with (C ) in 2:1 ratio of produce (A). Which of the following is correct for the white crystalline solid (A) ?A. linear, spB. triangular, `sp^(2)`C. linear, `sp^(3)d`D. V - shape, `sp^(3)` |
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Answer» Correct Answer - C |
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| 87. |
White crystalline solid (A) reacts with `H_2` to form a highly associated liquid (B) and a monoatomic , colourless gas (C ). The liquid (B) is used for etching glass. Compound (A) undergoes hydrolysis slowly to form (C ), (B) and a diatomic gas (D ) whose IE is almost similar to that of (C ). (B) forms an addition compound with KF to form (E) which is electrolysed in the molten state to form a most reactive gas (F) which combines with (C ) in 2:1 ratio of produce (A). According to Molecular Orbital Theory, which of the following is correct about the molecule (D) ?A. only ionic bondsB. only ionic and covalent bondsC. ionic, covalent and metallic bondsD. ionic, covalent and Hydrogen bonds |
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Answer» Correct Answer - D |
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| 88. |
Which one of the following is a correct pair with respect to molecular formula of xenon compound and hybridisation state of xenon in it ?A. `XeF_(4), sp^(3)`B. `XeF_(2), sp`C. `XeF_(2), sp^(3)d`D. `XeF_(4), sp` |
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Answer» Correct Answer - C |
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| 89. |
If the electron pair forming a bond between two atoms and B is not in the center then the bond is ?A. `XeF_(6)`B. `XeO_(3)F_(2)`C. `XeO_(4)`D. `Ba_(2)[XeO_(6)]^(4-)` |
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Answer» Correct Answer - A::B::C::D |
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