p Block Elements MCQs | MISCELLANEOUS questions

p Block Elements MCQs | MISCELLANEOUS questions Oxidation number of nitrogen in which among the oxides of nitrogen is the lowest? [MH-CE...

p Block Elements MCQs | MISCELLANEOUS questions

  1. Oxidation number of nitrogen in which among the oxides of nitrogen is the lowest? [MH-CET 2014] 
    (A) Nitric oxide
    (B) Nitrous oxide
    (C) Nitrogen dioxide
    (D) Nitrogen trioxide

  2. What is the geometry of molecule of bromine penta fluoride ? [MH-CET 2014]
    (A) square planar
    (B) trigonal bipyramidal
    (C) square pyramidal
    (D) octahedral

  3. Which statement is NOT correct about fullerene C60? [MH-CET 2014] 
    (A) It contains 20 six membered rings and 12 five membered rings 
    (B) All carbon atoms undergo SP2 hybridization 
    (C) A six membered ring is fused with six membered rings only 
    (D) A five membered ring is fused with six membered ring only 

  4. Density of carbon monoxide is maximum at [Karnataka CET 2014] 
    (A) 2 atm and 600 K 
    (B) 0.5 atm and 273 K 
    (C) 6 atm and 1092 K 
    (D) 4 atm and 500 K 

  5. For the properties mentioned, the correct trend for the different species is in [Karnataka CET 2014] 
    (A) strength as Lewis acid – BCl3 > AlCl3 > GaCl3 
    (B) inert pair effect – Al > Ga > In 
    (C) oxidising property – Al+3 > In+3 > Tl+3 
    (D) first ionization enthalpy – B > Al > Tl 

  6. In Ramsay and Rayleigh’s isolation of noble gases from air, the nitrogen of the air is finally converted into [Karnataka CET 2011]
    A NO and NO2
    B NaNO2 only
    C NaNO2 and NaNO3 
    D NaNO3 only
  7. Which noble gas is most abundant in atmosphere? [Delhi PMT 2010] 
    A) He 
    B) Ne 
    C) Ar 
    D) Kr

  8. Molecules of a noble gas do not possess vibrational energy because a noble gas ______. [Karnataka CET 2010]
    A is chemically inert
    B is monoatomic
    C is diamagnetic
    D has completely filled shells
  9. Argon is used [Karnataka CET 2009] 
    A To obtain low temperature
    B In high temperature welding
    C In radio therapy for treatment of cancer
    D In filling airships
  10. The function of Fe(OH)3 in the contact process is [Karnataka CET 2009] 
    A to detect colloidal impurity
    B to remove moisture
    C to remove dust particles
    D to remove arsenic impurity
  11. Which is the most easily liquefiable rare gas? [Karnataka CET 2008]
    A Xe 
    B Kr
    C Ar
    D Ne
  12. Excess of PCl5 reacts with conc. H2SO4 giving [Karnataka CET 2008] 
    A chlorosulphonic acid 
    B thionyl chloride 
    C sulphuryl chloride 
    D sulphurous acid

  13. When conc. H2SO4 is heated with P2O5 , the acid is converted into [Karnataka CET 2007] 
    A sulphur
    B sulphur dioxide
    C sulphur trioxide 
    D a mixture of sulphur dioxide and sulphur trioxide
  14. The noble gas mixture is cooled in a coconut bulb at 173 K. The gases that are not adsorbed are [Karnataka CET 2007] 
    A He and Ne 
    B Ar and Kr
    C He and Xe
    D Ne and Xe

  15. The brown ring test for nitrates depends on [Karnataka CET 2006] 
    A) reduction of ferrous sulphate to iron
    B) oxidation of nitric oxide to nitrogen dioxide
    C) the reduction of nitrate to nitric oxide 
    D) oxidising action of sulphuric acid
  16. When plants and animals decay, the organic nitrogen is converted into inorganic nitrogen. The inorganic nitrogen is in the form of _____.[Karnataka CET 2005] 
    A Ammonia 
    B Elements of nitrogen
    C Nitrates
    D Nitrides

  17. Among the halogens, the one which is oxidised by nitric acid is: [Karnataka CET 2004]
    A Chlorine
    B Bromine
    C Fluorine
    D Iodine

  18. In froth floatation process for the purification of ores, the particles of ore float because [Karnataka CET 2004] 
    A They are insoluble
    B They bear electrostatic charge
    C Their surface is not easily wetted by water
    D They are light
  19. For the manufacture of NH3 by the following reaction N2 + 3H2 →2NH3+ 21.9 kCal the favorable conditions are [AFMC 2001 ]
     A low temperature, high pressure and catalyst
     B high temperature, high pressure and catalyst
     C high temperature, low pressure and catalyst
     D low temperature, low pressure and catalyst
  20. Which of the following fluoride does not exist? [ MP CEE 1993]
     A NF5
     B PF5
     C AsF5
     D SbF5
  21. NH4Cl solution is
     A Neutral
     B acidic
     C basic
     D amphoteric
  22. The maximum concentration of nitrogen is present in: [AFMC 2003]
     A nitrolim
     B calcium ammonium nitrate
     C ammonium sulphate
     D urea
  23. Which is the most reactive species of phosphorus? [AFMC 2003]
     a) White
     b) Red
     c) Scarlet
     d) Violet


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Advanced Chemistry: p Block Elements MCQs | MISCELLANEOUS questions
p Block Elements MCQs | MISCELLANEOUS questions
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