Questions asked by Nikki

• Back to user's profile
• Given #(n-1)d^3 ns^2# and #(n-1)d^5 ns^2#, of the 2 electron configuration which one would exhibit higher oxidation state explain?
  
• Which has greater resistance Voltmeter or millivoltmeter?
  
• A current is set up in a long copper pipe is there a magnetic field a) inside b) outside the pipe?
  
• IUPAC name of CHF2CBrClF?
  
• Silver atom has completely filled d-orbital in its ground state how can it be a transition element?
  
• Name a transition element which has no variable oxidation state?
  
• What is the magnetic moment of ? 1. CuCl2 and TiCl3 2.MnCl2 and CuSO4
  
• Number of electron transferred in each case when potassium permanganate acts as oxidizing agent give MnO2, Mn²+ Mn(OH) 3 and MnO4²-?
  
• A particular compound of vanadium show a magnetic moment of 3.86BM the oxidation state of vanadium in the compound is( Z=23)?
  
• On heating ammonium dichromate, the gas evolved is?
  
• Explain the origin of diamagnetism and paramagnetism?
  
• The mass of. Carbon anode consumed in the production of 270kg Al metal from bauxite by hall process giving only carbon dioxide?
  
• Rutile is an Ore of?
  
• A cyclotron is accelerating the proton.The applied magnetic field is 2T and the potential difference in the gap is 100kV. To acquire a kinetic energy of 20 MeV the proton has to move between the dees for x times.the value of x is?
  
• Mention any two group of carcinogens with an example for each!?
  
• The molecular formula of a commercial resin used for exchanging ions in water softening is #"C"_8"H"_7("SO"_3)"Na"# molecular weight 206. The maximum uptake of #"Ca"^(2+)# ions by the resin when expressed in mole per gram resin is?
  
• If a flower is to be pollinated by moth it should be A) red B) blue C) purple D) orange E) yellow?
  
• Besides paddy fields cyanobacteria are also found inside vegetative part of A) pinus B) eqisetum C) cycas D) psilotum?
  
• H2S is acidic while water is neutral why?
  
• Which is not an insectv A) spider B) termite C) mosquito D) ant?
  
• What is the importance of enzyme polygalactourinase in plant ?
  
• Very small animals are rarely found in polar regions.give reason?
  
• Predators are prudent In nature .justify the statement?
  
• Why predator are prudent in nature. Justify?
  
• What happens when alkanamine reacts with methyliodide?
  
• Motor vehicles equipped with catalytic converter should run on unleaded petrol .give reason?
  
• Difference between deforestation and reforestation?
  
• Are hippopotamus and rhinosorous herbivores?
  
• True species are A) interbreeding B) sharing the same niche C) feeding on same food D) reproductivly isolated?
  
• Explain the stereiochemical consequences of SN1 reaction by taking 2-bromobutane as an example?
  
• Out of 0.1 molal aqueous solution of glucose and sodium chloride respectively. Which one will have high boiling point?
  
• In lasik eye treatment which rays are used of electromagnetic waves?
  
• Annoymn and synnoymn meaning?