Class XI

Rate of decomposition of hydrogen peroxide can be expedited through
  1. Glycerin
  2. Manganese oxide
  3. Vanadium oxide
  4. Platinum
Enzymes cannot
  1. Operate over a wide range of pH
  2. Act as biological catalysts
  3. Be highly specific
  4. Be highly specific
 Diazo reagent is used as a locating agent in chromatography of
  1. Picric acids
  2. Benzoic acids
  3. Phenolic acids
  4. Salicylic acid
 Combining Copper(II) (Cu+2) with Oxygen (O2) results in
  1. CuO
  2. Cu2O
  3. CuO2
  4. Cu(OH)2
Molar mass of (NH4)2SO4
  1. 113.19g/mol
  2. 124.21g/mol
  3. 141.39g/mol
  4. 132.139 g/mol
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