Class XI

Relative molecular mass of Sulfuric Acid (H2SO4) is
  1. 98
  2. 120
  3. 113
  4. 89
At high temperatures, enzymes...
  1. At high temperatures, enzymes...
  2. Get denatured
  3. Form cations
  4. Form anions
Molar mass of urea NH2CONH2 is
  1. 59.51g/mol
  2. 5 5.89g/mol
  3. 60.055 g/mol
  4. 5.32g/mol
Chemical reaction with oxygen is called
  1. Oxidation
  2. Activation
  3. Combustion
  4. Reduction
Process quicker than filtration but not so effective is
  1. Decanting
  2. Centrifuging
  3. Crystallization
  4. Fractional distillation
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