Class XI

Sea water has a pH of
  1. 5
  2. 8
  3. 9
  4. 11
 Anodic oxidation refers to the
  1. Loss of electrons at anode
  2. Gain of electrons at cathode
  3. Loss of electrons at cathode
  4. Gain of electrons at anode
Approximate volume can be measured through
  1. Volumetric flask
  2. Burette
  3. Measuring cylinder
  4. Beaker
Optimal temperature for enzymes is
  1. Room temperature
  2. 35-37 °C
  3. 40-45 °C
  4. above 45 °C
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