Which of the following is not a correct statement
  • A
    Resistivity of electrolytes decreases on increasing temperature
  • B
    Resistance of mercury falls on decreasing its temperature
  • CWhen joined in series a $40\, W$ bulb glows more than a $60\, W$ bulb
  • DResistance of $40\, W$ bulb is less than the resistance of $60\, W$ bulb
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