Class XI

 Carbon dioxide (CO2) diffuses
  1. Slowly than hydrogen
  2. Slowly than oxygen
  3. Faster than hydrogen
  4. Faster than oxygen
Energy conservation mechanisms do not include
  1. Insulating lofts with pylons
  2. Insulating cavity walls with polyurethane
  3. Double glazing windows
  4. Prevention of heat loss
Cathodic reduction refers to
  1. Loss of electrons at anode
  2. Gain of electrons at cathode
  3. Loss of electrons at cathode
  4. Gain of electrons at anode
 In Copper Oxide (CuO) and Carbon Monoxide (CO) reaction, oxidizing agent is
  1. CuO
  2. CO
  3. Cu
  4. Cu
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