Class XI

Oxidation involves
  1. Gain in oxygen
  2. Loss of oxygen
  3. Gain in hydrogen
  4. Gain in electrons
Acid salts do not include
  1. Calcium phosphate
  2. Sodium dihydrogen phosphate
  3. Sodium hydrogen sulphate
  4. Calcium hydrogen carbonate
Incorrect statement is: Mineral acids...
  1. Have simpler molecular structures
  2. Are more corrosive
  3. Commonly found in nature
  4. Are man made
In order to burn, a hydrocarbon needs a
  1. AAn aerobic environment
  2. An anaerobic environment
  3. A little CO2
  4. A lot of CO2
Combining Copper(I) (Cu+) with Oxygen (O2) results in
  1. CuO
  2. Cu2O
  3. CuO2
  4. Cu(OH)2
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