Class XI

In titration, end point is indicated through
  1. Precipitation of salt
  2. Crystallization of salt
  3. Change in color of solution
  4. A pink color
Crystals refers to
  1. A solid that can be dissolved in liquids
  2. A solid that re appears from other substances
  3. A solid that reappears from solution
  4. Can be obtained through sublimation
PH of soil can be controlled through
  1. Acid rains
  2. Hydrolases
  3. Reversible reactions
  4. Neutralization
 Proton number of Fluorine (F) is 9, electron number is
  1. 2,5
  2. 2,7
  3. 2,9
  4. 2,6
Change of orange color of Chromium(VI) (Cr+6) to green color of Chromium(III) (Cr+3) indicates presence of a
  1. Reducing agent
  2. Oxidizing agent
  3. Reagent
  4. Drying agent
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