Q4 of 37 Page 4

State what you will observe when sugar crystals is heated strongly.
State what you will observe when sugar crystals is treated with conc. Sulphuric acid.

  1. The sugar crystal will initially melt. Gradually, they turn brown and start swelling up. They give off large amount of steam. Finally black porous residue of carbon is left behind.
  2. The sugar crystals will initially turn brown. Lot of frothing takes place with the evolution of large amount of heat and steam is given off. Finally a black porous residue of carbon is left behind.

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