chemical and physical changes

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Across
  1. 1. it is used to neutralise ant bites
  2. 4. it is found in tamarind
  3. 6. it is indicator
  4. 7. it is found in curd
  5. 8. it is found in lime water
  6. 9. it is found in soup
  7. 10. litmus paper is extracted from it
Down
  1. 2. it is found in window cleaner
  2. 3. they are neither acidic nor basic
  3. 5. it is found in vinegar