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State whether the following statements are true or false. Correct the false statements.

(a) All substances are either acidic or basic.
(b) A compound if acidic will turn all indicators red.
(c) Lime water turns red litmus blue.
(d) Common salt dissolved in water turns blue litmus red.
(e) Phenolphthalein is a natural indicator.
(f) Calamine can be used to treat ant’s sting.
(g) Lemon water is basic in nature.

Answers (1)

  1. False- Substance can be acidic, basic or neutral in nature
  2. False- Acids do not turn all indicators red.
  3. True-Lime water is basic in nature.
  4. False- Color of the litmus paper will not change at all as it is neutral solution 
  5. False- Phenopthalein is man-made indicator
  6. True
  7. False- Lemon water is acidic in nature
Posted by

Sumit Saini

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