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Permanent hardness of water is due to the presence of ?

  • Magnesium bicarbonate
  • Calcium bicarbonate
  • Sodium bicarbonate
  • Calcium sulphate

Answer: Option D

Similar Questions :

1. What among following is used to produce artificial rain ?

  • copper oxide
  • carbon monoxide
  • silver iodide
  • silver nitrate

Answer: Option C

2. Which element found in all organic compounds ?

  • carbon
  • nitrogen
  • calcium
  • none of them

Answer: Option A

3. What is the chemical name of table salt ?

  • Sodium nitrate
  • Ammonium chloride
  • Sodium chloride
  • Calcium chloride

Answer: Option C

4. The gas used for artificial ripening of green fruit is ?

  • ethane
  • ethylene
  • carbon dioxide
  • acetylene

Answer: Option B

5. Natural rubber is a polymer derived from ?

  • ethylene
  • propylene
  • isoprene
  • butadiene

Answer: Option C

Read more from - Chemistry Questions Answers
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