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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. The main chemical constituent of clay is ?

  • aluminium silicate
  • zeolites
  • aluminium borosilicate
  • silicon oxide

Answer: Option A

2. Nail polish remover contains ?

  • benzene
  • acetic acid
  • acetone
  • petroleum ether

Answer: Option C

3. What is used to avoid melting of ice ?

  • Gelatine
  • Butane
  • Methane
  • Any acid

Answer: Option A

4. The most abundant rare gas in the atmosphere is ?

  • He
  • Ne
  • Ar
  • Xe

Answer: Option C

5. Which have the maximum density ?

  • Water
  • Benzene
  • Ice
  • Chloroform

Answer: Option A

Read more from - Chemistry Questions Answers
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