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Why is phosphorus kept under water ?

  • to make it wet
  • to make it durable
  • water forms a protective coating on it
  • to save it from catching fire when exposed to dry air

Answer: Option D

Similar Questions :

1. The metal that is used as a catalyst in the hydrogenation of oils is ?

  • Pb
  • Ni
  • Cu
  • Pt

Answer: Option B

2. What is used to avoid melting of ice ?

  • Gelatine
  • Butane
  • Methane
  • Any acid

Answer: Option A

3. Human bone does not contain

  • calcium
  • carbon
  • oxygen
  • phosphorous

Answer: Option C

Explanation:

Human bone contains calcium, carbon, phosphorous.

4. The term PVC used in the plastic industry stands for

  • polyvinyl chloride
  • polyvinyl carbobate
  • phosphor vanadiu chloride
  • phosphavinyl chloride

Answer: Option A

5. Which have maximum number of isotopes ?

  • Bromine
  • Aluminium
  • Polonium
  • Carbon

Answer: Option C

Read more from - Chemistry Questions Answers
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