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What is hottest part of the gas flame is called ?

  • blue zone
  • luminous zone
  • dark zone
  • non-luminous zone
Similar Questions :

1. Which one is an organic Acid ?

  • Sulphuric
  • Citric
  • Nitric
  • Phosphoric

2. Atomic number is equal to

  • Number of electrons
  • Number of nutron
  • Number of protons
  • Total number of protons and neutrons

3. Which of the following gases is the most toxic?

  • Carbon dioxide
  • Sulphur dioxide
  • Carbon monoxide
  • Acetic acid

4. The most electronegative element among the following is

  • sodium
  • bromine
  • fluorine
  • oxygen

5. pH of blood is ?

  • 10.4
  • 9
  • 7.4
  • 4
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