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What is hottest part of the gas flame is called ?

  • blue zone
  • luminous zone
  • dark zone
  • non-luminous zone

Answer: Option D

Similar Questions :

1. Enzymes are

  • Fatty acids
  • Carbohydrates
  • Nucleic acids
  • Proteins

Answer: Option D

2. Homo nuclear molecules contain ?

  • polar bond
  • covalent bond
  • ionic bond
  • coordinate bond

Answer: Option B

3. Conduction band electrons have more mobility than holes because they are

  • experience collision more frequently
  • experience collision less frequently
  • have negative charge
  • need less energy to move them

Answer: Option B

4. Permanent hardness of water is due to the presence of ?

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

Answer: Option D

5. What is used to avoid melting of ice ?

  • Gelatine
  • Butane
  • Methane
  • Any acid

Answer: Option A

Read more from - Chemistry Questions Answers
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