Question

(i) Why glass wool soaked in water is taken in the hard glass tube?
ii) What metal sample would have been taken in the test tube?
i) Metal + Water - Metal hydroxide + Hydrogen + Heat​

Answer 1

Answer:

(i) Glass wool is used to generate a flow of steam. A lump of glass wool soaked in water is placed at the bottom of the boiling tube. The water present in glass wool forms steam on heating but glass wool does not take part in the reaction itself.

Answer 2

Answer:

i) Glass wool is used to generate a flow of steam. A lump of glass wool soaked in water is placed at the bottom of the boiling tube. The water present in glass wool forms steam on heating but glass wool does not take part in the reaction itself.

ii) Metal sample like Aluminium and Iron as they react with steam formed after heating the soaked glass wool.

iii)Example of Metal + Water - Metal hydroxide + Hydrogen + Heat​
   

• K + H20 - KOH + H2 + Heat
• Na + H20 - NaOH + H2 + Heat