Q1: Mention the various steps which are involved in drawing a glass tube into a jet.
- Selecting the ideal tube
- Heating the centre of the glass tube
Q2: What type of glass is preferred for drawing out a jet?
Soda-lime glass is used in drawing out a jet.
Q3: Why is the glass tube of a small diameter chosen for drawing out a jet?
Because a larger diameter tube would have to be stretched too far, a small diameter glass tube was chosen.
Q4: Why should the diameter of the borer be less than the diameter of the tube to be inserted in the hole?
This is done to ensure that the tube fits tightly in the hole.
Q5: What is the role of glycerine in the process of boring?
The borer is lubricated with glycerine. This provides a smooth hole on boring.
Q6: Why is it required to round off the freshly cut edges of the glass tube?
The glass tube’s freshly cut edges are sharp. They might hurt fingers as a result of mishandling.
Q7: What is the use of a fume cupboard?
It’s utilised to conduct experiments that need the production of hazardous gases or vapours.
Q8: What type of flame would you use for general heating purposes?
For general heating, a non-luminous oxidising flame is utilised since it produces the most heat due to the full burning of hydrocarbons.
Q9: What is the use of a wash bottle?
It’s used to produce a thin stream of water for cleaning or transferring precipitate.
Q10: Why is the glass tube of a smaller diameter chosen for drawing out a jet?
To draw a jet from a tube with a larger diameter, the tube must be stretched too far, which is not feasible.
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