Question

Danner process is used to prepare glass _________ continuously.

• A. Bulb
• B. Tube
• C. Sheet
• D. Fiber

Hint:

The Danner process is a continuous glass tube manufacturing process, used for producing test tubes, fluorescent lamp tubes, and glass rods.

Answer 1

The Correct Option is B

The Danner process is a continuous glass-forming technique used specifically for manufacturing glass tubes and rods. Step 1: Understanding the Danner Process - The Danner process involves a rotating mandrel (hollow cylinder) through which molten glass flows and forms a continuous tube. - The size and thickness of the glass tube can be controlled by air pressure and speed. - This method is widely used for producing test tubes, glass tubing, and fluorescent lamp envelopes.

Step 2: Evaluating the Options - Option (A) - Incorrect: Bulbs are not manufactured using the Danner process. - Option (B) - Correct: The Danner process is specifically designed for producing glass tubes. - Option (C) - Incorrect: Sheets are formed using different processes like the Fourcault or Pilkington process. - Option (D) - Incorrect: Glass fibers are typically made using fiber drawing techniques, not the Danner process.

Step 3: Conclusion Since the Danner process is used for manufacturing glass tubes continuously, the correct answer is option (B).