Which of the following is/are the physical test(s) employed for the manufacture of paper? I. Mechanical and strength properties II. Surface properties III. Optical properties IV. Permeability to fluids Select the correct answer using the code given below.
- A. I only
- B. II and III only
- C. I, II and III only
- D. I, II, III and IV ✓
Correct Answer: D. I, II, III and IV
Explanation
During the manufacturing process, paper is tested for mechanical and strength properties (like tear resistance), surface properties (like smoothness), optical properties (like brightness and opacity), and permeability (porosity to air and fluids) to ensure overall quality.
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