Q1: In paper industry, paper is dried in a __________ dryer.

ANS:B - heated cylinder

In the paper industry, paper is often dried in a heated cylinder dryer. Heated cylinder dryers, also known as rotary dryers or Yankee dryers, are commonly used in the paper industry for drying paper products. These dryers consist of a large rotating cylinder heated from the inside, which comes into contact with the wet paper as it passes over the surface. The heat from the cylinder helps evaporate the moisture from the paper, leaving it dry and ready for further processing. The use of heated cylinder dryers allows for efficient drying of large quantities of paper at high speeds, making them well-suited for the demands of the paper industry. Additionally, they can be designed to provide various levels of heat and airflow to accommodate different types of paper and production requirements.