a) 250 AD
b) 100 AD
c) 105 AD
d) 500 AD
Answer: c
Explanation: The first authentic papermaking, which is the formation of a cohesive sheet from the rebonding of separated fibers, has been attributed to Ts’ai-Lun of China in 105 AD, who used bamboo, mulberry bark and rags.
Related Posts
__________ uses reflectance & absorbance principles for calculating the moisture content.
_________ method id based on dielectric principle.
______________ of moisture measurement is based on chemical reactions.
The oven drying methodology consists of heating by ________
Halogen and infrared drying are the examples of _________________
_____________ is the amount of moisture a material will absorb relative to ambient temperature and humidity conditions.
What is the critical point of water?
Join The Discussion