a) 6 hrs
b) 12 hrs
c) 48 hrs
d) 24 hrs
Answer: d
Explanation: As per IS standards, 24 hrs is the time a stone has to be immersed in water to check for water absorption. Time less or more than this would not result in providing the appropriate data.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Join The Discussion