engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Environmental Engineering Sewage Effluent Discharge Standards
Which of the following is NOT true about PVC pipes?
1
They have no problem of incrustation
2
They possess low coefficient of expansion as compared to cast-iron or galvanized-iron pipes
3
They have good insulation properties hence the temperature of water passing through such pipes is not effected by outside temperature
4
They possess high Hazen Williams Constant and it results into adaptation of smaller size of PVC pipes compared to other conventional materials