In very first stage of decomposition of the organic matter in sewage________________?
A. Nitrites are formed
B. Nitrates are formed
C. Carbondioxide is formed
D. Ammonia is formed
A. Nitrites are formed
B. Nitrates are formed
C. Carbondioxide is formed
D. Ammonia is formed
A. principle of conservation of mass holds
B. velocity and pressure are inversely proportional
C. total energy is constant throughout
D. the energy is constant along a stream-line but may vary across streamlines
E. none of the above
A. Water test
B. Smoke test
C. Straightness test
D. All the above
A. Are used for carrying sewage and drainage from houses
B. Are manufactured from clays and shale
C. After casting are dried and burnt at temperature 150°C, 700°C and 1200°C
D. All the above
A. the metal piece will simply float over the mercury
B. the metal piece will be immersed in mercury by half
C. whole of the metal piece will be immersed with its top surface just at mercury level
D. metal piece will sink to the bottom
E. none of the above
A. MlL°T2
B. MlL°Tx
C. MlL r2
D. MlL2T2
E. MlL°t
A. One pipe
B. Two pipes
C. Three pipes
D. Four pipes