A drop manhole is provided if__________________?

Related Mcqs:

1. A manhole is generally provided at each__________________?

   A. Bend B. Junction C. Change of gradient D. All the above...

2. Lead acetate test in sewer manhole is done to test the presence of ____________________?

   A. Methane gas B. Hydrogen sulphide C. Carbondioxide gas D. Diesel vapours...

3. If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains__________________?

   A. Hydrogen sulphide B. Carbon dioxide C. Methane D. Oxygen...

4. A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of______________?

   A. Carbondioxide gas B. Hydrogen sulphide gas C. Methane gas D. Petrol vapours...

5. A manhole is classified as shallow if its depth is between_________________?

   A. 0.4 to 0.5 m B. 0.5 to 0.7 m C. 0.7 to 0.9 m D. 0.9 to 1.20 m...

6. If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains_______________?

   A. Hydrogen sulphide B. Carbon dioxide C. Methane D. Oxygen...

7. The drop man holes are generally provided in sewers for____________________?

   A. Industrial areas B. Large town ships C. Hilly town ships D. Cities in plains...

8. Drop manholes at the junctions of sewer lines, are provided if________________?

   A. Invert level of a branch sewer is more than 60 cm that of the main sewer B. Sewer line runs along a main road C. Ordinary manhole cannot be built D. Two sewer lines intersect...

9. Drop manholes are the manholes___________________?

   A. Without entry ladders B. Without manhole covers C. With depths more than 3.5 m D. Having drains at different levels...

10. The difference of pressure between the inside and outside of a liquid drop is________________?

    A.p = Txr B.p = T/r C. p = T/2r D. p = 2T/r E. none of the above...