1. 1. (a)What is drain test.
(b) Why it is important to ensure that
drains are well ventilated.
2. 2. (a)What do you understand by the word
self-cleansing velocity into drainage system.
(b)Explain the word cleansing velocity into
drainage system.
3. 3. Usually water mains are under control with authority ,Briefly explain three types of water mains.
4. 4. (a)What is rain water harvesting.
(b)Describe the problems associated with using plastic rain water goods in hot regions like Dodoma.
5. (a) What is the difference between neutral
flame, Oxidizing flame and Carbonizing flame in gas welding.
(b)What is color for:-
(i)Oxygen cylinder and oxygen hose.
(ii)Acetylene cylinder and acetylene hose.
6. 6. Explain the properties of metal.
7. 7. Briefly explain Main procedure of providing
First Aid.