Plant Physiology - Section 3 | Multiple Questions and Answers

6.	In tanking construction the cement mortar fill Is used to:

	A.	increase the wall strength
	B.	prevent water penetration
	C.	strengthen the protective wall
	D.	protect the vertical asphalt

7.	The type of aggregate used for the manufacture of lightweight concrete blocks is:

	A.	crushed sandstone
	B.	pulverised fuel ash
	C.	granite chippings
	D.	broken old bricks

8.	Hatching is a method which is used to indicate:

	A.	materials
	B.	volume
	C.	density
	D.	dimensions

9.	To prevent the occurrence of dry rot below hollow timber ground floors, it is necessary to:

	A.	ensure all d.p.c.s are correctly placed
	B.	use only well-seasoned timber
	C.	put a damp-proof membrane below the oversite concrete
	D.	ensure a through draught of fresh air