KCPE Topical Questions

Soil conservation

1. Which one of the following groups of activities includes a practice which DOES NOT help to conserve soil?

A. Mulching, cover cropping, terracing, tree planting
B. Ridging, strip cropping, tree planting, contour farming
C. Cover cropping, mulching, bush clearing, terracing
D. Tree planting, growing grass, ridging, cover cropping

2. In the table below which waste is NOT correctly matched with an item that can be made from it?

3. The slowest way of recycling carbon in sawdust is by

A. Putting the sawdust in the cowshed
B. Putting the sawdust in the shamba
C. Using the sawdust in a jiko for cooking
D. Using the sawdust for making hardboards

4. Vegetation cover on land reduces soil erosion by

A. Slowing the movement of running water
B. Increasing soil fertility.
C. Minimizing rainfall intensity
D. Improving soil texture

5. Which one of the following materials DOES NOT pollute the environment?

A. Sawdust                      C. Broken pieces of glass
C. Plastic paper bags       D. Metal cans

6. Why is it necessary for farmers to leave strips of unploughed land between ploughed portions during seedbed preparation?

A. To keep crop remains after harvesting
B. To provide grass for grazing
C. To control insect pests
D. To control soil erosion

7. Which one of the following practices is the most effective way of conserving soil on steep slopes?

A. Terracing  B. Planting grass strips  C. Strip cropping    D. Ridging

8. Which one of the following crops is most suitable for use as a cover crop?

A. Beans    B. Sweet potatoes     C. Cabbages     D. Irish potatoes

9. The MAIN reason why Jua Kali artisans use scrap metal is that

A. They want to clean the environment
B. Raw materials are not readily available
C. Kenya has a lot of scrap metal
D. Products made from scrap metal are cheap

10. Construction of terraces is one method of controlling soil erosion. To which one of the following places should water from a terrace be discharged?

A. A vegetated area  B. A nearby river  C. A nearby road
D. An unproductive part of the farm

11. How do trees help to conserve soil?

A. Their roots hold soil particles together
B. Their leaves reduce the heat reaching the ground
C. Their leaves reduce the rate of evaporation
D. Trees stop the flow of surface water

12. Which one of the following structures of controlling soil erosion should be constructed at the upper end of a steep farm to divert surface run-off water to a grassed waterway?

A. A cut-off drain      B. A terrace    C. A gabion     D. A trash line