Study specimens P ( Electric bulb) , Q (Garden fork), R (Hand trowel ) and S (knapsack sprayer) carefully and answer the following questions. (a) State two ...

Answer Details

(a) Two uses each of specimens P, Q and R

P (Electric bulb):

• Provides light/illumination in poultry and animal houses.
• Provides warmth for brooding chicks and in incubators.

Q (Garden fork):

• Loosening, turning and aerating the soil.
• Lifting and harvesting root/tuber crops and turning compost/manure.

R (Hand trowel):

• Transplanting and lifting seedlings.
• Digging small holes for planting and mixing/applying soil or manure in the nursery.

(b) Three problems from a poorly maintained specimen S (Knapsack sprayer)

1. Blockage of the nozzle, giving uneven or incomplete spraying.
2. Leakage of chemicals onto the operator, causing a health hazard.
3. Loss of pressure leading to poor atomization and ineffective/inaccurate application.

(c) Three protective devices to be worn when using specimen S

• Nose mask/respirator.
• Hand gloves.
• Overall (protective clothing) and rubber boots or goggles.

(d) Three precautions when using specimen S

1. Spray along the direction of the wind, never against it.
2. Do not eat, drink or smoke while spraying, and wash the body and equipment thoroughly after use.
3. Check for and repair leakages, and never clear a blocked nozzle by blowing with the mouth.