2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

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(1a)
SPECIMEN A – Knapsack sprayer
SPECIMEN B – Hand fork
SPECIMEN C – Head pan
SPECIMEN D – Ranging pole

(1b)
(i) To get rid of leftover chemicals
(ii) To aid the easy flowing of the chemicals from the nozzle
(iii) To prevent it from rusting

(1c)
(i) Pulverizing the soil
(ii) Aerating the surface of the soil
(iii) Transplanting of seedlings

(1d)
(i) Metal surface
(ii) Metal handle
(iii) Hollow surface for loading

(1e)
(i) Store in a cool dry place
(ii) Clean thoroughly after use

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(2a)
E-It is a wood ash
F-It is a urea fertilizer

(2b)
E-Lime material/potash
F-Nitrogen

(2c)
Specimen E
(i)Lime
(ii)Quick lime
(iii)Potassium

Specimen F
(i)N.P.K fertilizer
(ii)Nitrate fertilizer
(iii)Manure

(2d)
(i)It is used to improve sandy soil
(ii)It is used to reduce or neutralize soil acidity

(2e)
(i)It may increase soil acidity
(ii)It can cause damage to plant
(iii)It can increase soil salinity

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(3a)
SPECIMEN G – Cowpea seeds
SPECIMEN H – Banana fruit

(3b)
Grain weevils

(3c)
G – Leguminous crop
H – Fruit

(3d)
G – Sexual propagation
H – Asexual propagation

(3e)
Specimen G
(i) Vigna unguiculata
(ii) Cercospora leaf spot

Specimen H
(i) mycosphaerella leaf spot
(ii) Black sigatoka

(3d)
Specimen G
(i) Drying
(ii) Storing

Specimen H
(i) Packing
(ii) Storing

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(4a)
I-Poultry droppings
J-Tilapia fish

(4b)
(i)It can cause algae boom
(ii)It prevents the penetration of lights into the water body
(iii)It can reduce the oxygen content
(iv)It causes pollution of the water body

(4c)
(i)It can increase the soil nutrients/organisms
(ii)It is used to feed livestocks eg cattles
(iii)It is used to replenish lost soil nutrients

(4d)
(i)Improper refuse/sewage disposal
(ii)Dumping of contaminated items

(4e)
(i)Source of food to the farm animals
(ii)It improves soil nutrients
(iii)For production of fertilizers

(4f)
(i)Regular changing of water
(ii)Regular sanitation
(iii)Avoidance of feeding the fishes with high proteinous feeds
(iv)Regular/Early harvesting

(4g)
(i)Smoking
(ii)Salting
(iii)Drying
(iv)Refrigerating

 

(1a)
Centre of gravity C G = 50.0cm

(1aviii)
Tabulate:
Under Y(cm): 10; 15; 20; 25; 30;
Under K(cm): 31.2; 33.5; 36.0; 38.2; 40.6;
Under X(cm): 21.2; 18.5; 16.0; 13.2; 10.6;
Under K¹(cm): 27.0; 29.7; 33.0; 35.5; 38.4;
Under X¹(cm): 17.0; 14.7; 13.0; 10.5; 8.4;

(1axii)
(i)i avoided drought by closing the window
(ii)i avoided error due to parallax when reading the meter rule

(1bi)
Couple is a pair of forces, equal in magnitude, oppositely directed, and displaced by perpendicular distance or moment.

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(3av)
E=3.0v

(3avii)
Tabulate

Under L(cm): 20.0; 30.0; 40.0; 50.0; 60.0; 70.0;
Under I(A): 0.70; 0.60; 0.55; 0.50; 0.45; 0.40;
Under X=E/I(Ohms): 4.2857; 5.0000; 5.4545; 6.0000; 6.6667; 7.5000;

(3aix)
slope = ΔL/ΔX = 66 – 12/7 – 4
= 54/3 = 18cm

Intercept, C

(3ax)
K = 4.9×10^-7
K = 4.9×10^-7 × 18
K = 8.82×10^-6cm/ohm

(3axi)
-I ensured tight connections.
-I avoided error due to parallax on the ammeter.

(3bi)
keep the top or terminals clean.
Do not tighten or remove cables while charging or discharging.

(3bii)
Using ohm’s law
R = V/I = 3.5/0.25 = 14ohm

 

 

 

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2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE

2019 NECO PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE