JAMB Geography Past Questions 1990
10 questions from the JAMB 1990 Geography paper, with answers and explanations. Tap "Show answer" under each one when you are ready.
JAMB 1990Question 1 · Agriculture and Vegetation
Vegetation regeneration on a fallow land is typical example of?
- A.nature conservation
- B.secondary succession
- C.reafforestation
- D.forest reservation
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Answer: B. secondary succession
Fallow vegetation regrows after farming disturbance while soil and propagules remain so it is secondary succession.
JAMB 1990Question 2 · General Past Questions
The latitude which marks the lines of the sun's apparent movement north and south of the equator is?
- A.66 1/2∘
- B.60 1/2∘
- C.45 1/2∘
- D.23 1/2∘
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Answer: D. 23 1/2∘
The overhead sun migrates between the Tropics at 23.5∘ north and south.
JAMB 1990Question 3 · General Past Questions
Chemical weathering is both rapid and intense in the humid tropics because of?
- A.low annual range of temperature
- B.high rainfall and temperature
- C.the presence of easily weathered rocks
- D.a large volumes of run-off
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Answer: B. high rainfall and temperature
Abundant moisture and high temperatures accelerate chemical reactions throughout the year.
JAMB 1990Question 4 · General Past Questions
In tropical highlands, density rainforest occur at altitudes ranging from 1200m to 2400m above sea level. This is due to the influence of?
- A.abundant water supply from snow melt
- B.high humidity and cool air
- C.orographic rainfall
- D.fertile soils
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Answer: C. orographic rainfall
Forced uplift of moist air over highlands produces the rainfall that supports dense montane forest.
JAMB 1990Question 5 · General Past Questions
World population distribution is characterized by?
- A.concentration in the western hemispheres
- B.extreme unevenness
- C.balanced distribution between the northern and southern hemisphere
- D.uniform density in all hemispheres
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Answer: B. extreme unevenness
People are strongly concentrated in a few favourable regions so global distribution is extremely uneven.
JAMB 1990Question 6 · General Past Questions
Commercial grain farming is practiced mainly in the?
- A.steppes and prairie lands of the middle latitudes
- B.savannah and grasslands of the low latitudes
- C.tundra and grassland of the high latitudes
- D.montane and grasslands of the high altitudes
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Answer: A. steppes and prairie lands of the middle latitudes
Large mechanized grain farms are characteristic of temperate grasslands such as the prairies and steppes.
JAMB 1990Question 7 · General Past Questions
The problems of irregular levels of water in river navigation may be solved by?
- A.straightening river courses
- B.controlling the currents
- C.providing dams, canals and locks
- D.changing the diretion of river flow
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Answer: C. providing dams, canals and locks
Dams regulate discharge while canals and locks bypass or overcome changing levels and obstacles.
JAMB 1990Question 8 · General Past Questions
The main reason for importing crude for the Kaduna refinery is to produce?
- A.kerosene
- B.gas
- C.lubricants
- D.insecticides
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Answer: C. lubricants
Imported heavy crude provides the feedstock needed for lubricant production at Kaduna.
JAMB 1990Question 9 · General Past Questions
There are few natural harbors on the African coastline because the?
- A.continent is a shield
- B.coastline is regular
- C.continent shelf of Africa is narrow
- D.coasts are rocky
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Answer: B. coastline is regular
Africa has a comparatively smooth regular coastline with few deep indentations for natural harbours.
JAMB 1990Question 10 · General Past Questions
The shaba Province in Zaire is noted for producing copper and?
- A.silver
- B.lead
- C.gold
- D.uranium
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Answer: D. uranium
Shaba or Katanga is a major copper belt and is also historically associated with uranium deposits.
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