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Agricultural Science 2013 WAEC Past Questions

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6
Which of the following factors affects the onset of flowering in crops?
  • A. Atmospheric pressure
  • B. Wind
  • C. Day length
  • D. Rainfall
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7
Marble is a metamorphic rock formed from
  • A. limestone
  • B. quartzite
  • C. shale
  • D. schist
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8
Which of the following statements best describes sediment rocks?
  • A. pre-existing rocks in which the original mineral has undergone change
  • B. weathered rock transported by wind to other places
  • C. molten magma which has cooled down and solified
  • D. rocks formed from breaking deposition and re-cementation of pre-existing rocks
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9
The rock weathering process involving the equation; CaCO3 + H2CO3 → Ca(HCO3)2 is called
  • A. carbonation
  • B. hydration
  • C. hydrolysis
  • D. oxidation
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10
When compost is added to said, it
  • A. reduces the activities of living organisms
  • B. increases the porosity of the soil
  • C. increases water-holding capacity of the soil
  • D. decreases the soil acidity
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