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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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1736
Thunderstorm can be beneficial to plants because it
  • A. kills the pest that attacks crops
  • B. destroys some of the major crops
  • C. adds nitrates to the soil
  • D. adds lime to the soil
  • E. makes rain water available to plants
View Answer & Discuss WAEC 1990
1737
Which of the following is a nitrifying bacterium
  • A. Nitrobacter
  • B. Rhizobium
  • C. Azotobacter
  • D. Clostribium
  • E. Nitrosomonas
View Answer & Discuss (2) WAEC 1990
1738
Which of the following reagents is used for the test for starch?
  • A. Million’s reagent
  • B. Fehling’s’ solution
  • C. Sudan III
  • D. Iodine solution
  • E. Benedict’s solution
View Answer & Discuss (1) WAEC 1990
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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1739
Which of the following is an autotrophic mode of nutrition?
  • A. Chemosynthesis
  • B. Saprophytism
  • C. Parasitism
  • D. Symbiosis
  • E. Commensalism
View Answer & Discuss WAEC 1990
1740

Which of the following is not a way of reducing air pollution?

  • A. Siting factories and power stations away from residential areas
  • B. Building tall factory chimneys
  • C. Passing waste gases through filters and absorbers
  • D. Using lead-free petrol in cars
  • E. Recycling tins, cans and bottles
View Answer & Discuss (9) WAEC 1990
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts