Fertilizers — Homi Bhabha Exam Chemistry MCQs with Solutions
Free Homi Bhabha Exam Chemistry Fertilizers MCQs with step-by-step solutions (5 questions). Part of Substances in Daily Use & Applied Chemistry. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Fertilizers · medium · theory
The three main nutrients supplied by fertilizers to plants are:
A. carbon, oxygen and hydrogen
B. silicon, sulphur and lead
C. sodium, chlorine and iron
D. nitrogen, phosphorus and potassium ✓ Correct
Solution: N, P and K (the NPK nutrients) are the primary plant nutrients supplied by fertilizers.
Q2 — Fertilizers · medium · theory
Urea is a widely used ______ fertilizer:
A. nitrogenous ✓ Correct
B. micronutrient
C. phosphatic
D. potassic
Solution: Urea supplies nitrogen, so it is a nitrogenous fertilizer.
Q3 — Fertilizers · hard · theory
Excessive use of chemical fertilizers can pollute water bodies and cause:
A. purer water
B. less algae
C. no effect
D. eutrophication (excess algal growth) ✓ Correct
Solution: Fertilizer run-off enriches water with nutrients, causing algal blooms (eutrophication) that harm aquatic life.
Q4 — Fertilizers · medium · theory
Compared with chemical fertilizers, manure is better for the soil because it:
A. adds humus and improves soil structure ✓ Correct
B. makes the soil hard
C. removes all nutrients
D. adds only nitrogen
Solution: Manure enriches the soil with organic matter (humus), improving its texture and fertility.
Q5 — Fertilizers · hard · theory
Fertilizers differ from manure in that fertilizers are:
A. always organic
B. free of nutrients
C. made from decomposed plant/animal waste
D. manufactured chemicals rich in specific nutrients ✓ Correct
Solution: Fertilizers are industrially produced and nutrient-specific, unlike organic manure.