Correct option is D
✅Correct Element–Symptom Mapping:
a. Zn (Zinc) → IV. Khaira Disease
Found in paddy (rice) due to Zn deficiency
Symptoms: Bronzing of leaves, stunted growth.
b. Fe (Iron) → III. Interveinal chlorosis
Common in alkaline soils where Fe becomes unavailable
Yellowing occurs between veins, especially in young leaves.
c. Mn (Manganese) → I. Pahala blight of sugarcane
Caused by Mn deficiency, especially in acidic soils.
d. K (Potassium) → II. Hidden Hunger
Symptoms not always visibly obvious (hence “hidden”)
Leads to poor yield despite healthy appearance.
✔️ Correct matching: a-IV, b-III, c-I, d-II → Option (d)