Question

Match List-I with List-II

List-I (Book/Theory proposed/Characteristic, etc.)	List-II (Author/Thinker/Name of Theory, etc.)
(A) Khaira disease	(I) Molybdenum
(B) Whiptail symptom	(II) Zinc
(C) Hollow-heart in groundnut	(III) Manganese
(D) Grey speck in cereals	(IV) Boron

Choose the correct answer from the options given below:

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (I), (C) - (IV), (D) - (II)
• (A) - (IV), (B) - (III), (C) - (II), (D) - (I)

Hint:

Khaira disease points to zinc, and whiptail symptom points to molybdenum; match the other two the same way.

Answer 1

The Correct Option is B

Each row in List-I names a field symptom of a nutrient shortage, and List-II gives the micronutrient responsible. We match them one at a time using the known cause of each disorder.

1. (A) Khaira disease: A zinc deficiency disorder of rice showing rusty brown spots on leaves. Matches (II) Zinc.
2. (B) Whiptail symptom: Seen in cauliflower when leaves fail to expand and turn thin and whip shaped because molybdenum is short in the soil. Matches (I) Molybdenum.
3. (C) Hollow-heart in groundnut: A pod and kernel disorder where the centre of the seed turns hollow or dark, caused by low boron. Matches (IV) Boron.
4. (D) Grey speck in cereals: A leaf streaking disorder of oats and other cereals caused by manganese deficiency. Matches (III) Manganese.

Combining the four pairs gives (A)-(II), (B)-(I), (C)-(IV), (D)-(III).

Let's summarize:

• Khaira disease means zinc shortage, and whiptail symptom means molybdenum shortage.
• Hollow heart in groundnut points to boron shortage, and grey speck in cereals points to manganese shortage.

So the matching in option 2 is correct.