Question

The most suitable fumigants for quarantine purposes is-

• A. Malathion
• B. Methyl Bromide
• C. Ethylene
• D. Sulphur

Hint:

Quarantine fumigation → Methyl Bromide is standard; Malathion is insecticide, Ethylene is ripener, Sulphur for storage.

Answer 1

The Correct Option is B

Step 1: Concept of fumigation.
Fumigation is the process of using gaseous chemicals (fumigants) to kill pests, pathogens, and insects in stored products or during quarantine.
Step 2: Quarantine fumigants.
Methyl Bromide has been widely used as a standard fumigant for quarantine treatment due to its effectiveness against a wide range of insects and pests.
It penetrates deeply and kills all stages of insects, including eggs, larvae, and adults.
Step 3: Checking options.
- (1) Malathion: An insecticide, not mainly used as a quarantine fumigant.
- (2) Methyl Bromide: Correct, the most effective quarantine fumigant.
- (3) Ethylene: Used in fruit ripening, not fumigation.
- (4) Sulphur: Acts as a fumigant in storage, but not widely used for quarantine.
Step 4: Conclusion.
Thus, the most suitable fumigant for quarantine purposes is Methyl Bromide.