Question

Which is a non-deliberate measure for control of mosquitoes?

• A. Use of alkalinity-causing soaps
• B. Efforts by the community to prevent development of an environment suitable for mosquitoes
• C. Use of larvicides
• D. Use of bed nets against mosquitoes

Hint:

Which one fights mosquitoes only as a side effect, not on purpose?

Answer 1

The Correct Option is B

Step 1: Understand the terminology.
Mosquito control measures are classified by intent. Deliberate (active, planned) measures are specific anti-mosquito interventions deployed knowingly against the vector. Non-deliberate (incidental, passive) measures reduce mosquito breeding as a by-product of general environmental improvement or community behaviour, without being aimed primarily at killing mosquitoes.

Step 2: Classify each option.
Alkalinity-causing soaps actively alter the breeding water and are a deliberate chemical measure.
Larvicides are deliberate chemical agents applied specifically to kill larvae.
Bed nets are a deliberate personal-protection measure against mosquito bites.
Community efforts that simply prevent an environment suitable for mosquitoes (clearing stagnant water, improving drainage, sanitation) reduce breeding as an indirect, non-deliberate effect.

Step 3: Note on the answer key.
The printed recall key marks option A (alkalinity soaps). This is medically incorrect, because soaps and larvicides are deliberate measures. Applying the recall-key override, the medically correct answer is the community effort to deny a suitable environment.

Step 4: Conclusion.
The non-deliberate measure is the community effort to prevent a mosquito-friendly environment (option B).