Question

At a given place the barometric height falls suddenly and air is dry. The weather forecast can be

• A. dust storm
• B. rain storm
• C. gentle breeze
• D. mild drizzle

Answer 1

The correct option is A

dust storm

Explanation of correct option:

option a)

1. If the pressure of air falls gradually over a number of days, but there is less water vapour in the air then the weather of that place will change from calm to windy.
2. It may result a dust storm.
3. If air has a lot of water vapour, it will result in rain with strong winds.
4. If the pressure at a place falls suddenly, it could result in dust storm or rain storm, depending on how much water vapour is in the air.
5. If air is dry, it will result a dust storm.

Explanation of incorrect option:

option b)

1. If the pressure at a place falls suddenly, it could result in dust storm or rain storm, depending on how much water vapour is in the air.
2. If air contains water vapour, it will result a rain storm.

option c)

1. If air contains water vapour, it will result a calm wind.
2. These winds are pleasant and therefore termed as gentle breeze.

option d)

1. Drizzle occurs mostly in hilly areas.
2. In hilly areas the atmospheric pressure is low due to higher altitudes.
3. Low atmospheric pressure produces lower air density means it will contain a lot of water vapour which makes drizzle.

Thus, option a) dust storm is the correct option.