Question

Q. Consider the following statements

Which of the statements given above is/are incorrect?

• A.
  1 only
• B.
  2 and 3 only
• C.
  2 only
• D.
  1 and 3 only

Answer 1

The correct option is A

1 only
Explanation:

Statement 1 is incorrect: Thunderstorms are caused by intense convection on moist hot days. A thunderstorm is a well-grown cumulonimbus cloud producing thunder and lightning. When the clouds extend to heights where sub-zero temperature prevails, hails are formed and they come down as a hailstorm.

Statement 2 is correct: If there is insufficient moisture, a thunderstorm can generate dust- storms. A thunderstorm is characterised by intense updraft of rising warm air, which causes the clouds to grow bigger and rise to greater height. This causes precipitation. Later, downdraft brings down to earth the cool air and the rain.

Statement 3 is correct: A tornado is a narrow, violently rotating column of air that extends from a thunderstorm to the ground. They are most common on continents in the mid-latitudes where they are frequently associated with thunderstorms.