Atmosphere MCQ Question and Answer | Geography MCQ Question

Water vapour beyond the dew point results in condensation. The dew point is the temperature at which air is saturated with water vapor, which is the gaseous state of water. The relative humidity is 100° when the dew point and the temperature are the same. If the temperature drops any further, condensation will result, and liquid water will begin to form.

The most common form of high-level clouds are thin and often wispy cirrus clouds. Typically found at heights greater than 20,000 feet (6,000 meters), cirrus clouds are composed of ice crystals that originate from the freezing of supercooled water droplets.

All the weather activities (meteorological) occur in tropospheric belt of atmosphere. It extends till the altitude of 16 km from Earth crust. (0 to 8) km near poles & (0 to 16) km near equator.

Cumulonimbus, Stratus, Cirrostratus, Cirrus is the correct sequence of the given clouds from low to high altitudes.

The portion of the atmosphere which extends from the earth's surface up to 6-8 miles and experiences decrease in temperature at a constant rate is the Troposphere.

The statements that are correct with reference to tornadoes are that Tornadoes are smaller and more intense than hurricanes, The average tornado lasts for less than one hour and Tornadoes are most common in the afternoons in the early summer.

The January isotherm taken as a basis for dividing India into tropical and subtropical zones is 15°C.

As the lowest layer of atmosphere comprises of even the heaviest of the gases which can't rise above a marginal level due to their mass, the air density at this level remains maximum. This layer is known as Troposphere.

Cloud Burst occurs only in hilly areas. They are called cloudbursts because we earlier believed that clouds were a solid mass of water that burst over an area. Cloudbursts occur because the warm air current from the ground or below the clouds rushes up and carries the falling raindrops up with it.

Just before sunrise one can record the lowest temperature of air. The longer the night is, the more intense this effect is, so that's one reason the temperature will drop right before sunrise (as the night goes on).