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1) The air mass which originates at sea in low Latitudes is called
a) Polar maritime
b) Tropical continental
c) Tropical maritime
Explanation: Polar maritime air masses originate over warm ocean waters in low latitudes, characterized by warm and moist conditions.
2) The air mass which originates over equatorial region is
a) Warm and dry
b) Warm and Moist
c) Cold and dry
Explanation: Air masses originating from the equatorial region are warm and moist due to high temperatures and abundant moisture from the ocean.
3) If the advancing cold front is colder than the cool air mass of the warm front, the advancing cold front undercuts and lifts both the warm and cool air masses of the warm front. This is
a) Warm Occlusion
b) Cold Occlusion
c) Not applicable
Explanation: This process is known as cold occlusion, where the colder air lifts the warm air, often resulting in precipitation.
4) The air mass which originated over land area located in polar region:
a) Warm and dry
b) Warm and Moist
c) Cold and dry
Explanation: The air mass originating over land in polar regions is cold and dry, often classified as continental polar (cP).
5) If a warm air mass overtakes a cold air mass, it is called
a) Cold Front
b) Warm Front
c) Occluded Front
Explanation: A warm front occurs when a warm air mass moves over a cold air mass, typically leading to gradual temperature increases and extended precipitation.
6) At warm front
a) Warm air overtakes the cold air
b) Cold air undercuts the warm air
Explanation: In a warm front, warm air rises over the cold air mass, causing gradual uplift and associated precipitation.
7) The conditions are always unstable at
a) Cold front
b) Warm front
Explanation: Cold fronts typically create unstable conditions due to the rapid lifting of warm air over cold air, often resulting in thunderstorms.
8) Line squall occurs about 100-300 km ahead of
a) Warm front
b) Cold front
Explanation: Line squalls often develop ahead of cold fronts as cold, moist air is forced upward, leading to organized areas of convection.
9) Precipitation occurs over a belt of 30 - 50 km on both sides of front
a) Cold front
b) Warm front
Explanation: cold fronts typically produce widespread, lighter precipitation over a broader area compared to warmer fronts.
10) Cold front moves at …... the speed of a warm front moves
a) Same
b) Double
c) Half
Explanation: Cold fronts typically move faster than warm fronts, often at double their speed, leading to rapid changes in weather.
11) Line Squalls occur ……… of Cold front
a) Ahead
b) Behind
c) At the
Explanation: Line squalls are commonly found ahead of cold fronts as the warm, moist air is lifted, resulting in thunderstorms.
12) Fronts are associated with
a) Tropical cyclone
b) Monsoon Depression
c) Extratropical Cyclones
Explanation: Fronts are primarily associated with extratropical cyclones, where the interaction of air masses occurs, leading to various weather patterns.
13) CB, Roll­type clouds, SC, AC with embedded CB are associated
a) Cold front
b) Warm front
Explanation: Cumulonimbus (CB) and associated cloud types are typically formed in the unstable conditions ahead of a cold front.
14) The Surface of discontinuity between the Polar Easterlies and the temperate Westerlies is called
a) Equatorial Front
b) Tropopause
c) Polar Front
Explanation: The polar front is the boundary where the cold polar easterlies meet the warmer temperate westerlies, often leading to significant weather changes.
15) The air mass which originates from sea area located in lower Lat is
a) Warm and Dry
b) Warm and Moist
c)
16) WDs approach India as
a) Cols
b) Occluded Fronts
c) Highs
Explanation: Western Disturbances (WDs) typically approach India as occluded fronts, bringing moisture and precipitation to the region.
17) Maximum WDs occur in
a) Summers
b) Post Monsoon
c) Winters
Explanation: The peak activity of Western Disturbances occurs in the winter season bringing winter rain and snow.
18) Ahead of a warm front the surface wind
a) Backs and weakens
b) Veers and strengthens
c) Backs and strengthens
Explanation: Ahead of a warm front, the surface winds typically veers (shift clockwise) and strrengthen as warm air approaches.
19) On approach of a Warm Front temperature
a) Fall
b) Rise
c) Remain same
Explanation: As a warm front approaches, temperatures typically rise as the warm air mass moves in.
20) CI, CS, AS, NS, ST in sequence are associated with the front
a) Warm
b) Cold
c) Occluded
Explanation: The cloud types listed (CI, CS, AS, NS, ST) are typically associated with the warm front sequence as warm, moist air rises over a cold front.
21) During the passage of a Cold Front winds
a) Suddenly become squally
b) Back and weaken
c) Veer and are of moderate strength
Explanation: Cold fronts often bring abrupt changes in weather, leading to squally conditions as the cold air mass moves in quickly.
22) Visibility is poor in a Warm Front
a) Ahead
b) Ahead and During
c) After and During
Explanation: Visibility tends to be reduced both ahead of and during the passage of a warm front due to cloud cover and precipitation.
23) Fog occurs in Cold Front
a) Ahead
b) During
c) After
Explanation: Fog may develop after the passage of a cold front as warm moist air is cooled rapidly.
24) WD is a……….. front
a) Cold
b) Warm
c) Occluded
Explanation: Western Disturbances are typically characterized as occluded fronts that bring moisture and precipitation into the Indian subcontinent.
25) FZRA and FZFG occur ……… of a warm front
a) Ahead
b) During
c) After
Explanation: Freezing rain (FZRA) and freezing fog (FZFG) can occur ahead of warm fronts when warm, moist air overrides cold air at the surface.
26) Precipitation ceases after the passage of a front
a) Cold
b) Warm
c) Occluded
Explanation: Precipitation typically stops after the passage of a warm front as the warm air mass stabilizes and dry conditions return.
27) During the approach of a Warm Front wind
a) Backs
b) Veers
c) Does not change
Explanation: Winds typically back (shift counterclockwise) in advance of a warm front due to the arrival of warmer air.
28) A WD has two or more closed isobars, at 2 hPa interval, it is termed as
a) Troughs in Westerlies
b) Western Depression
c) Western Cyclone
Explanation: A Western Depression is characterized by closed isobars indicating low pressure at intervals, representing a system in the westerly winds.
29) A WD originates over
a) Baluchistan
b) Caspian sea
c) Mediterranean, Caspian and Black Seas
Explanation: Western Disturbances typically originate over the Mediterranean, Caspian and Black Seas region and surrounding areas, moving toward the Indian subcontinent.
30) Induced lows develop to the …………. of a WD
a) N
b) S
c) NE
Explanation: Induced lows typically develop to the south of a Western Disturbance as the cold front advances and interacts with warmer air.

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