Mock Test 5: Full DGCA Meteorology (50 MCQs)

78%

Correct Incorrect Correct answer

21%

Correct Incorrect Correct answer

0.93%

Correct Incorrect Correct answer

4%

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(T – Td) × 200

Correct Incorrect Correct answer

(T – Td) × 400

Correct Incorrect Correct answer

(T – Td) × 600

Correct Incorrect Correct answer

(T + Td) × 400

Correct Incorrect Correct answer

QFE and QNH

Correct Incorrect Correct answer

QNH (below) and standard pressure 1013.25 hPa (above)

Correct Incorrect Correct answer

QNE and QFE

Correct Incorrect Correct answer

Standard pressure (below) and QNH (above)

Correct Incorrect Correct answer

Snow

Correct Incorrect Correct answer

Hail

Correct Incorrect Correct answer

Warm rain — large drops colliding and merging in clouds above 0°C

Correct Incorrect Correct answer

Freezing drizzle

Correct Incorrect Correct answer

Anticlockwise

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Clockwise

Correct Incorrect Correct answer

Randomly depending on latitude

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Clockwise only near the equator

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Always forms over the sea

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Can form with moderate winds (up to 15 kt) and persists without calm conditions

Correct Incorrect Correct answer

Only forms at night

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Requires a clear sky to form

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The cloud top first reaches the freezing level

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Precipitation begins and the first downdrafts develop, marking the start of the mature stage

Correct Incorrect Correct answer

Lightning is first observed

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The anvil spreads at the tropopause

Correct Incorrect Correct answer

Cumulonimbus at temperatures near 0°C — large drop impact

Correct Incorrect Correct answer

Stratiform cloud at temperatures between -10°C and -20°C — small drops freeze rapidly

Correct Incorrect Correct answer

Freezing rain situations below a warm frontal surface

Correct Incorrect Correct answer

Mixed cloud with both supercooled water and ice crystals

Correct Incorrect Correct answer

Extensive radiation fog in the morning

Correct Incorrect Correct answer

Embedded cumulonimbus within deep stratiform cloud layers

Correct Incorrect Correct answer

Severe carburettor icing at low altitude

Correct Incorrect Correct answer

CAT above FL350 from the STJ

Correct Incorrect Correct answer

A warm front overtakes a cold front

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A cold front catches and overtakes the warm front, lifting the warm air entirely off the surface

Correct Incorrect Correct answer

Two cold fronts merge into a stationary front

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A tropical cyclone dissipates over land

Correct Incorrect Correct answer

Pilot in command (as a PIREP)

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Aerodrome meteorological office for local conditions

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ICAO Meteorological Watch Office (MWO)

Correct Incorrect Correct answer

Air Traffic Control based on radar observation

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Pressure rises sharply

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Pressure falls steadily ahead, then stabilises after frontal passage

Correct Incorrect Correct answer

Pressure remains constant

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Pressure oscillates rapidly

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The summer monsoon season

Correct Incorrect Correct answer

The post-monsoon (October-November)

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Winter (November-March)

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The pre-monsoon season (March-May)

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Airborne weather radar (WXR) — precipitation returns

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Lenticular clouds if visible — otherwise no warning; PIREPs are essential

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Lightning detector

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TAWS terrain warning system

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Thunderstorm occurring at the time of observation but without precipitation at the station

Correct Incorrect Correct answer

Trace of snow

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Turbulence report from the surface station

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Temperature and dewpoint suppressed

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-45°C

Correct Incorrect Correct answer

-56.5°C

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-35°C

Correct Incorrect Correct answer

-65°C

Correct Incorrect Correct answer

Subsidence and warming

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A lifting mechanism to bring air to its Level of Free Convection (LFC)

Correct Incorrect Correct answer

Cooling from the stratosphere above

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Strong geostrophic wind

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Issuing METARs for all Indian airports

Correct Incorrect Correct answer

Monitoring and forecasting Bay of Bengal and Arabian Sea tropical cyclones

Correct Incorrect Correct answer

Issuing en-route SIGMETs for turbulence

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Publishing Indian upper wind charts

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Routine PIREP (UA)

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Urgent PIREP (UUA)

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AIRMET

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SIGMET (filed by the pilot)

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Water vapour is heavier than nitrogen and oxygen

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Water vapour (molecular weight 18) is lighter than N₂ (28) and O₂ (32)

Correct Incorrect Correct answer

Water vapour increases pressure

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Humid air has lower temperature

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A lenticular cloud formed at the wave crest

Correct Incorrect Correct answer

The cumulonimbus that develops from orographic lifting

Correct Incorrect Correct answer

A cap cloud or wave cloud on the windward slope where moist air is rising

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The rotor cloud on the lee side

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Rajasthan — hot desert

Correct Incorrect Correct answer

Kerala — coastal southwest India

Correct Incorrect Correct answer

West Bengal and northeast India (Kal Baisakhi/Nor'westers)

Correct Incorrect Correct answer

The Andaman and Nicobar Islands

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It produces the largest hailstones

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The CB is concealed within stratiform cloud — no visual warning; WXR essential

Correct Incorrect Correct answer

It only occurs at night when pilots cannot see

Correct Incorrect Correct answer

It produces more lightning than isolated CB

Correct Incorrect Correct answer

0°C

Correct Incorrect Correct answer

−273.15°C (0 K)

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−56.5°C

Correct Incorrect Correct answer

−100°C

Correct Incorrect Correct answer

Stratus

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Stratocumulus

Correct Incorrect Correct answer

Altostratus

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Nimbostratus

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Isobars closely spaced at 300 hPa

Correct Incorrect Correct answer

An arrow showing position with FL and maximum speed (e.g., FL370/140KT)

Correct Incorrect Correct answer

Red shading indicating warm temperatures

Correct Incorrect Correct answer

Dotted lines indicating convergence zones

Correct Incorrect Correct answer

Downslope at night as cold dense air drains

Correct Incorrect Correct answer

Upslope during the day as solar heating warms mountain slopes

Correct Incorrect Correct answer

From sea to land in the afternoon

Correct Incorrect Correct answer

From land to sea at night

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Read lower than actual altitude — fly into ground

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Read higher than actual altitude — fly higher than indicated (generally safe)

Correct Incorrect Correct answer

Read correctly — temperature has no effect

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Freeze at the transition altitude reading

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30% probability of the condition occurring — too low for planning purposes in most situations

Correct Incorrect Correct answer

Permanent condition expected for 30% of the forecast period

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30-minute duration of the condition

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A probable 30-kt wind change

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850 hPa

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700 hPa

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500 hPa

Correct Incorrect Correct answer

300 hPa

Correct Incorrect Correct answer

The cold front to the west and the warm front to the east

Correct Incorrect Correct answer

The warm front ahead and the cold front behind (to the west)

Correct Incorrect Correct answer

Two cold fronts converging

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The occluded front and a stationary front

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Radar precipitation returns on WXR

Correct Incorrect Correct answer

Lenticular clouds visible (if moisture is present) or unexpected pitch/roll oscillations

Correct Incorrect Correct answer

TAWS terrain alerts

Correct Incorrect Correct answer

ACAS/TCAS advisories

Correct Incorrect Correct answer

Severe thunderstorms and embedded CB

Correct Incorrect Correct answer

Dense fog (radiation fog and smog) in the Indo-Gangetic Plain — visibility below 50 m common

Correct Incorrect Correct answer

Tropical cyclone approach from Bay of Bengal

Correct Incorrect Correct answer

Severe icing from warm frontal cloud

Correct Incorrect Correct answer

FL050

Correct Incorrect Correct answer

FL100

Correct Incorrect Correct answer

FL180

Correct Incorrect Correct answer

FL250

Correct Incorrect Correct answer

This indicates no carb ice was present — the heat reduced air density

Correct Incorrect Correct answer

This confirms carb ice was present — the momentary drop is ice melting causing a mixture change

Correct Incorrect Correct answer

The heat system is malfunctioning

Correct Incorrect Correct answer

The engine will shortly fail

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Cold, dry, very stable

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Hot, dry, very unstable

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Warm, moist, conditionally unstable

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Cold, moist, unstable when heated from below

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Record it for statistical purposes only

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Enable ATC to issue LLWS warnings to following aircraft and initiate a PIREP

Correct Incorrect Correct answer

Cancel all subsequent approaches

Correct Incorrect Correct answer

Request a SIGMET to be issued

Correct Incorrect Correct answer

Tropical cyclone eyewall rotation

Correct Incorrect Correct answer

Thunderstorm hail growth

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Clear Air Turbulence (CAT) at wind shear layers — visible as billow clouds when moisture is present

Correct Incorrect Correct answer

Sea breeze front convection

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Weak pressure gradient and light winds

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Strong pressure gradient and strong winds

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Frontal zone but no precipitation

Correct Incorrect Correct answer

Anticyclonic conditions

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Enhanced southwest monsoon rainfall

Correct Incorrect Correct answer

Suppressed southwest monsoon — drought conditions

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Enhanced northeast monsoon in Tamil Nadu

Correct Incorrect Correct answer

No effect on Indian weather

Correct Incorrect Correct answer

Increase approach speed to Va for turbulence penetration

Correct Incorrect Correct answer

Fly early morning when thermal convection is minimal and waves are weaker; never attempt in strong cross-ridge winds

Correct Incorrect Correct answer

Use flap 10 throughout the approach

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Ignore wave warnings if the weather is VMC

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Below 2,000 m (low clouds)

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2,000-7,000 m (middle clouds: As, Ac)

Correct Incorrect Correct answer

Above 7,000 m (high clouds: Ci, Cs, Cc)

Correct Incorrect Correct answer

Any level including vertical development

Correct Incorrect Correct answer

Cold front passage

Correct Incorrect Correct answer

Strong surface heating creating superadiabatic conditions — intense but small vortices

Correct Incorrect Correct answer

Tropical cyclone outer bands

Correct Incorrect Correct answer

Radiation fog dissipation

Correct Incorrect Correct answer

Ozone absorbing all solar UV

Correct Incorrect Correct answer

Water vapour and CO₂ absorbing outgoing long-wave (IR) radiation from the Earth's surface

Correct Incorrect Correct answer

N₂ and O₂ trapping solar radiation

Correct Incorrect Correct answer

The stratosphere reflecting solar energy back to space

Correct Incorrect Correct answer

Standard pressure 1013.25 hPa

Correct Incorrect Correct answer

QFE of the nearest aerodrome

Correct Incorrect Correct answer

QNH

Correct Incorrect Correct answer

Regional Pressure Setting (RPS) for the applicable QNH zone

Correct Incorrect Correct answer

On the warm side of an occluded front

Correct Incorrect Correct answer

50-300 km ahead of a cold front along a line of low-level convergence

Correct Incorrect Correct answer

Behind a retreating warm front

Correct Incorrect Correct answer

Along the monsoon trough at the ITCZ

Correct Incorrect Correct answer

0°C

Correct Incorrect Correct answer

10°C

Correct Incorrect Correct answer

15°C

Correct Incorrect Correct answer

20°C

Correct Incorrect Correct answer

Cloud below 1,500 ft or within 5,000 ft if significant

Correct Incorrect Correct answer

No cloud below 5,000 ft or below MSA; visibility 10 km or more; no significant weather

Correct Incorrect Correct answer

Visibility 5 km minimum; some cloud permissible

Correct Incorrect Correct answer

CAVOK applies only above FL100

Correct Incorrect Correct answer

Anticyclonic descending air and clear skies

Correct Incorrect Correct answer

A line of convergence producing cloud, showers, or thunderstorms

Correct Incorrect Correct answer

The warm sector of a depression

Correct Incorrect Correct answer

The 1013.25 hPa isobar

Correct Incorrect Correct answer

Altitude (pressure decreases)

Correct Incorrect Correct answer

Increasing temperature

Correct Incorrect Correct answer

Decreasing temperature

Correct Incorrect Correct answer

Increasing density

Correct Incorrect Correct answer

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