Mock Test 7: Full DGCA Meteorology (50 MCQs)

0.1 hPa

Correct Incorrect Correct answer

1 hPa

Correct Incorrect Correct answer

3 hPa

Correct Incorrect Correct answer

10 hPa

Correct Incorrect Correct answer

Saturated and rising

Correct Incorrect Correct answer

Unsaturated (dry) rising or descending — no condensation

Correct Incorrect Correct answer

At or below the dew point

Correct Incorrect Correct answer

Only in the stratosphere

Correct Incorrect Correct answer

QFE is corrected to the aerodrome elevation — lower pressure than at sea level

Correct Incorrect Correct answer

QNH is corrected to the aerodrome elevation

Correct Incorrect Correct answer

QFE is always 1013 hPa

Correct Incorrect Correct answer

QNH measures pressure in the stratosphere

Correct Incorrect Correct answer

Very dry air — fog is unlikely

Correct Incorrect Correct answer

Air is close to saturation — fog/low cloud is likely

Correct Incorrect Correct answer

Air has exactly 50% relative humidity

Correct Incorrect Correct answer

Aircraft performance is significantly impaired

Correct Incorrect Correct answer

Clockwise (e.g., W → NW → N)

Correct Incorrect Correct answer

Anticlockwise (e.g., W → SW → S)

Correct Incorrect Correct answer

An increase in wind speed

Correct Incorrect Correct answer

A decrease in wind speed

Correct Incorrect Correct answer

Advection fog

Correct Incorrect Correct answer

Steam fog

Correct Incorrect Correct answer

Radiation fog (requires land surface cooling)

Correct Incorrect Correct answer

Frontal fog

Correct Incorrect Correct answer

The flight will be delayed due to rerouting

Correct Incorrect Correct answer

Structural damage from turbulence, hail, icing, and lightning — potentially catastrophic

Correct Incorrect Correct answer

Minor passenger discomfort from turbulence

Correct Incorrect Correct answer

ATC separation standards may be violated

Correct Incorrect Correct answer

It only affects jet aircraft above FL300

Correct Incorrect Correct answer

Ice forms aft of the protected deicing boot zone — potentially uncontrollable

Correct Incorrect Correct answer

It creates only rime ice which is easy to remove

Correct Incorrect Correct answer

It only occurs in stratocumulus cloud

Correct Incorrect Correct answer

Polar air from tropical air

Correct Incorrect Correct answer

Northern Hemisphere NE trade winds from Southern Hemisphere SE trade winds

Correct Incorrect Correct answer

The monsoon westerlies from the subtropical anticyclone

Correct Incorrect Correct answer

The subtropical jet from the polar front jet

Correct Incorrect Correct answer

Suppressed southwest monsoon and drought in India

Correct Incorrect Correct answer

Enhanced southwest monsoon rainfall over central and northwest India

Correct Incorrect Correct answer

No impact on Indian weather

Correct Incorrect Correct answer

Enhanced northeast monsoon in the Bay of Bengal

Correct Incorrect Correct answer

The boots are working — continue normally

Correct Incorrect Correct answer

SLD icing suspected — ice beyond protected zone — exit icing condition immediately

Correct Incorrect Correct answer

Normal rime ice — apply additional cycles of boot inflation

Correct Incorrect Correct answer

Wait for the ice to accumulate and then inflate boots

Correct Incorrect Correct answer

700 hPa

Correct Incorrect Correct answer

500 hPa

Correct Incorrect Correct answer

300 hPa

Correct Incorrect Correct answer

200 hPa

Correct Incorrect Correct answer

Mumbai and Chennai MWOs

Correct Incorrect Correct answer

New Delhi and Mumbai MWOs

Correct Incorrect Correct answer

Kolkata and Hyderabad MWOs

Correct Incorrect Correct answer

Mumbai and Kolkata MWOs

Correct Incorrect Correct answer

The rotor extends only to the surface

Correct Incorrect Correct answer

Wave motion at altitude persists far downwind without visible cloud — only lenticulars (if moist) give warning

Correct Incorrect Correct answer

It only occurs below the freezing level

Correct Incorrect Correct answer

WXR detects wave motion as precipitation returns

Correct Incorrect Correct answer

6 hours

Correct Incorrect Correct answer

9 hours

Correct Incorrect Correct answer

24-30 hours

Correct Incorrect Correct answer

72 hours

Correct Incorrect Correct answer

Conduction from the Earth's surface

Correct Incorrect Correct answer

The combination of convection, radiation, and standard assumptions for a globally averaged atmosphere

Correct Incorrect Correct answer

Pure radiative cooling of the stratosphere

Correct Incorrect Correct answer

Ozone absorption of UV in the troposphere

Correct Incorrect Correct answer

The ELR is less than the SALR throughout

Correct Incorrect Correct answer

A lifting mechanism raises moist air to the Level of Free Convection (LFC) where it becomes warmer than environment

Correct Incorrect Correct answer

Subsidence keeps the inversion below the LCL

Correct Incorrect Correct answer

Dry air is mixed into the cloud layer from the sides

Correct Incorrect Correct answer

January-March

Correct Incorrect Correct answer

June-August (during active southwest monsoon)

Correct Incorrect Correct answer

May-June and October-November

Correct Incorrect Correct answer

December only

Correct Incorrect Correct answer

Terminal Surface Rain — Ground Reading

Correct Incorrect Correct answer

Thunderstorm with rain and hail — all approaches should be treated with extreme caution

Correct Incorrect Correct answer

True Sky Reading — Ground level report

Correct Incorrect Correct answer

Temperature Stabilising — Rain Gradient

Correct Incorrect Correct answer

The Coriolis force only

Correct Incorrect Correct answer

The pressure gradient (inversely proportional to isobar spacing)

Correct Incorrect Correct answer

The temperature at the level

Correct Incorrect Correct answer

The distance from the equator only

Correct Incorrect Correct answer

Stronger and veered compared to geostrophic

Correct Incorrect Correct answer

Weaker and backed compared to geostrophic (NH)

Correct Incorrect Correct answer

Same speed but 90° to isobars

Correct Incorrect Correct answer

Stronger and backed compared to geostrophic

Correct Incorrect Correct answer

Ignore it — wave turbulence does not reach FL370

Correct Incorrect Correct answer

Accept the SIGMET, request a deviation of at least 50-100 NM around the indicated area, and brief Va speed

Correct Incorrect Correct answer

Climb to FL500 to avoid all wave turbulence

Correct Incorrect Correct answer

Descend below FL200 to fly below the wave

Correct Incorrect Correct answer

Cumulonimbus and heavy showers

Correct Incorrect Correct answer

Warm, moist air with stratus, low cloud, drizzle, and poor visibility

Correct Incorrect Correct answer

Clear skies and good visibility after cold frontal passage

Correct Incorrect Correct answer

High-level cirrus and smooth flying conditions

Correct Incorrect Correct answer

Visibility exactly 9,999 m

Correct Incorrect Correct answer

Visibility 10 km or more

Correct Incorrect Correct answer

Visibility variable between 9 km and 9.9 km

Correct Incorrect Correct answer

Visibility 9 miles (US format)

Correct Incorrect Correct answer

40% probability of a permanent change

Correct Incorrect Correct answer

40% probability of a temporary condition — this is the lowest probability officially included in TAF

Correct Incorrect Correct answer

Certain change within 40 minutes

Correct Incorrect Correct answer

40-knot wind in temporary gusts

Correct Incorrect Correct answer

The air being unsaturated (dry)

Correct Incorrect Correct answer

The air being saturated — only once condensation begins does latent heat reduce the lapse rate sufficiently to be unstable

Correct Incorrect Correct answer

The wind speed exceeding the geostrophic threshold

Correct Incorrect Correct answer

The presence of a temperature inversion aloft

Correct Incorrect Correct answer

Warm then cold — typical mid-latitude pattern

Correct Incorrect Correct answer

Complex cloud and precipitation similar to warm front, but colder air is present both sides at the surface

Correct Incorrect Correct answer

Clear skies ahead with isolated CB at the surface front

Correct Incorrect Correct answer

Strong backing winds and rising pressure uniformly

Correct Incorrect Correct answer

Any cloud type below the freezing level

Correct Incorrect Correct answer

Deep tropical convective cells where ice crystal concentrations are high — even in clear air near the storm

Correct Incorrect Correct answer

Only in winter polar clouds

Correct Incorrect Correct answer

Only in cirrus above FL400

Correct Incorrect Correct answer

Relative humidity expressed as a ratio

Correct Incorrect Correct answer

The mass of water vapour per unit volume of air (g/m³)

Correct Incorrect Correct answer

Vapour pressure at saturation

Correct Incorrect Correct answer

The dew point temperature in Kelvin

Correct Incorrect Correct answer

Clear conditions and reduced humidity over the peninsula

Correct Incorrect Correct answer

Heavy rainfall over central India — far greater than the average monsoon

Correct Incorrect Correct answer

Dry weather over Tamil Nadu

Correct Incorrect Correct answer

Only coastal rainfall within 100 km of the coast

Correct Incorrect Correct answer

Air rises near the poles and sinks at the equator

Correct Incorrect Correct answer

Air rises near the equator (ITCZ), flows poleward at altitude, sinks at ~30° lat, and returns as trade winds

Correct Incorrect Correct answer

Air rises at 30°N and sinks at the equator

Correct Incorrect Correct answer

The trade winds blow from west to east

Correct Incorrect Correct answer

Equatorward (warm) side above the jet

Correct Incorrect Correct answer

Poleward (cold) side and below the jet core — greatest wind shear

Correct Incorrect Correct answer

Directly above the jet core at the stratospheric boundary

Correct Incorrect Correct answer

Downwind end of the jet streak only

Correct Incorrect Correct answer

Ceiling and Visibility — OK

Correct Incorrect Correct answer

Clear Air, Visibility Optimal, Kilometres

Correct Incorrect Correct answer

Ceiling and Visibility are OK (no cloud below 5,000 ft/MSA, visibility 10+ km, no significant weather)

Correct Incorrect Correct answer

Calm Air, Visibility Over 10 Kilometres

Correct Incorrect Correct answer

Slight erratic changes — walking still possible

Correct Incorrect Correct answer

Similar to light but more intense — walking difficult, loose objects may become projectiles

Correct Incorrect Correct answer

Abrupt changes, momentary loss of control possible

Correct Incorrect Correct answer

Aircraft practically uncontrollable

Correct Incorrect Correct answer

December-February northeast monsoon

Correct Incorrect Correct answer

June-August southwest monsoon — feeds the southwest monsoon low-level westerlies

Correct Incorrect Correct answer

Pre-monsoon April-May

Correct Incorrect Correct answer

Post-monsoon November

Correct Incorrect Correct answer

Read zero until the port is cleared

Correct Incorrect Correct answer

Read the last valid altitude before icing — freeze at that reading

Correct Incorrect Correct answer

Oscillate rapidly between readings

Correct Incorrect Correct answer

Over-read by 500 ft automatically

Correct Incorrect Correct answer

Widely spaced — 10 hPa between isobars

Correct Incorrect Correct answer

Closely spaced — less than 4 hPa between isobars over a short distance

Correct Incorrect Correct answer

Always drawn at 2 hPa intervals regardless of wind

Correct Incorrect Correct answer

At 8 hPa intervals for tropical charts

Correct Incorrect Correct answer

Mumbai (VABB)

Correct Incorrect Correct answer

Delhi (VIDP)

Correct Incorrect Correct answer

Kolkata (VECC) and Guwahati (VEGT) in pre-monsoon season

Correct Incorrect Correct answer

Chennai (VOMM) in October

Correct Incorrect Correct answer

Blowing dust reducing visibility

Correct Incorrect Correct answer

Blue layer dust — high-altitude haze

Correct Incorrect Correct answer

Below sea-level dust storm (desert airports)

Correct Incorrect Correct answer

Blowing snow from adjacent fields

Correct Incorrect Correct answer

At the mountain ridge crest

Correct Incorrect Correct answer

In the lenticular cloud above the first wave crest

Correct Incorrect Correct answer

On the windward slope below cloud base

Correct Incorrect Correct answer

Immediately below the first wave crest on the lee side, at or below ridge height

Correct Incorrect Correct answer

No performance correction — only ISA temperature is used

Correct Incorrect Correct answer

Corrections for reduced air density: longer takeoff roll, reduced climb gradient, higher TAS

Correct Incorrect Correct answer

Better performance than ISA — warm air holds more energy

Correct Incorrect Correct answer

Only fuel corrections, not takeoff corrections

Correct Incorrect Correct answer

-5°C

Correct Incorrect Correct answer

-25°C

Correct Incorrect Correct answer

-40°C

Correct Incorrect Correct answer

-56.5°C

Correct Incorrect Correct answer

Reads normal — altimeter uses static only

Correct Incorrect Correct answer

Shows incorrect altitude — altimeter uses both pitot and static

Correct Incorrect Correct answer

Reads normal (altimeter uses static only — pitot blockage does not affect altimeter)

Correct Incorrect Correct answer

Freezes at the last reading before blockage

Correct Incorrect Correct answer

Surface fronts and pressure systems at MSL

Correct Incorrect Correct answer

Upper troughs, ridges, and the steering flow for surface weather systems

Correct Incorrect Correct answer

Jet stream position at FL390

Correct Incorrect Correct answer

Cloud base and top heights

Correct Incorrect Correct answer

Intermittent heavy showers of short duration

Correct Incorrect Correct answer

Continuous, widespread moderate rain or snow over a large area ahead of the front

Correct Incorrect Correct answer

Hail within cumulonimbus in the warm sector

Correct Incorrect Correct answer

Freezing rain in the cold sector only

Correct Incorrect Correct answer

Polar vortex circulation from the stratosphere

Correct Incorrect Correct answer

Return flow of the Hadley Cell — equatorward surface flow deflected by Coriolis (NE trades NH, SE trades SH)

Correct Incorrect Correct answer

The subtropical jet stream at upper levels

Correct Incorrect Correct answer

Monsoon pressure gradients only

Correct Incorrect Correct answer

Slight, erratic changes in altitude and attitude

Correct Incorrect Correct answer

Aircraft attitude/altitude changes — occupants forced against restraints — difficult to move

Correct Incorrect Correct answer

Abrupt, severe attitude changes, momentary loss of control, damage possible

Correct Incorrect Correct answer

Aircraft practically uncontrollable, structural damage likely

Correct Incorrect Correct answer

Mean relative humidity of the troposphere

Correct Incorrect Correct answer

CAPE (Convective Available Potential Energy) from tephigram analysis

Correct Incorrect Correct answer

Surface QNH tendency

Correct Incorrect Correct answer

500 hPa wind speed

Correct Incorrect Correct answer

Ice crystals are denser than water droplets

Correct Incorrect Correct answer

Saturation vapour pressure over ice is LOWER than over liquid water — vapour deposits preferentially on ice

Correct Incorrect Correct answer

Ice crystals have a higher surface area

Correct Incorrect Correct answer

Supercooled water droplets evaporate due to solar radiation inside cloud

Correct Incorrect Correct answer

Better performance — cooler temperatures at altitude offset low pressure

Correct Incorrect Correct answer

Severely degraded performance — low pressure (high elevation) AND high temperature (ISA+) = very high density altitude

Correct Incorrect Correct answer

Normal ISA performance — altitude and temperature cancel out

Correct Incorrect Correct answer

Better engine performance due to less dense intake air

Correct Incorrect Correct answer

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