Mock Test 6: Full DGCA Meteorology (50 MCQs)

The equatorial tropics

Correct Incorrect Correct answer

Mid-latitudes in summer

Correct Incorrect Correct answer

The poles in winter

Correct Incorrect Correct answer

The Tibetan Plateau

Correct Incorrect Correct answer

Pressure altitude + (120 × ISA deviation)

Correct Incorrect Correct answer

True altitude − (120 × ISA deviation)

Correct Incorrect Correct answer

QNH × ISA deviation

Correct Incorrect Correct answer

Pressure altitude / ISA temperature

Correct Incorrect Correct answer

QNH is unavailable above this altitude

Correct Incorrect Correct answer

It eliminates the need to update QNH for each region — all aircraft share a common altitude datum

Correct Incorrect Correct answer

It corresponds to the actual pressure at FL110 in India

Correct Incorrect Correct answer

ATC cannot receive QNH corrections above FL110

Correct Incorrect Correct answer

Dew point is 100°C

Correct Incorrect Correct answer

Air is saturated — actual vapour pressure equals saturation vapour pressure

Correct Incorrect Correct answer

Air contains 100 grams of water per kg

Correct Incorrect Correct answer

Precipitation is guaranteed

Correct Incorrect Correct answer

45°N latitude

Correct Incorrect Correct answer

The poles

Correct Incorrect Correct answer

The equator

Correct Incorrect Correct answer

FL180

Correct Incorrect Correct answer

Advection fog from the Bay of Bengal

Correct Incorrect Correct answer

Radiation fog — clear nights, light winds, high humidity from irrigation and rivers

Correct Incorrect Correct answer

Orographic fog from Himalayan lifting

Correct Incorrect Correct answer

Steam fog from warm river water

Correct Incorrect Correct answer

It is easier to detect on radar

Correct Incorrect Correct answer

It presents a long, impenetrable wall of CB cells — circumnavigation requires very large detours

Correct Incorrect Correct answer

Individual cells are weaker

Correct Incorrect Correct answer

Lightning is less frequent in squall lines

Correct Incorrect Correct answer

Rime ice

Correct Incorrect Correct answer

Mixed ice

Correct Incorrect Correct answer

Clear (glaze) ice

Correct Incorrect Correct answer

Frost

Correct Incorrect Correct answer

Kerala

Correct Incorrect Correct answer

Rajasthan

Correct Incorrect Correct answer

Tamil Nadu

Correct Incorrect Correct answer

Himachal Pradesh

Correct Incorrect Correct answer

Parallel to isobars from low to high

Correct Incorrect Correct answer

Perpendicular to isobars from high to low pressure

Correct Incorrect Correct answer

Parallel to isobars from high to low

Correct Incorrect Correct answer

At 45° to isobars in cyclonic systems

Correct Incorrect Correct answer

Freezing Fog with Drizzle

Correct Incorrect Correct answer

Freezing Drizzle — supercooled droplets freezing on impact

Correct Incorrect Correct answer

Fog Zone Drizzle — heavy drizzle in fog

Correct Incorrect Correct answer

Flying Zone — Drizzle below 200 ft

Correct Incorrect Correct answer

High moisture content retaining heat at night

Correct Incorrect Correct answer

Low specific heat of sand and absence of moisture — rapid radiative cooling at night

Correct Incorrect Correct answer

Strong sea breeze moderating temperatures

Correct Incorrect Correct answer

Tropical cyclone influence on desert margins

Correct Incorrect Correct answer

Summer — greatest poleward migration

Correct Incorrect Correct answer

Winter — greatest temperature contrast between polar and tropical air

Correct Incorrect Correct answer

Monsoon season

Correct Incorrect Correct answer

Spring equinox only

Correct Incorrect Correct answer

Air inside them is stationary

Correct Incorrect Correct answer

They continuously form on the upwind side and dissipate on the downwind side of the wave crest — the cloud appears fixed

Correct Incorrect Correct answer

They are ice clouds above the jet stream

Correct Incorrect Correct answer

They only form in calm conditions

Correct Incorrect Correct answer

Delhi (Indira Gandhi International)

Correct Incorrect Correct answer

Kolkata (Netaji Subhas Chandra Bose International)

Correct Incorrect Correct answer

Mumbai (Chhatrapati Shivaji Maharaj International)

Correct Incorrect Correct answer

Chennai (Chennai International Airport)

Correct Incorrect Correct answer

The warm air above prevents rising parcels from cooling further — stability is absolute

Correct Incorrect Correct answer

A moist parcel encounters warmer surrounding air and loses buoyancy — it cannot continue rising

Correct Incorrect Correct answer

It reduces the DALR to below the SALR

Correct Incorrect Correct answer

It produces strong divergence at the inversion top

Correct Incorrect Correct answer

Warm, moist, conditionally unstable

Correct Incorrect Correct answer

Extremely cold, very dry, and very stable at source

Correct Incorrect Correct answer

Cold and moist — destabilises over warm ocean

Correct Incorrect Correct answer

Hot, dry, convective

Correct Incorrect Correct answer

New Delhi

Correct Incorrect Correct answer

Kolkata

Correct Incorrect Correct answer

Mumbai

Correct Incorrect Correct answer

Chennai

Correct Incorrect Correct answer

Log the report and continue approaches as normal

Correct Incorrect Correct answer

Issue LLWS warning to all aircraft in the approach phase and record the PIREP

Correct Incorrect Correct answer

Cancel the pilot's licence

Correct Incorrect Correct answer

Declare an emergency on behalf of all aircraft

Correct Incorrect Correct answer

The energy needed to lift an air parcel to the tropopause

Correct Incorrect Correct answer

The energy available for thunderstorm development — large CAPE = high thunderstorm potential

Correct Incorrect Correct answer

The cooling rate of the environmental air

Correct Incorrect Correct answer

Potential wind speed at the jet stream level

Correct Incorrect Correct answer

Radiative cooling — becoming more stable

Correct Incorrect Correct answer

Heating from below over warm ocean — destabilising, producing convective cloud and showers

Correct Incorrect Correct answer

Absorption of ozone from the stratosphere

Correct Incorrect Correct answer

Subsidence from the jet stream above

Correct Incorrect Correct answer

The low-level inflow wind

Correct Incorrect Correct answer

The surface wind below the storm

Correct Incorrect Correct answer

The upper wind at the tropopause level (downwind)

Correct Incorrect Correct answer

The previous storm path

Correct Incorrect Correct answer

It is detected by WXR and causes visible airframe icing

Correct Incorrect Correct answer

Ice crystals enter jet engines causing core icing and surge — not detected by WXR

Correct Incorrect Correct answer

It forms on windshields at FL450

Correct Incorrect Correct answer

It occurs only below the freezing level

Correct Incorrect Correct answer

Wind from 240° at 18 kt, gusting to 30 kt

Correct Incorrect Correct answer

Wind to 240° at 18 kt, gusting to 30 kt

Correct Incorrect Correct answer

24 kt wind from 180°, gradient 30 kt

Correct Incorrect Correct answer

Wind 240° at 18 NM/h with gust peak 30 NM/h

Correct Incorrect Correct answer

Radiation cooling occurs at night under the frontal cloud deck

Correct Incorrect Correct answer

Precipitation from warm air above evaporates into the cold air below, saturating it

Correct Incorrect Correct answer

Katabatic winds drain cold air from the hills

Correct Incorrect Correct answer

Subsidence warming evaporates cloud droplets

Correct Incorrect Correct answer

Sky condition — no cloud (clear sky) below FL120

Correct Incorrect Correct answer

Scattered cloud with lightning risk

Correct Incorrect Correct answer

Sky code — CAVOK equivalent

Correct Incorrect Correct answer

Sky contamination — sandstorm or dust

Correct Incorrect Correct answer

Strong tailwinds on landing

Correct Incorrect Correct answer

Sudden reversal of wind direction and speed on final approach as cold air drains into the valley

Correct Incorrect Correct answer

Dense cloud formation at valley level

Correct Incorrect Correct answer

Lightning from orographic convection

Correct Incorrect Correct answer

The Sahara Desert

Correct Incorrect Correct answer

The Rajasthan plains

Correct Incorrect Correct answer

Continental Europe in summer

Correct Incorrect Correct answer

The open ocean (SST changes very slowly)

Correct Incorrect Correct answer

More than 60 minutes each

Correct Incorrect Correct answer

Less than 60 minutes each, occurring in less than 50% of the period

Correct Incorrect Correct answer

The entire forecast period

Correct Incorrect Correct answer

Exactly 30 minutes

Correct Incorrect Correct answer

Winter (November-February)

Correct Incorrect Correct answer

Post-monsoon (October)

Correct Incorrect Correct answer

Pre-monsoon summer (April-June) — peak temperature, low humidity effect added

Correct Incorrect Correct answer

The onset of monsoon in June

Correct Incorrect Correct answer

Anticlockwise surface winds and rising air

Correct Incorrect Correct answer

Clockwise surface winds and subsiding air

Correct Incorrect Correct answer

A developing tropical cyclone

Correct Incorrect Correct answer

A frontal wave about to develop

Correct Incorrect Correct answer

Altocumulus floccus

Correct Incorrect Correct answer

Cumulonimbus capillatus

Correct Incorrect Correct answer

Altocumulus lenticularis (ACSL) — multiple lenticular layers mark wave crests

Correct Incorrect Correct answer

Cirrocumulus in mackerel sky

Correct Incorrect Correct answer

TAF issued on 15th, valid from 06 UTC to 12 UTC on 16th — 30 hour forecast

Correct Incorrect Correct answer

TAF valid on 15 June from 06 to 12 UTC — 6 hour forecast

Correct Incorrect Correct answer

TAF issued 15 June valid for 6 hours only

Correct Incorrect Correct answer

TAF valid from 15:06 local time to 16:12 local time

Correct Incorrect Correct answer

Clear ice accretion above FL180 only

Correct Incorrect Correct answer

Icing risk in cloud between the freezing level (10,000 ft) and cloud top, most severe near the freezing level

Correct Incorrect Correct answer

No icing risk below FL200 in winter India

Correct Incorrect Correct answer

Rime ice only above FL250

Correct Incorrect Correct answer

Steady (no change)

Correct Incorrect Correct answer

Rising 5-8 hPa

Correct Incorrect Correct answer

Falling 3-6+ hPa rapidly

Correct Incorrect Correct answer

Oscillating up and down

Correct Incorrect Correct answer

Rain and Snow falling simultaneously

Correct Incorrect Correct answer

Rapid Atmospheric Shift — Northwestern

Correct Incorrect Correct answer

Rain from altostratus nimbostratus

Correct Incorrect Correct answer

Rain abruptly stopping — now clear

Correct Incorrect Correct answer

30-60 minutes

Correct Incorrect Correct answer

5-15 minutes

Correct Incorrect Correct answer

1-2 hours

Correct Incorrect Correct answer

Only 1-2 minutes

Correct Incorrect Correct answer

cP air moving over warm Bay of Bengal

Correct Incorrect Correct answer

mT air moving onshore over cooler land — radiation fog mixed with advection

Correct Incorrect Correct answer

cT air from the Arabian Peninsula in summer

Correct Incorrect Correct answer

Orographic lifting of mT air over the Western Ghats

Correct Incorrect Correct answer

The tropical atmosphere contains more ozone

Correct Incorrect Correct answer

Deep convection carries air to greater heights in the tropics — higher, therefore colder

Correct Incorrect Correct answer

The solar radiation is weaker in the tropics

Correct Incorrect Correct answer

The tropical jet stream is weaker

Correct Incorrect Correct answer

The storm is in the cumulus (developing) stage

Correct Incorrect Correct answer

The storm has reached the tropopause — it is mature and most hazardous

Correct Incorrect Correct answer

The storm is in the dissipating stage and weakening

Correct Incorrect Correct answer

The anvil indicates low-level turbulence only

Correct Incorrect Correct answer

Provide pilot weather displays in the cockpit

Correct Incorrect Correct answer

Detect precipitation cells and vector aircraft around severe weather

Correct Incorrect Correct answer

Measure upper wind speed at the jet stream

Correct Incorrect Correct answer

Issue TAFs automatically

Correct Incorrect Correct answer

Cb→Cu→Sc→St

Correct Incorrect Correct answer

St→Sc→Cu→Cb

Correct Incorrect Correct answer

Ci→Cs→As→Ns

Correct Incorrect Correct answer

Ns→As→Cs→Ci

Correct Incorrect Correct answer

Temperature rises — RH drops

Correct Incorrect Correct answer

Air rises and cools

Correct Incorrect Correct answer

No water is added or removed from the parcel

Correct Incorrect Correct answer

Air descends and warms

Correct Incorrect Correct answer

A tropical cyclone from the Bay of Bengal

Correct Incorrect Correct answer

An extratropical cyclone originating in the Mediterranean, moving along the subtropical jet

Correct Incorrect Correct answer

A monsoon depression over the Bay of Bengal

Correct Incorrect Correct answer

A local heat low from the Thar Desert

Correct Incorrect Correct answer

10,000 ft (no error)

Correct Incorrect Correct answer

9,850 ft — lower than indicated (QNH > standard so standard reads lower)

Correct Incorrect Correct answer

10,150 ft — higher than indicated

Correct Incorrect Correct answer

Impossible to determine without temperature data

Correct Incorrect Correct answer

High cloud (CH)

Correct Incorrect Correct answer

A middle cloud genus

Correct Incorrect Correct answer

A cloud with vertical extent spanning low, middle, and high levels

Correct Incorrect Correct answer

A low cloud type

Correct Incorrect Correct answer

0 K

Correct Incorrect Correct answer

273.15 K

Correct Incorrect Correct answer

288.15 K

Correct Incorrect Correct answer

300 K

Correct Incorrect Correct answer

Risk of CB embedded in stratiform cloud

Correct Incorrect Correct answer

Cosmic/ionising radiation exposure at altitude

Correct Incorrect Correct answer

Sea surface temperature effects on performance

Correct Incorrect Correct answer

Tropical cyclone risk

Correct Incorrect Correct answer

Sudden reduction in headwind (windshear) causing increased airspeed

Correct Incorrect Correct answer

Sudden increase in headwind and airspeed above glidepath

Correct Incorrect Correct answer

Sudden reduction in headwind — loss of lift and airspeed below glidepath

Correct Incorrect Correct answer

No performance change — inversions only affect cloud base

Correct Incorrect Correct answer

FL100

Correct Incorrect Correct answer

FL180

Correct Incorrect Correct answer

FL240

Correct Incorrect Correct answer

FL300

Correct Incorrect Correct answer

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