Which one of the following parts of the world does not receive rainfall any time of the year? (1) Central Europe (2) Central North America (3) Polar regions (4) Sub-Saharan areas

Which one of the following parts of the world does not receive rainfall any time of the year? (1) Central Europe (2) Central North America (3) Polar regions (4) Sub-Saharan areas
by

1 Answer

Answer :

(3) Polar regions Explanation: The amount of precipitation in a given region depends on the amount of available atmospheric water vapour (precipitable water), as well as on the processes that cause condensation, in particular the uplift of air associated with cyclones and fronts, as well as convection. If all the water vapour in the atmosphere were condensed, the earth’s surface would be covered, on average, with a 25 mm layer of water.
by
selected by

Related questions

Which one of the following parts of the world does not receive rainfall any time of the year ? (1) Central Europe (2) Central North America (3) Polar regions (4) Sub-Saharan areas

Description : Which one of the following parts of the world does not receive rainfall any time of the year ? (1) Central Europe (2) Central North America (3) Polar regions (4) Sub-Saharan areas

Last Answer :  Polar regions

Which one of the following is called North-easter? (1) Cold and fast-blowing winds in northern hemisphere that move from sub-polar to polar regions (2) Cold and fast-blowing winds in South Pole region (3) Cold and fast-blowing winds from the polar region in northern hemisphere (4) Winds blowing towards Kazakhstan in Central Asia

Description : Which one of the following is called North-easter? (1) Cold and fast-blowing winds in northern hemisphere that move from sub-polar to polar regions (2) Cold and fast-blowing winds in ... -blowing winds from the polar region in northern hemisphere (4) Winds blowing towards Kazakhstan in Central Asia

Last Answer : (3) Cold and fast-blowing winds from the polar region in northern hemisphere Explanation: The polar easterlies are the dry, cold prevailing winds that blow from the highpressure areas of the polar ... an equator ward out flow of air: that outflow is then deflected westward by the Coriolis Effect.

Which one of the following is called North-easter? (1) Cold and fast-blowing winds in northern hemisphere that move from sub-polar to polar regions (2) Cold and fast-blowing winds in South Pole region (3) Cold and fast-blowing winds from the polar region in northern hemisphere (4) Winds blowing towards Kazakhstan in Central Asia

Description : Which one of the following is called North-easter? (1) Cold and fast-blowing winds in northern hemisphere that move from sub-polar to polar regions (2) Cold and fast-blowing winds in ... -blowing winds from the polar region in northern hemisphere (4) Winds blowing towards Kazakhstan in Central Asia

Last Answer : Cold and fast-blowing winds from the polar region in northern hemisphere

How will Chinese influence in the region alter the course of development for sub-Saharan Africa and nbspDiscuss the contrasting development models put forward by the US and Europe with that of China.?

Description : How will Chinese influence in the region alter the course of development for sub-Saharan Africa and nbspDiscuss the contrasting development models put forward by the US and Europe with that of China.?

Last Answer : Need answer

Belt of Doldrums exists in which of the following regions? (a) Polar region (b) Equatorial region (c) Sub-Polar region (d) Sub-Tropical region

Description : Belt of Doldrums exists in which of the following regions? (a) Polar region (b) Equatorial region (c) Sub-Polar region (d) Sub-Tropical region

Last Answer : Ans: (b)

Of the following statements about the major soil types, the incorrect one is : (a) alluvial soils are easy to plough (b) red soils are rich in phosphorus, nitrogen and lime content (c) laterite is typically a soil of tropical regions which receive heavy seasonal rainfall (d) black soil is highly retentive of moisture and very productive

Description : Of the following statements about the major soil types, the incorrect one is : (a) alluvial soils are easy to plough (b) red soils are rich in phosphorus, nitrogen and lime content ( ... regions which receive heavy seasonal rainfall (d) black soil is highly retentive of moisture and very productive

Last Answer : Ans: (b)

How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas

Description : How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas

Last Answer : Ans: (a)

Among the following regions of India, which one receives comparatively least amount of annual rainfall? [IAS 2009] (a) An 80 km wide coastal belt from Nellore to Point Calimere (b) The middle and lower Asom valley (c) North-eastern Rajasthan (d) The coastal plains of Gujarat south of Narmada

Description : Among the following regions of India, which one receives comparatively least amount of annual rainfall? [IAS 2009] (a) An 80 km wide coastal belt from Nellore to Point Calimere (b) The middle and lower Asom valley (c) North-eastern Rajasthan (d) The coastal plains of Gujarat south of Narmada

Last Answer : Ans: (c)

One of the regions that receives rainfall from the North-Easterly monsoon is – (1) West Bengal (2) Assam (3) Kerala (4) Tamil Nadu

Description : One of the regions that receives rainfall from the North-Easterly monsoon is – (1) West Bengal (2) Assam (3) Kerala (4) Tamil Nadu

Last Answer : (4) Tamil Nadu Explanation: The period October to December is referred to as Northeast Monsoon season over peninsular India. It is the major period of rainfall activity over Tamil Nadu as it receives ... 60% of the annual rainfall and the interior districts get about 40-50% of the annual rainfall.

The climate of North America is influenced during winter by the – (1) Polar airmasses (2) Warm airmasses (3) Continental airmasses (4) Tropical airmasses

Description : The climate of North America is influenced during winter by the – (1) Polar airmasses (2) Warm airmasses (3) Continental airmasses (4) Tropical airmasses

Last Answer : (4) Tropical airmasses Explanation: Maritime tropical (mT) air masses affecting North America most often originate over the warm water of the Gulf of Mexico, the Caribbean Sea, or the adjacent ... Caribbean, and adjacent Atlantic are more common and cover a much wider area of the continent.

“Climate is extreme, rainfall is scanty, and the people used to be nomadic hoarders”. For which region is this statement correct? (1) African Savanna (2) Central Asian Steppes (3) Siberian Tundra (4) North American Prairies

Description : “Climate is extreme, rainfall is scanty, and the people used to be nomadic hoarders”. For which region is this statement correct? (1) African Savanna (2) Central Asian Steppes (3) Siberian Tundra (4) North American Prairies

Last Answer : (2) Central Asian Steppes

The equatorial regions receive rainfall throughout the year. What is the annual rainfall?

Description : The equatorial regions receive rainfall throughout the year. What is the annual rainfall?

Last Answer : 250 cms

The equatorial regions receive rainfall throughout the year. What is the annual rainfall?

Description : The equatorial regions receive rainfall throughout the year. What is the annual rainfall?

Last Answer : 250 cms

Observe the given map. Which one of the following statement is NOT true about the shaded state indicated on the map? (1) Society predominantly follows right of female ultimogeniture (2) The state is an example of areas with karst topography INDIA North eastern region (3) The state is a major producer of potatoes in India (4) Some parts of the state receive extremely high rainfal

Description : Observe the given map. Which one of the following statement is NOT true about the shaded state indicated on the map? (1) Society predominantly follows right of female ultimogeniture (2) The state is ... a major producer of potatoes in India (4) Some parts of the state receive extremely high rainfal

Last Answer : (3) The state is a major producer of potatoes in India

The world's wettest continent is : (1) Asia (2) Europe (3) North America (4) South America

Description : The world's wettest continent is : (1) Asia (2) Europe (3) North America (4) South America

Last Answer : (4) South America Explanation: The wettest continent, with plenty of rain forests is South America. The driest continent is clearly Australia, with a Bowen ratio of about 2, followed by Africa, ... . North America is also a relatively wet continent with a Bowen ratio significantly less than 1.0.

Alps mountain range is located in which continent? (1) Europe (2) North America (3) South America (4) Africa

Description : Alps mountain range is located in which continent? (1) Europe (2) North America (3) South America (4) Africa

Last Answer : (1) Europe Explanation: The Alps are the highes and most extensive mountain range system that lies entirely in Europe. It stretches approx imately 1,200 kilometres across eight Alpine countries: France, Switzerland, Italy Monaco, Liechtenstein, Austria, Germany, and Slovenia.

Name the continent where 'Tundra' type of climate is not found – (1) Europe (2) Asia (3) Africa (4) North America

Description : Name the continent where 'Tundra' type of climate is not found – (1) Europe (2) Asia (3) Africa (4) North America

Last Answer : (3) Africa Explanation: The meaning of the word 'tundra' is 'a region in continents of Asia, Europe and North America, where the growth of trees is prevented due to low temperatures and ... composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra.

Why do desert regions receive very little rainfall?

Description : Why do desert regions receive very little rainfall?

Last Answer : Need answer

Convectional Rainfall occurs in: (1) Equatorial region (2) Temperate region (3) Tropical region (4) Polar region

Description : Convectional Rainfall occurs in: (1) Equatorial region (2) Temperate region (3) Tropical region (4) Polar region

Last Answer : (1) Equatorial region Explanation: Convection rain commonly occurs in warmed or heated areas such as equatorial/tropical regions, where there is almost daily occurrence and even distribution of ... ground surface is locally overheated and the adjacent air, heated by conduction,expands and rises.

In tropical regions, (A) The surface gets heated more effectively than the arctic areas (B) After heating, the air becomes lighter and is displaced by cool air from the polar regions (C) The rising tropical air flows towards the polar region in the upper strata (D) All of the above

Description : In tropical regions, (A) The surface gets heated more effectively than the arctic areas (B) After heating, the air becomes lighter and is displaced by cool air from the polar regions (C) The rising tropical air flows towards the polar region in the upper strata (D) All of the above

Last Answer : (D) All of the above

The polar regions are sparsely populated because of - (1) lack of minerals (2) unsuitable climatic conditions (3) infertile land (4) mountainous topography

Description : The polar regions are sparsely populated because of - (1) lack of minerals (2) unsuitable climatic conditions (3) infertile land (4) mountainous topography

Last Answer : (2) unsuitable climatic conditions Explanation: The population density is low in polar regions because the climate is too cold and harsh for people to survive there. The polar regions such as the ... or no vegetation to support the resident population. Most of the polar regions are cold deserts.

Very strong and cold icy winds that blow in the Polar regions are called – (1) Typhoons (2) Tornadoes (3) Blizzards (4) Polar winds

Description : Very strong and cold icy winds that blow in the Polar regions are called – (1) Typhoons (2) Tornadoes (3) Blizzards (4) Polar winds

Last Answer : (3) Blizzards Explanation: A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a ... mile or less and must last for a prolonged period of time - typically three hours or more.

Rubber plantations are found in – (1) Temperate forests (2) Mountain regions (3) Polar regions (4) Equatorial regions

Description : Rubber plantations are found in – (1) Temperate forests (2) Mountain regions (3) Polar regions (4) Equatorial regions

Last Answer : (4) Equatorial regions Explanation: The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry ... , Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.

Variability of rainfall is (i) Largest in regions of high rainfall (ii) Largest in coastal areas (iii) Largest in regions of scanty rainfall The correct answer is (A) Only (i) (B) (i) and (ii) (C) Only (iii) (D) (ii) and (iii)

Description : Variability of rainfall is (i) Largest in regions of high rainfall (ii) Largest in coastal areas (iii) Largest in regions of scanty rainfall The correct answer is (A) Only (i) (B) (i) and (ii) (C) Only (iii) (D) (ii) and (iii)

Last Answer : Answer: Option C

During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than the eastern region (c) hills do not form barriers for winds (d) the area is far away from the sea

Description : During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than ... (c) hills do not form barriers for winds (d) the area is far away from the sea

Last Answer : Ans: (a)

Evergreen rain forest is mainly found in regions having well distributed annual rainfall – (1) Below 50 cm (2) 50-100 cm (3) 100-200 cm (4) More than 200 cm

Description : Evergreen rain forest is mainly found in regions having well distributed annual rainfall – (1) Below 50 cm (2) 50-100 cm (3) 100-200 cm (4) More than 200 cm

Last Answer : (4) More than 200 cm Explanation: Tropical evergreen forests are usually found in areas receiving more than 200 cm of rainfall and having a temperature of 15 °C to 30 °C. They occupy about seven per cent of the Earth's land surface and harbour more than half of the world's plants and animals

Name two types of cyclonic systems that affect India and two areas that receive rainfall from these systems -Geography

Description : Name two types of cyclonic systems that affect India and two areas that receive rainfall from these systems -Geography

Last Answer : Two cyclonic systems that affect India are : (i) Temperate cyclones — Region : North west of India (Punjab, Haryana) (ii) Tropical cyclones — Region : Eastern coast of India (Andhra Pradesh, Tamil Nadu, West Bengal)

Name two types of cyclonic systems that affect India and two areas that receive rainfall from these systems. -SST 10th

Description : Name two types of cyclonic systems that affect India and two areas that receive rainfall from these systems. -SST 10th

Last Answer : Two cyclonic systems that affect India are: (i) Temperate, cyclones-Region-North west of India (Punjab and Haryana) (ii) Tropical cyclones – Region – eastern coast of India (A.P., T.N., W.Bengal).

The western coast of India receive very high rainfall in summer mainly due to [NDA 2011] (a) Tropical location (b) Nearness to sea (c) Western Ghats (d) Himalayas

Description : The western coast of India receive very high rainfall in summer mainly due to [NDA 2011] (a) Tropical location (b) Nearness to sea (c) Western Ghats (d) Himalayas

Last Answer : Ans: (c)

Arrange the following cities in decreasing order of the rainfall they receive from the south-west monsoons in summer months: 1. Allahabad 2. Kolkata 3. Delhi 4. Patna (a) 2, 4, 1, 3 (b) 3, 1, 4, 2 (c) 1, 4, 3, 2 (d) 2, 4, 3, 1

Description : Arrange the following cities in decreasing order of the rainfall they receive from the south-west monsoons in summer months: 1. Allahabad 2. Kolkata 3. Delhi 4. Patna (a) 2, 4, 1, 3 (b) 3, 1, 4, 2 (c) 1, 4, 3, 2 (d) 2, 4, 3, 1

Last Answer : Ans: (d)

Why does the west coast of India receive more rainfall from southwest monsoon than the east coast? (1) Unlike the east coast this coast is straight (2) The Western Ghats obstruct the winds causing rainfall (3) The east coast is broader than the west coast (4) The Eastern Ghats extend parallel to wind direction

Description : Why does the west coast of India receive more rainfall from southwest monsoon than the east coast? (1) Unlike the east coast this coast is straight (2) The Western Ghats obstruct the winds causing ... east coast is broader than the west coast (4) The Eastern Ghats extend parallel to wind direction

Last Answer : (2) The Western Ghats obstruct the winds causing rainfall Explanation: The western side of the Western Ghats rise majestically to over 2500 meters above mean sea level to capture the Arabian sea ... on the western side. Consequently, the eastern side is typically known as the rain shadow region.

Kanha National Park belongs to which one among the following biogeographical areas in the world? [CDS 2011] (a) Tropical Sub-humid Forests (b) Tropical Humid Forests (c) Tropical Dry Forests (d) Tropical Moist Forests

Description : Kanha National Park belongs to which one among the following biogeographical areas in the world? [CDS 2011] (a) Tropical Sub-humid Forests (b) Tropical Humid Forests (c) Tropical Dry Forests (d) Tropical Moist Forests

Last Answer : Ans: (a)

Wind erosion is common in (a) desert (b) cold areas (c) areas where there is thick vegetation (d) areas of heavy rainfall

Description : Wind erosion is common in (a) desert (b) cold areas (c) areas where there is thick vegetation (d) areas of heavy rainfall

Last Answer : Ans: (a)

With reference to India, which one of the following statements is not correct? [IAS 2002] (a) About one-third of the area of the country records more than 750 millimetres of annual rainfall. (b) The dominant source of irrigation in the country is wells (c) Alluvial soil is the predominant type of soil in the northern plains of the country (d) The mountain areas account for about thirty percent of the surface area of the country

Description : With reference to India, which one of the following statements is not correct? [IAS 2002] (a) About one-third of the area of the country records more than 750 millimetres of annual rainfall. (b ... the country (d) The mountain areas account for about thirty percent of the surface area of the country

Last Answer : Ans: (d)

Rainfall caused by intense evaporation in equatorial areas is called _______. (1) Orographic rainfall (2) Cyclonic rainfall (3) Frontal rainfall (4) Convectional rainfall

Description : Rainfall caused by intense evaporation in equatorial areas is called _______. (1) Orographic rainfall (2) Cyclonic rainfall (3) Frontal rainfall (4) Convectional rainfall

Last Answer : (4) Convectional rainfall Explanation: The equatorial regions are known for convectional rainfall that occurs due to the thermal convection currents caused due to the heating of ground due to insolation. In ... daily basis. The rainfall is of very short duration but in the form of heavy showers.

Match the following types of soil and regions where they are found in India: List-I List-II A. Alluvial Soils 1. Highland areas of the Plateau B. Black Soils 2. Periphery of the Plateau C. Red Soils 3. Deccan Lava Tracts D. Laterite Soils 4. River Basins and Coastal Plains Codes: A B C D (a) 4 3 1 2 (b) 4 2 3 1 (c) 1 2 3 4 (d) 4 3 2 1

Description : Match the following types of soil and regions where they are found in India: List-I List-II A. Alluvial Soils 1. Highland areas of the Plateau B. Black Soils 2. Periphery of the Plateau C. Red Soils 3. Deccan Lava Tracts D. Laterite Soils 4. ... C D (a) 4 3 1 2 (b) 4 2 3 1 (c) 1 2 3 4 (d) 4 3 2 1

Last Answer : Ans: (d)

Extensive deserts occur in the western tropical regions of continents because : (1) of easterly trade winds. (2) cold ocean currents flow along the western coasts. (3) of the effect of both the off-shore easterly trade winds and cold ocean currents. (4) the rate of evaporation is greater along the western margin areas.

Description : Extensive deserts occur in the western tropical regions of continents because : (1) of easterly trade winds. (2) cold ocean currents flow along the western coasts. (3) of the effect of both the ... winds and cold ocean currents. (4) the rate of evaporation is greater along the western margin areas.

Last Answer : (3) of the effect of both the off-shore easterly trade winds and cold ocean currents. Explanation: Extensive deserts occur in the western tropical regions of continents because of the effect of ... is found near the tropics of Cancer and Capricorn, usually toward the western side of the continents

Which of the following areas or regions is most prone to earth-quakes? (1) Deccan Plateau (2) Ganga-Brahmaputra Valley (3) Plains of northern India (4) Western Ghats

Description : Which of the following areas or regions is most prone to earth-quakes? (1) Deccan Plateau (2) Ganga-Brahmaputra Valley (3) Plains of northern India (4) Western Ghats

Last Answer : (2) Ganga-Brahmaputra Valley Explanation: The Ganga-Brahmaputra basin is a high earth-quake risk zone. It comes under Zone 5 covers the areas with the highest risks zone that suffers earth- ... enough over past centuries to release the energy accumulated by the upward movement of the Indian plate.

Why does north-western India receive substantial rainfall during winter months?

Description : Why does north-western India receive substantial rainfall during winter months?

Last Answer : Westerly disturbances

Why does north-western India receive substantial rainfall during winter months?

Description : Why does north-western India receive substantial rainfall during winter months?

Last Answer : Westerly disturbances

Hanging Valley is very common in – (1) high mountains (2) sub-Arctic region (3) glaciated areas (4) coastal belt

Description : Hanging Valley is very common in – (1) high mountains (2) sub-Arctic region (3) glaciated areas (4) coastal belt

Last Answer : (2) sub-Arctic region Explanation: When the glaciers melt, the tributary troughs are left as hanging valleys high on the walls of the main glacial valley. A hanging valley is a tributary ... commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume.

The areas around the North and South poles within the Polar circles is called -------? A. The Torrid Zone B. The Frigid Zone (Answer) C. The Temperature Zone D. The Hardiness Zone

Description : The areas around the North and South poles within the Polar circles is called -------? A. The Torrid Zone B. The Frigid Zone (Answer) C. The Temperature Zone D. The Hardiness Zone

Last Answer : B. The Frigid Zone (Answer)

Mark correct option a) Sorting sub office are situated near the junction of several mail linesb) Nodal Post office is working in important cities some post office are authorized to receive letters from neighboring PO and sort the mail as per sorting diagram.c) Central bagging unit is branch of RMS office .d) All the above

Description : Mark correct option a) Sorting sub office are situated near the junction of several mail lines b) Nodal Post office is working in important cities some post office are authorized to receive letters from ... per sorting diagram. c) Central bagging unit is branch of RMS office . d) All the above

Last Answer : d) All the above

How are the sources of rainfall in the North-west part of India different from the rainfall experienced on the coastal areas of Eastern India in winter? -SST 10th

Description : How are the sources of rainfall in the North-west part of India different from the rainfall experienced on the coastal areas of Eastern India in winter? -SST 10th

Last Answer : North-west India—Summer: South-west Monsoons (Bay of Bengal stream), Winter: Winter cyclones from Mediterranean Sea. Coastal regions of Eastern India—Winter or North-east Monsoon or Retreating Monsoons.

Match List I with List II and select the correct answer by using the codes gives below the lists: List-I (Climatic conditions) List-II (Resons) A. Chennai is warmer than Kolkata 1. North-East Monsoon B. Snowfall in Himalayas 2. Altitude C. Rainfall decreases from West Bengal to Punjab 3. Western depressions D. Sutlej-Ganga Plain gets some rain in winter 4. Distance from sea 5. Latitude Codes: A B C D (a) 1 2 4 5 (b) 4 5 1 3 (c) 5 2 4 3 (d) 5 1 3 4

Description : Match List I with List II and select the correct answer by using the codes gives below the lists: List-I (Climatic conditions) List-II (Resons) A. Chennai is warmer than Kolkata 1. North-East Monsoon B. Snowfall in Himalayas 2. Altitude C. ... (a) 1 2 4 5 (b) 4 5 1 3 (c) 5 2 4 3 (d) 5 1 3 4

Last Answer : Ans: (c)

Which part of India receives rainfall from both the SouthWest and North-West monsoons? (a) Tamil Nadu (b) Odisha (c) Lakshadweep Islands (d) Andaman and Nicobar Islands

Description : Which part of India receives rainfall from both the SouthWest and North-West monsoons? (a) Tamil Nadu (b) Odisha (c) Lakshadweep Islands (d) Andaman and Nicobar Islands

Last Answer : Ans: (d)

Which of the following statements is not true? (a) The intensity of monsoons is determined by tropical depressions (b) Tamil Nadu receives rainfall from north-east monsoon (c) Andhra Pradesh is not much affected by retreating south-west monsoon (d) All are correct

Description : Which of the following statements is not true? (a) The intensity of monsoons is determined by tropical depressions (b) Tamil Nadu receives rainfall from north-east monsoon (c) Andhra Pradesh is not much affected by retreating south-west monsoon (d) All are correct

Last Answer : Ans: (d)

Consider the following statements: 1. The south-west monsoon causes heavy rainfall in the Shillong plateau. 2. The north-east monsoon causes the rainfall over Orissa coast during winter. Which of these statements is/are correct ? [CDS 2003] (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Description : Consider the following statements: 1. The south-west monsoon causes heavy rainfall in the Shillong plateau. 2. The north-east monsoon causes the rainfall over Orissa coast during winter. Which of these statements is/are correct ? [CDS 2003] (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Last Answer : Ans: (a)

The north-western India receives substantial rainfall during winter months because of: (a) south-west monsoons (b) retreating monsoons (c) north-east monsoons (d) westerly disturbances

Description : The north-western India receives substantial rainfall during winter months because of: (a) south-west monsoons (b) retreating monsoons (c) north-east monsoons (d) westerly disturbances

Last Answer : Ans: (d)