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Which phenomenon causes 'Cherry Blossoms' in Meghalaya?
- Northeast Monsoon
- Winter rainfall
- Spring showers
- Autumn winds
Answer: Spring showers
Cherry Blossoms in Meghalaya bloom during spring (March-April) due to mild temperatures and spring showers. The state hosts the India International Cherry Blossom Festival. These flowers are culturally significant and boost eco-tourism.
Which process forms a 'hanging valley'?
- River erosion
- Glacial erosion
- Wind erosion
- Coastal erosion
Answer: Glacial erosion
Hanging valleys form when a smaller glacier tributary joins a larger glacier. The main glacier erodes deeper, leaving the tributary valley 'hanging' above. Waterfalls often form where streams from hanging valleys drop into the main valley.
Which river is known as the 'Lifeline of Uttarakhand'?
- Ganga
- Yamuna
- Alaknanda
- Bhagirathi
Answer: Ganga
The Ganga River is called the 'Lifeline of Uttarakhand' as it originates in the state (Gangotri Glacier) and supports agriculture, hydropower, and tourism. Major tributaries like Alaknanda and Bhagirathi merge to form the Ganga at Devprayag.
Which factor causes 'Norwesters' in Eastern India?
- Western Disturbances
- Local convection
- Bay of Bengal moisture
- Both B and C
Answer: Both B and C
Norwesters (Kal Baisakhi) in Eastern India are caused by local convection combined with moisture from the Bay of Bengal. These evening thunderstorms occur in April-May, bringing heavy rain, lightning, and strong winds that relieve pre-monsoon heat.
Which process forms a 'V-shaped valley'?
- Glacial erosion
- River erosion
- Wind erosion
- Coastal erosion
Answer: River erosion
V-shaped valleys are formed by river erosion, where flowing water cuts downward into the landscape. The steep sides result from vertical erosion dominating over lateral erosion. In contrast, glaciers create U-shaped valleys.
Which river is known as the 'Lifeline of Jharkhand'?
- Damodar
- Subarnarekha
- Koel
- Barakar
Answer: Damodar
The Damodar River is called the 'Lifeline of Jharkhand' as it provides water for irrigation, industry, and power generation. The Damodar Valley Corporation (DVC) manages multipurpose projects on the river. It flows through Jharkhand and West Bengal.
Which phenomenon is responsible for 'Blossom Showers' in Kerala?
- Northeast Monsoon
- Pre-monsoon showers
- Western Disturbances
- Retreating Monsoon
Answer: Pre-monsoon showers
Blossom Showers are pre-monsoon rainfall in Kerala during March-April that help in the flowering of coffee and cardamom plantations. These showers are caused by convective activity and moisture from the Arabian Sea, benefiting horticulture.
Which landform is created by river deposition at its mouth?
- Delta
- Estuary
- Fjord
- Oxbow Lake
Answer: Delta
A delta is formed by river deposition of sediments at its mouth where it enters a sea or lake. The Ganga-Brahmaputra delta is the world's largest. Estuaries are tidal mouths without significant deposition; fjords are glacial valleys flooded by sea.
Which climate type has no dry season and heavy rainfall throughout the year?
- Tropical Monsoon
- Equatorial
- Mediterranean
- Continental
Answer: Equatorial
Equatorial climate has no dry season and experiences heavy rainfall (over 200 cm annually) throughout the year due to convectional rainfall. Found near the Equator in Amazon, Congo Basin, and Indonesia. Supports tropical rainforests.
Which Indian state is the largest producer of limestone?
- Madhya Pradesh
- Rajasthan
- Andhra Pradesh
- Tamil Nadu
Answer: Madhya Pradesh
Madhya Pradesh is the largest producer of limestone in India, contributing about 20% of national production. Limestone is essential for cement, steel, and chemical industries. Major deposits are in Satna, Katni, and Jabalpur districts.
Which type of plate boundary creates mid-ocean ridges?
- Convergent
- Divergent
- Transform
- Passive
Answer: Divergent
Divergent plate boundaries, where tectonic plates move apart, create mid-ocean ridges through seafloor spreading. Magma rises to fill the gap, forming new oceanic crust. The Mid-Atlantic Ridge is a classic example.
Which river is known as the 'Lifeline of Gujarat'?
- Sabarmati
- Narmada
- Tapti
- Mahi
Answer: Narmada
The Narmada River is called the 'Lifeline of Gujarat' as it provides water for irrigation, drinking, and industry through projects like Sardar Sarovar Dam. The river is culturally significant and supports agriculture in the drought-prone regions of Gujarat.
Which factor causes 'Mango Showers' in South India?
- Northeast Monsoon
- Pre-monsoon thunderstorms
- Western Disturbances
- Cyclonic storms
Answer: Pre-monsoon thunderstorms
Mango Showers are pre-monsoon thunderstorms in Kerala and Karnataka during March-April. They help in early ripening of mangoes and reduce summer heat. These showers are caused by convective activity and moisture from the Arabian Sea.
Which process forms a 'U-shaped valley'?
- River erosion
- Glacial erosion
- Wind erosion
- Coastal erosion
Answer: Glacial erosion
U-shaped valleys are formed by glacial erosion, where glaciers carve wide, steep-sided valleys with flat bottoms. In contrast, river erosion creates V-shaped valleys. U-shaped valleys are common in the Himalayas and Alps.
Which river is known as the 'Lifeline of Chhattisgarh'?
- Mahanadi
- Indravati
- Hasdeo
- Sheonath
Answer: Mahanadi
The Mahanadi River is called the 'Lifeline of Chhattisgarh' as it provides water for irrigation, drinking, and industry. The river originates in Chhattisgarh and flows through Odisha. Major projects include the Mahanadi Reservoir and Hirakud Dam.
Which phenomenon causes 'Kal Baisakhi' in West Bengal?
- Western Disturbances
- Local thunderstorms
- Bay of Bengal cyclones
- Retreating monsoon
Answer: Local thunderstorms
Kal Baisakhi (Nor'westers) are violent evening thunderstorms in West Bengal and Assam during April-May. They bring heavy rain, lightning, and strong winds, providing relief from pre-monsoon heat. They are caused by local convection and moisture from the Bay of Bengal.
Which landform is created by glacial deposition?
- Cirque
- Moraine
- Arête
- Horn
Answer: Moraine
Moraines are ridges of glacial till (rock debris) deposited by glaciers. Types include lateral, medial, terminal, and ground moraines. Cirques, arêtes, and horns are erosional landforms created by glacial action.
Which river is known as the 'Sorrow of Odisha'?
- Mahanadi
- Brahmani
- Baitarani
- Subarnarekha
Answer: Mahanadi
The Mahanadi River is called the 'Sorrow of Odisha' due to its history of devastating floods in the coastal plains. The Hirakud Dam was built to control floods and provide irrigation. The river originates in Chhattisgarh and flows into the Bay of Bengal.
Which factor is responsible for the 'October Heat' in India?
- Retreating monsoon
- High humidity and temperature
- Western Disturbances
- El Niño
Answer: High humidity and temperature
October Heat occurs during the retreating monsoon (October-November) when clear skies and high humidity combine with warm temperatures, creating oppressive weather. It affects North and Central India before winter sets in.
Which process is responsible for the formation of karst topography?
- Wind erosion
- Glacial action
- Chemical weathering of limestone
- Volcanic activity
Answer: Chemical weathering of limestone
Karst topography forms through chemical weathering (dissolution) of soluble rocks like limestone, dolomite, and gypsum by acidic rainwater. Features include caves, sinkholes, and underground rivers. Found in Meghalaya, India.