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The Wiechert-Gutenberg discontinuity is another name for the core-mantle boundary.
- True
- False
Answer: True
The Wiechert-Gutenberg discontinuity (commonly called Gutenberg discontinuity) at about 2,900 km depth marks the boundary between Earth's mantle and outer core. Named after seismologists Emil Wiechert and Beno Gutenberg.
Which Indian state is the largest producer of banana?
- Andhra Pradesh
- Gujarat
- Maharashtra
- Tamil Nadu
Answer: Andhra Pradesh
Andhra Pradesh is the largest producer of banana in India, contributing about 20% of national production. Major banana-growing districts are Krishna, Godavari, and Chittoor. India is the world's largest banana producer.
Which river is known as the 'River of Sorrows' in Bangladesh?
- Padma
- Jamuna
- Brahmaputra
- Meghna
Answer: Brahmaputra
The Brahmaputra River (called Jamuna in Bangladesh) is known as the 'River of Sorrows' due to its devastating floods that affect millions. The river carries heavy silt load from the Himalayas, raising its bed and causing frequent course changes.
The Rajmahal Hills are located in Jharkhand.
- True
- False
Answer: True
The Rajmahal Hills are located in Jharkhand, formed by volcanic activity during the Jurassic period. They are part of the Chota Nagpur Plateau and are rich in coal and other minerals. The hills are named after the town of Rajmahal.
Which sanctuary is famous for the Indian pangolin?
- Satkosia
- Simlipal
- Hadgarh
- All of these
Answer: All of these
All three sanctuaries in Odisha—Satkosia, Simlipal, and Hadgarh—are important habitats for the endangered Indian pangolin. This scaly anteater is protected under Schedule I of the Wildlife Protection Act. Conservation efforts focus on anti-poaching and habitat protection.
The _______ is the largest lake in South America.
- Lake Titicaca
- Lake Maracaibo
- Lake Buenos Aires
- Lagoa dos Patos
Answer: Lake Maracaibo
Lake Maracaibo in Venezuela is the largest lake in South America by surface area (13,210 sq km). Though technically a tidal bay, it is commonly called a lake. It is connected to the Caribbean Sea and is rich in oil reserves.
Which is India's first commercial biofuel plant location?
- Assam
- Haryana
- Gujarat
- Tamil Nadu
Answer: Haryana
India's first commercial biofuel plant was established in Haryana (Panipat) by Indian Oil Corporation. It produces ethanol from agricultural residues. Biofuels are renewable alternatives to fossil fuels, supporting energy security and rural economy.
The _______ is the largest cave temple in India dedicated to Lord Shiva.
- Ajanta
- Ellora Kailasa
- Elephanta
- Badami
Answer: Ellora Kailasa
The Kailasa Temple at Ellora Caves in Maharashtra is the largest monolithic rock-cut temple dedicated to Lord Shiva. Carved from a single rock in the 8th century, it is an architectural marvel and a UNESCO World Heritage Site.
India is the largest producer of okra (bhindi) in the world.
- True
- False
Answer: True
India is the largest producer of okra (bhindi) globally, contributing about 60% of world production. Major producing states are Uttar Pradesh, Bihar, and Andhra Pradesh. Okra is a warm-season vegetable rich in fiber and vitamins.
The _______ crop is known as the 'Wonder Crop' due to its nutritional value.
- Soybean
- Quinoa
- Amaranth
- All of these
Answer: All of these
Soybean, quinoa, and amaranth are all called 'Wonder Crops' due to their high protein content and nutritional benefits. Soybean is widely grown in India (Madhya Pradesh, Maharashtra). These crops support food security and sustainable agriculture.
Which is the world's largest volcanic crater?
- Crater Lake
- Ngorongoro
- Yellowstone Caldera
- Toba
Answer: Toba
Lake Toba in Indonesia is the world's largest volcanic crater (caldera), formed by a super-eruption about 74,000 years ago. The caldera is 100 km long and 30 km wide. The eruption is believed to have caused a global volcanic winter.
The _______ is the largest lake in Rajasthan.
- Pushkar Lake
- Sambhar Lake
- Pichola Lake
- Fateh Sagar
Answer: Sambhar Lake
Sambhar Lake in Rajasthan is India's largest inland saltwater lake (230 sq km). It is a Ramsar site and a major source of salt production. The lake is an important wintering ground for flamingos and other migratory birds.
The Repetti discontinuity is within the Earth's mantle.
- True
- False
Answer: True
The Repetti discontinuity, at about 660 km depth, marks a boundary within the Earth's mantle separating the upper and lower mantle. It is characterized by changes in mineral structure due to increasing pressure. Named after seismologist L. Repetti.
Which Indian state is the largest producer of apples?
- Himachal Pradesh
- Jammu & Kashmir
- Uttarakhand
- Sikkim
Answer: Jammu & Kashmir
Jammu & Kashmir is the largest producer of apples in India, contributing about 75% of national production. Major apple-growing regions include Shopian, Kulgam, and Anantnag. Apples are a key horticulture crop supporting rural livelihoods.
Which river is known as the 'River of Gold'?
- Amazon
- Niger
- Congo
- Zambezi
Answer: Niger
The Niger River is called the 'River of Gold' due to the historical gold trade along its banks in West Africa. It flows through Guinea, Mali, Niger, and Nigeria before emptying into the Gulf of Guinea. It is the third-longest river in Africa.
The Garo, Khasi, and Jaintia Hills are part of the Eastern Himalayas.
- True
- False
Answer: False
The Garo, Khasi, and Jaintia Hills are part of the Meghalaya Plateau, which is an extension of the Peninsular Plateau, not the Eastern Himalayas. These hills receive some of the world's highest rainfall and are known for living root bridges.
Which type of forest is found in the Himalayas above 3,600 meters?
- Tropical Evergreen
- Montane
- Alpine
- Subtropical
Answer: Alpine
Alpine forests are found in the Himalayas above 3,600 meters, characterized by dwarf trees, shrubs, and meadows. Vegetation includes juniper, rhododendron, and birch. These forests are sensitive to climate change and support unique biodiversity.
The _______ is the largest country in Europe by area.
- Ukraine
- France
- Russia
- Spain
Answer: Russia
Russia is the largest country in Europe by area, though most of its territory lies in Asia. The European part of Russia includes major cities like Moscow and St. Petersburg. Russia spans 11 time zones and borders 14 countries.
Which is India's largest hydroelectric project by capacity?
- Tehri
- Koyna
- Subansiri Lower
- Sardar Sarovar
Answer: Subansiri Lower
Subansiri Lower Hydroelectric Project in Arunachal Pradesh (under construction) will be India's largest with 2,000 MW capacity. Currently, Koyna (1,960 MW) is the largest operational. Hydro power is renewable and crucial for India's energy mix.
The _______ is the largest glacier in India.
- Siachen
- Gangotri
- Yamunotri
- Pindari
Answer: Siachen
Siachen Glacier in Ladakh is the largest glacier in India (76 km long) and the world's highest battlefield. It is the source of the Nubra River. The glacier is strategically important due to its location near the Line of Control with Pakistan.