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Laterite soil is rich in iron and aluminum oxides.
- True
- False
Answer: True
Laterite soil is rich in iron and aluminum oxides, giving it a reddish color. It forms in hot, wet tropical areas with heavy rainfall that leaches silica. Found in Kerala, Karnataka, Tamil Nadu, and Odisha. It is suitable for plantation crops like tea, coffee, and cashew.
The troposphere contains about 75% of the atmosphere's mass.
- True
- False
Answer: True
The troposphere, the lowest layer of the atmosphere (up to 8-15 km), contains about 75-80% of the atmosphere's mass and almost all water vapor. All weather phenomena occur in this layer. Temperature decreases with altitude at about 6.5°C per km.
The Equator passes through 13 countries.
- True
- False
Answer: True
The Equator passes through 13 countries: Ecuador, Colombia, Brazil, São Tomé & Príncipe, Gabon, Republic of Congo, Democratic Republic of Congo, Uganda, Kenya, Somalia, Maldives, Indonesia, and Kiribati. It divides Earth into Northern and Southern Hemispheres.
The retreating monsoon season in India occurs during October-November.
- True
- False
Answer: True
The retreating monsoon (October-November) occurs when the Southwest Monsoon withdraws from India. This season brings rainfall to Tamil Nadu, Andhra Pradesh, and Karnataka. It is also known as the Northeast Monsoon in these regions.
The Prime Meridian passes through Greenwich, London.
- True
- False
Answer: True
The Prime Meridian (0° longitude) passes through the Royal Observatory in Greenwich, London. It serves as the reference line for Greenwich Mean Time (GMT) and divides the Earth into Eastern and Western Hemispheres.
The Narmada River flows westward into the Arabian Sea.
- True
- False
Answer: True
The Narmada River flows westward through a rift valley between the Vindhya and Satpura ranges, emptying into the Arabian Sea via the Gulf of Khambhat. It is one of the few major Indian rivers flowing west. The Tapi River also flows westward similarly.
The Amazon Rainforest is located primarily in Brazil.
- True
- False
Answer: True
The Amazon Rainforest, the world's largest tropical rainforest, is located primarily in Brazil (about 60%). It also extends into Peru, Colombia, and other South American countries. It is often called the 'lungs of the Earth' for producing 20% of the world's oxygen.
The Khyber Pass connects India and Afghanistan.
- True
- False
Answer: False
The Khyber Pass connects Pakistan and Afghanistan, not India. It is a strategically important mountain pass in the Spin Ghar mountains. Historically, it has been a key route for invasions into the Indian subcontinent. India does not share a border with Afghanistan.
India has two island union territories: Andaman & Nicobar and Lakshadweep.
- True
- False
Answer: True
India has two island union territories: Andaman & Nicobar Islands (Bay of Bengal) and Lakshadweep (Arabian Sea). Andaman & Nicobar has 572 islands (38 inhabited), while Lakshadweep has 36 islands (10 inhabited). Both are important for biodiversity and strategic location.
The Earth's rotation causes day and night.
- True
- False
Answer: True
The Earth's rotation on its axis (once every 24 hours) causes day and night. The side facing the Sun experiences daylight, while the opposite side experiences night. The tilt of Earth's axis (23.5°) causes seasons as it orbits the Sun.
The Nilgiri Hills are part of the Eastern Ghats.
- True
- False
Answer: False
The Nilgiri Hills are part of the Western Ghats, not the Eastern Ghats. They are located at the junction of Tamil Nadu, Kerala, and Karnataka. The name 'Nilgiri' means 'Blue Mountains' due to the blue flowers of the Kurinji plant that blooms once every 12 years.
Australia is both a country and a continent.
- True
- False
Answer: True
Australia is both a country and a continent. It is the smallest continent and the sixth-largest country by area. It is surrounded by the Indian and Pacific Oceans. The continent of Australia also includes Papua New Guinea and parts of Indonesia in some definitions.
Wheat is primarily grown as a Rabi crop in India.
- True
- False
Answer: True
Wheat is primarily grown as a Rabi crop in India, sown in October-November and harvested in March-April. It requires cool growing season and bright sunshine at ripening. Major wheat-producing states are Uttar Pradesh, Punjab, Madhya Pradesh, and Haryana.
The Deccan Plateau is located south of the Narmada River.
- True
- False
Answer: True
The Deccan Plateau is a large triangular plateau located south of the Narmada River, bounded by the Western and Eastern Ghats. It covers most of South India and is composed of volcanic basalt rock. It is one of the oldest landforms on Earth.
India is the largest producer of pulses in the world.
- True
- False
Answer: True
India is the largest producer, consumer, and importer of pulses in the world. Major pulses grown include chickpea (chana), pigeon pea (arhar), and lentil (masoor). Pulses are crucial for protein intake in vegetarian diets and fix nitrogen in soil, improving fertility.
The Andaman and Nicobar Islands are located in the Bay of Bengal.
- True
- False
Answer: True
The Andaman and Nicobar Islands, a union territory of India, are located in the Bay of Bengal. They consist of 572 islands, of which about 38 are inhabited. The islands are of volcanic origin and are separated from the Indian mainland by the Ten Degree Channel.
The Northeast Monsoon brings rainfall to Tamil Nadu.
- True
- False
Answer: True
The Northeast Monsoon (October-December) brings rainfall to Tamil Nadu, Andhra Pradesh, and parts of Karnataka. Unlike most of India which receives rain from Southwest Monsoon, Tamil Nadu gets about 50% of its annual rainfall from the Northeast Monsoon.
The Thar Desert is located entirely within India.
- True
- False
Answer: False
The Thar Desert, also known as the Great Indian Desert, extends into both India and Pakistan. About 85% of the desert lies in India (primarily Rajasthan), while the remaining 15% is in Pakistan's Punjab and Sindh provinces. It covers about 200,000 sq km.
India shares a land border with Afghanistan.
- True
- False
Answer: False
India does not share a land border with Afghanistan. India shares land borders with Pakistan, China, Nepal, Bhutan, Bangladesh, and Myanmar. Afghanistan is separated from India by Pakistan (via the Wakhan Corridor). However, India and Afghanistan share strategic and cultural ties.
The Equator passes through India.
- True
- False
Answer: False
The Equator does not pass through India. India lies entirely in the Northern Hemisphere, between 8°4'N and 37°6'N latitudes. The Tropic of Cancer (23.5°N) passes through central India, dividing it into tropical and subtropical zones.