DAY – 8 : Insta 75 Days Revision Plan-2026 : GEOGRAPHY

Answer:  (b)

Explanation:

The term Footloose Industry refers to a unique category of manufacturing that is not tied to any specific geographic location by the traditional constraints of raw materials or markets. Unlike the iron and steel industry (which must be near coal or iron ore) or the sugar industry (which must be near sugarcane fields), a footloose industry has the freedom to roam or be located in a diverse range of places.

• Option (a) – Incorrect: While these industries often find themselves near urban centers for better connectivity, being predominantly situated there to minimize distribution costs is a feature of market-oriented industries (like bread or newspapers), not the defining characteristic of being footloose.
• Option (b) – Correct: This is the most accurate description. The word indifferent signifies that the industry’s success and cost structure do not fluctuate significantly based on how close it is to raw material sources or a specific market. It depends on component parts that can be easily transported from anywhere.
• Option (c) – Incorrect: While they may enjoy the benefits of agglomeration (shared services), they generally do not require heavy infrastructure (like blast furnaces or massive rail sidings). They often operate in small, clean workshops.
• Option (d) – Incorrect: Footloose industries usually produce high-value, low-volume goods (like electronics or computer chips). Therefore, they require highly skilled/specialized labor rather than cheap, unskilled labor and prefer road/air connectivity over bulk transport hubs (like ore docks).

Answer:  (c)

Explanation:

• Pair 1 is Correct: The Ruhr Region is a world-famous example of a Traditional Large-Scale Industrial Region. Its growth was historically fueled by the proximity of coal mines and iron ore, forming a dense cluster of heavy industry.
• Pair 2 is Correct: Silicon Valley is the quintessential Technopolis. It represents the shift toward high-technology industries that prioritize R&D, venture capital, and proximity to research universities over physical raw materials.
• Pair 3 is Correct: Toyota City is a monotown or specialized industrial center. It is a prime example of a region where a single industry (Automotive) and a single firm define the entire local economic landscape.
• Pair 4 is Incorrect: The Donbas Region is actually a traditional heavy industrial region known for its vast coal reserves and metallurgy (Iron and Steel). It is the opposite of a Footloose or IT region. Footloose electronics would be better associated with regions like the Silicon Plateau (Bangalore) or Silicon Glen (Scotland).

Answer:  (c)

Explanation:

• Statement 1 is correct: Phase 1 (1901–1921) is often referred to as the Period of Stagnant Population. During this time, both birth rates and death rates were very high (approximately 40 per thousand), neutralizing each other and resulting in a very low or stagnant growth rate. This stage is representative of the Primitive Demographic Transition Stage.
• Statement 2 is correct: The year 1921 is unique in Indian demographic history because it is the only census year to record a negative growth rate (an absolute decline in numbers). Before 1921, the population was fluctuating and stagnant; after 1921, it began to grow steadily. Therefore, it is famously known as the Year of the Great Demographic Divide.

Answer:  (c)

Explanations:

The Caspian Sea is the world’s largest inland body of water, often classified as the world’s largest lake or a full-fledged sea.

Bordering Nations (Littoral States):

1. Kazakhstan: Northeast
2. Turkmenistan: Southeast
3. Iran: South
4. Azerbaijan: West
5. Russia: Northwest

Explanation for Option (C): Uzbekistan is a doubly landlocked country. While it is located in Central Asia, it is separated from the Caspian Sea by the territories of Kazakhstan and Turkmenistan.

Answer:  (b)

Explanation:

• Statement I is correct: The Eye is the most unique feature of a mature tropical cyclone. It is a central region of relative calm (low wind speeds) and clear skies. This is caused by subsiding (sinking) air from the upper atmosphere, which warms up adiabatically and prevents cloud formation.
• Statement II is correct: A tropical cyclone is essentially a massive low-pressure system. At the surface, air intensely converges toward this center and ascends rapidly, particularly at the Eye Wall (the region surrounding the eye), where the strongest winds and heaviest rainfall occur.

II describes the general mechanism of a cyclone (convergence and ascent). However, the Eye described in Statement I is characterized by subsidence (descent), which is actually the opposite of the general ascending motion of the storm. The eye forms due to a complex balance of centrifugal forces and the conservation of angular momentum, leading to air sinking in the center rather than rising. Therefore, while both are true, the rising air of the storm does not explain the sinking air of the eye.

Answer:  (c)

Explanation:

• Option (a) – Incorrect: While Agglomerated is often used as a descriptive synonym for being gathered together, in rigorous geographical terminology, it usually refers to the expansion of urban areas or the physical merging of multiple distinct settlements (Urban Agglomeration). It is a scale-up of the nucleated concept rather than the basic rural pattern.
• Option (b) – Incorrect: Semi-compact (or semi-clustered) settlements are a transitional form where houses are gathered but also show signs of fragmentation or pockets of dwellings, often due to social or ethnic segregation within a village.
• Option (c) – Correct: Nucleated is the standard term. The houses are built in a compact manner around a central nucleus. This nucleus can be a source of water (well/pond), a place of worship, or a market.
• Option (d) – Incorrect: Concentric refers to a specific model of urban land use (developed by E.W. Burgess) where a city grows outward in rings from a Central Business District. It describes internal city structure rather than the fundamental arrangement of houses in a rural or basic settlement.

Answer:  (a)

Explanation:

• Pair 1 is Incorrect: Kolar is historically famous for Gold (Kolar Gold Fields), not copper. Most of India’s copper is found in the Khetri belt (Rajasthan) or Singhbhum (Jharkhand).
• Pair 2 is Correct: Balaghat is one of the most significant mining districts in India, accounting for nearly 80% of India’s Manganese It also hosts the Bharveli mine, the largest underground manganese mine in Asia.
• Pair 3 is Incorrect: While Koraput is a major mining district in Odisha, it is primarily known for Bauxite (the ore for Aluminum), notably the Panchpatmali deposits. Major iron ore belts in Odisha are located in the Mayurbhanj and Keonjhar districts.

Answer:  (b)

Explanation:

• Statement I is correct: Air masses are indeed classified using a two-tier system. The first tier is based on moisture content (Maritime ‘m’ for moist/oceanic and Continental ‘c’ for dry/land). The second tier is based on the latitude/temperature of the source region (Tropical ‘T’ for warm, Polar ‘P’ for cold, Arctic ‘A’ for extremely cold, and Equatorial ‘E’).
• Statement II is correct: Tropical (T) air masses originate in the low-latitude belts (typically between the Tropics of Cancer and Capricorn) and are inherently warm due to the high solar insolation received in those regions.
• While Statement II provides a specific example of one type of air mass (Tropical), it does not explain the logic of the classification system described in Statement I. Statement I is a definition of the methodology of classification, whereas Statement II is a description of a category within that system. An explanatory statement for Statement I would need to describe why moisture and latitude are the chosen metrics (e.g., due to the surface characteristics of source regions).

Answer:   (c)

Explanation:

• Statement 1 is correct: The scheme targets first-time employees in the formal sector. Eligibility is capped at a monthly salary of ₹1 lakh for new EPFO-registered employees. They receive a one-month wage incentive (up to ₹15,000) paid in two instalments.
• Statement 2 is correct: The scheme incentivizes additional employment. EPFO-registered employers receive monthly wage-based incentives (ranging from ₹1,000 to ₹3,000) for every new hire, provided they increase their total employee strength beyond a specific threshold (e.g., +2 for small firms, +5 for firms with 50+ staff).
• Statement 3 is incorrect: The incentive period is not uniform. While the standard tenure for the incentive is 2 years for most sectors, it is specifically extended to 4 years for the manufacturing sector to promote industrial growth and labour-intensive manufacturing.

Answer:   (a)

Explanation:

Quantum noise is a fundamental phenomenon in quantum mechanics that describes the random fluctuations and disturbances affecting quantum states. It has long been considered the Archilles’ heel of quantum computing.

• Option (a) – Correct: Quantum systems are extremely fragile. Quantum noise arises when these systems interact with their surrounding environment (thermal or electromagnetic). This interaction leads to decoherence, where the entanglement (the link between particles) is broken, causing the quantum state to collapse and lose information.
• Option (b) – Incorrect: While quantum computers may require cooling systems that make sound, Quantum Noise is a subatomic, electromagnetic, or thermal phenomenon, not an acoustic or mechanical vibration.
• Option (c) – Incorrect: Quantum noise is generally an unavoidable and random disturbance, not a deliberate signal. While scientists are now learning to use it constructively, its nature remains random and environment-induced.
• Option (d) – Incorrect: While gravity does affect all particles, quantum noise is primarily driven by the Heisenberg Uncertainty Principle and environmental interactions (like heat or stray photons), rather than the gravitational pull of massive objects.

Answer: (b)

Explanation:

Statement 1:
When two persons move towards each other, the distances covered are proportional to their speeds.

Speed ratio = 3:2
Total distance = 200 km

Distance covered by P:

3/5 × 200 = 120 km

Hence, Statement 1 is correct.

Statement 2:
Meeting time depends on the sum of their speeds.

Let speeds be:

P = 3x
Q = 2x

Original relative speed = 5x

After change:

P increases by 20% → 3x × 1.2 = 3.6x
Q decreases by 20% → 2x × 0.8 = 1.6x

New relative speed = 3.6x + 1.6x = 5.2x

Since the relative speed changes, the meeting time will also change.

Hence, Statement 2 is incorrect.

Statement 3:
When two persons move in the same direction,

Overtaking time = Initial distance ÷ Difference in speeds

Thus, the overtaking time depends on the initial distance.

Hence, Statement 3 is correct.

Therefore, Statements 1 and 3 are correct.

Answer: (a)

Explanation:

When equal distances are covered at different speeds, the average speed is given by:

Average speed = (2 × Speed₁ × Speed₂) ÷ (Speed₁ + Speed₂)

Using speeds 30 km/h and 60 km/h:

Average speed = (2 × 30 × 60) ÷ (30 + 60)
= 3600 ÷ 90
= 40 km/h

Thus Statement 1 alone is sufficient to determine the average speed.

Statement 2 alone is not sufficient because although we know that traveling at 45 km/h would make the journey 10 minutes shorter, we do not know the actual distance or the original travel time. Without either of these, the average speed cannot be uniquely determined.

Therefore, Statement 1 alone is sufficient.

Answer: (c)

Explanation:

Upstream speed = V − S
Downstream speed = V + S

Statement 1:
For equal upstream and downstream distances, the average speed is always less than the still-water speed because the current reduces the effective average speed.

Hence, Statement 1 is correct.

Statement 2:
Upstream speed initially = V − S

If boat speed doubles:

New upstream speed = 2V − S

This does not necessarily double the upstream speed, so the time will not become exactly half.

Hence, Statement 2 is incorrect.

Statement 3:
If V = S,

Upstream speed = V − S = 0

Thus the boat cannot move upstream.

Hence, Statement 3 is correct.

Therefore, Statements 1 and 3 are correct.

Answer: (b)

Explanation:

Downstream speed = 10 + 2 = 12 km/h
Upstream speed = 10 − 2 = 8 km/h

Let the one-way distance be d km.

Time downstream = d / 12
Time upstream = d / 8

Total time:

d/12 + d/8 = 5

Taking LCM = 24

2d + 3d = 120
5d = 120

d = 24 km

Answer: (b)

Explanation:

The passage explains that although modern systems provide many choices, this abundance can lead to decision paralysis. Individuals often rely on popular or safe options instead of carefully evaluating what suits them best.

Thus, the key inference is that more choices do not necessarily result in better decisions.

Therefore, option (b) is the most logical inference.