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national density MCQ Questions for Class 12

national density se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

9 questions tagged with national density.

यदि किसी country की 75 प्रतिशत population 30 प्रतिशत area में रहती है और national density 320 व्यक्ति प्रति वर्ग किलोमीटर है तो उस 30 प्रतिशत area का density कितना होगा?

If 75 percent of a country's population lives in 30 percent of its area and national density is 320 persons per square kilometre what is the density of that 30 percent area?

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Correct Answer

C. 800 व्यक्ति प्रति वर्ग किलोमीटर800 persons per square kilometre

Explanation

Simple Explanation

relative density factor \(\frac{0.75}{0.30}=2.5\) है। national average density 320 है इसलिए selected area density \(320\times2.5=800\) व्यक्ति प्रति वर्ग किलोमीटर होगा। विकल्प C सही है। 960 three-times factor दर्शाता है जो यहाँ लागू नहीं होता। परीक्षा में national density को population-share-to-area-share ratio से multiply करें। / Relative density factor is \(\frac{0.75}{0.30}=2.5\). National average density is 320, so density in the selected area is \(320\times2.5=800\) persons per square kilometre. Therefore option C is correct. A value of 960 would represent a factor of three, which does not apply here. Multiply national density by the population-share-to-area-share ratio.

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यदि किसी country की 80 प्रतिशत population 40 प्रतिशत area में रहती है और national density 260 व्यक्ति प्रति वर्ग किलोमीटर है तो उस 40 प्रतिशत area का density कितना होगा?

If 80 percent of a country's population lives in 40 percent of its area and national density is 260 persons per square kilometre what is the density of that 40 percent area?

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Correct Answer

C. 520 व्यक्ति प्रति वर्ग किलोमीटर520 persons per square kilometre

Explanation

Simple Explanation

relative density factor \(\frac{0.80}{0.40}=2\) है। national average density 260 है इसलिए selected area density \(260\times2=520\) व्यक्ति प्रति वर्ग किलोमीटर होगा। विकल्प C सही है। 480 या 650 population और area shares के exact ratio से मेल नहीं खाते। परीक्षा में subregional density के लिए national density को relative density factor से multiply करें। / Relative density factor is \(\frac{0.80}{0.40}=2\). National average density is 260, so density in the selected area is \(260\times2=520\) persons per square kilometre. Therefore option C is correct. Values such as 480 or 650 do not match the exact population-to-area share ratio. Multiply national density by the relative density factor for such subregional problems.

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यदि किसी country's national density 180 व्यक्ति प्रति वर्ग किलोमीटर है लेकिन 70 प्रतिशत population केवल 30 प्रतिशत land area में रहती है, तो उस inhabited portion की average density national average से कैसी होगी?

If a country's national density is 180 persons per square kilometre but 70 percent of the population lives in only 30 percent of the land area, how does the average density of that portion compare with the national average?

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Correct Answer

C. लगभग 2.33 गुनाAbout 2.33 times

Explanation

Simple Explanation

Selected portion की density relative to national density \(\frac{0.70}{0.30}=2.333...\) times होगी। इसलिए उसकी average density \(180 \times 2.333...\approx 420\) persons per square kilometre होगी। तीसरा विकल्प सही है। यह example दिखाता है कि national average concentrated settlement zones की वास्तविक density को काफी understate कर सकती है। / The density of the selected portion relative to national density is \(\frac{0.70}{0.30}=2.333...\) times. Its average density is therefore about \(180 \times 2.333... \approx 420\) persons per square kilometre. The third option is correct. This example shows how a national average can substantially understate density in concentrated settlement zones.

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यदि किसी country की national arithmetic density low है लेकिन agricultural valleys very dense हैं, तो कौन-सा interpretation सबसे सही है?

If a country's national arithmetic density is low but its agricultural valleys are very dense, which interpretation is most accurate?

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Correct Answer

B. Large sparsely populated areas national average को नीचे खींच सकती हैंLarge sparsely populated areas can lower the national average

Explanation

Simple Explanation

National arithmetic density total population को total national area से divide करती है। यदि large mountains, deserts या forests sparsely populated हों और population valleys में concentrated हो, तो national average low रह सकता है जबकि local valley density high हो। इसलिए दूसरा विकल्प सही है। परीक्षा में average density और internal spatial variation के बीच अंतर समझना जरूरी है। / National arithmetic density divides total population by total national area. If large mountains, deserts, or forests are sparsely populated while population is concentrated in valleys, the national average can remain low even though local valley density is high. Therefore, the second option is correct. In examinations, it is important to distinguish average density from internal spatial variation.

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यदि किसी country की 70 प्रतिशत population 35 प्रतिशत area में रहती है और national density 220 व्यक्ति प्रति वर्ग किलोमीटर है तो उस 35 प्रतिशत area का density कितना होगा?

If 70 percent of a country's population lives in 35 percent of its area and national density is 220 persons per square kilometre what is the density of that 35 percent area?

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Correct Answer

C. 440 व्यक्ति प्रति वर्ग किलोमीटर440 persons per square kilometre

Explanation

Simple Explanation

selected area का relative density factor \(\frac{0.70}{0.35}=2\) है। national average 220 है इसलिए selected area density \(220\times2=440\) व्यक्ति प्रति वर्ग किलोमीटर होगा। इसलिए विकल्प C सही है। 400 population और area shares के exact ratio को ignore करता है। परीक्षा में subregional density निकालने के लिए national density को population share divided by area share से multiply करें। / The relative density factor of the selected area is \(\frac{0.70}{0.35}=2\). National average density is 220, so density of the selected area is \(220\times2=440\) persons per square kilometre. Therefore option C is correct. A value of 400 ignores the exact relationship between population and area shares. Multiply national density by population share divided by area share.

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यदि किसी country में large desert area शामिल हो लेकिन population mainly river valley में रहती हो, तो national arithmetic density क्या कर सकती है?

If a country includes a large desert area but most of its population lives in a river valley, what can national arithmetic density do?

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Correct Answer

B. Internal concentration को understate कर सकती हैIt may understate internal concentration

Explanation

Simple Explanation

National arithmetic density total population को total national area से divide करती है। Large desert area denominator बढ़ाता है, जबकि population river valley में concentrated है। इसलिए national average valley की actual concentration को understate कर सकती है। दूसरा विकल्प सही है। परीक्षा में arithmetic density और spatial concentration के difference को समझें। / National arithmetic density divides total population by total national area. A large desert increases the denominator while population is concentrated in the river valley. The national average may therefore understate the actual concentration in the valley. The second option is correct. In examinations, distinguish arithmetic density from spatial concentration.

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किसी देश का national average density 250 व्यक्ति प्रति वर्ग किलोमीटर है। इससे कौन-सा निष्कर्ष निश्चित रूप से नहीं निकाला जा सकता?

A country's national average density is 250 persons per square kilometre. Which conclusion cannot be made with certainty?

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Correct Answer

B. हर वर्ग किलोमीटर में ठीक 250 लोग रहते हैंExactly 250 people live in every square kilometre

Explanation

Simple Explanation

national average density 250 का अर्थ total population divided by total area का परिणाम 250 है। यह हर individual square kilometre में ठीक 250 लोगों की वास्तविक उपस्थिति नहीं बताता क्योंकि settlement uneven हो सकता है। इसलिए विकल्प B वह निष्कर्ष है जो निश्चित रूप से नहीं निकाला जा सकता। परीक्षा में average density और local density के अंतर को समझना आवश्यक है। / A national average density of 250 means total population divided by total area equals 250. It does not mean every individual square kilometre physically contains exactly 250 people because settlement may be uneven. Therefore option B is the statement that cannot be concluded with certainty. In examinations, distinguish carefully between average national density and actual local population concentration.

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किस कारण national average population density किसी देश के internal settlement pattern को पूरी तरह नहीं दिखाती?

Why does national average population density not fully show a country's internal settlement pattern?

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Correct Answer

C. क्योंकि average dense और sparse क्षेत्रों के differences को छिपा सकती हैBecause an average can hide differences between dense and sparse areas

Explanation

Simple Explanation

National arithmetic density total population को total area से divide करके एक average देती है। यदि population कुछ cities or river valleys में highly concentrated हो और large areas sparsely populated हों तो same national average इन internal contrasts को नहीं दिखाती। इसलिए तीसरा विकल्प सही है। परीक्षा में density को useful summary measure मानें लेकिन इसे exact local distribution का substitute न समझें। / National arithmetic density divides total population by total area and produces an average. If population is highly concentrated in a few cities or river valleys while large areas are sparsely populated, the national average does not reveal these internal contrasts. Therefore, the third option is correct. In examinations, treat density as a useful summary measure but not as a substitute for exact local distribution.

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यदि किसी देश का अधिकांश population कुछ cities में concentrated हो और बाकी land sparsely populated हो, तो national density क्या दर्शाएगी?

If most of a country's population is concentrated in a few cities while the remaining land is sparsely populated, what will national density show?

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Correct Answer

C. पूरे देश के population और area का average ratioThe average ratio of population to area for the whole country

Explanation

Simple Explanation

National population density total national population को total national area से divide करके average ratio देती है। यह individual cities or villages की exact local density नहीं बताती। इसलिए तीसरा विकल्प सही है। यदि population कुछ cities में concentrated हो तो national average internal contrasts को hide कर सकती है। परीक्षा में arithmetic density की यही limitation याद रखें। / National population density gives the average ratio obtained by dividing total national population by total national area. It does not show the exact local density of individual cities or villages. Therefore, the third option is correct. If population is concentrated in a few cities, the national average may hide strong internal contrasts. In examinations, remember this limitation of arithmetic density.

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