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population ratio MCQ Questions for Class 12

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

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10 questions tagged with population ratio.

Question 1/10 Expert Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 21

यदि दो regions की density ratio 7:6 और population ratio 14:9 है, तो area ratio क्या होगा?

If two regions have a density ratio of 7:6 and a population ratio of 14:9, what is their area ratio?

Explanation opens after your attempt
Correct Answer

A. 4:3

Explanation

Simple Explanation

क्योंकि \(Area=Population/Density\), area ratio होगा \(\frac{14}{7}:\frac{9}{6}=2:1.5=4:3\)। इसलिए पहला विकल्प सही है। केवल population ratio को area ratio मानना गलत होगा क्योंकि density difference भी denominator को बदलता है। परीक्षा में area ratio निकालने के लिए population ratio को density ratio से divide करें और फिर simplify करें। / Since \(Area=Population/Density\), the area ratio is \(\frac{14}{7}:\frac{9}{6}=2:1.5=4:3\). Therefore, the first option is correct. Treating the population ratio as the area ratio would be wrong because density differences also affect the denominator. In examinations, divide the population ratio by the density ratio and simplify to obtain area ratio.

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Question 2/10 Expert Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 21

दो regions की population ratio 8:5 और area ratio 4:3 है। उनकी density ratio क्या होगी?

Two regions have a population ratio of 8:5 and an area ratio of 4:3. What is their density ratio?

Explanation opens after your attempt
Correct Answer

A. 6:5

Explanation

Simple Explanation

Density ratio \(\frac{P_1/A_1}{P_2/A_2}\) से निकलेगा। यहां \(\frac{8/4}{5/3}=2\times\frac{3}{5}=\frac{6}{5}\)। इसलिए density ratio 6:5 है और पहला विकल्प सही है। Population ratio को सीधे density ratio मानना गलत होगा क्योंकि area ratio भी calculation को प्रभावित करता है। परीक्षा में density ratio के लिए population ratio को area ratio से divide करें। / Density ratio is found using \(\frac{P_1/A_1}{P_2/A_2}\). Here \(\frac{8/4}{5/3}=2\times\frac{3}{5}=\frac{6}{5}\). Therefore, the density ratio is 6:5 and the first option is correct. Using the population ratio directly would be incorrect because the area ratio also matters. In examinations, divide the population ratio by the area ratio to obtain density ratio.

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Question 3/10 Expert Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 19

यदि दो regions की density ratio 5:4 और area ratio 6:5 है, तो उनकी population ratio क्या होगी?

If two regions have a density ratio of 5:4 and an area ratio of 6:5, what is their population ratio?

Explanation opens after your attempt
Correct Answer

C. 3:2

Explanation

Simple Explanation

Population \(= Density \times Area\) है। इसलिए population ratio \(5 \times 6 : 4 \times 5 = 30:20 = 3:2\) होगा। अतः तीसरा विकल्प सही है। केवल density ratio या area ratio को population ratio मानना incorrect है क्योंकि population दोनों का product है। परीक्षा में ऐसे questions के लिए \(P=D \times A\) relation सबसे सीधा तरीका देता है। / Population equals density multiplied by area. Therefore, the population ratio is \(5 \times 6 : 4 \times 5 = 30:20 = 3:2\). Thus the third option is correct. Treating either the density ratio or the area ratio alone as the population ratio would be incorrect because population depends on their product. In examinations, \(P=D \times A\) provides the most direct method for such ratio questions.

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Question 4/10 Expert Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 19

दो regions की population ratio 7:5 और area ratio 14:15 है। उनकी population density ratio क्या होगी?

Two regions have a population ratio of 7:5 and an area ratio of 14:15. What is their population-density ratio?

Explanation opens after your attempt
Correct Answer

B. 3:2

Explanation

Simple Explanation

Density ratio \(\frac{P_1/A_1}{P_2/A_2}\) से निकलेगा। यहां \(\frac{7/14}{5/15}=\frac{1/2}{1/3}=\frac{3}{2}\)। इसलिए density ratio 3:2 है और दूसरा विकल्प सही है। Population ratio 7:5 को सीधे density ratio मानना गलत होगा क्योंकि area ratio भी density को प्रभावित करता है। परीक्षा में density ratio के लिए population ratio को area ratio से divide करना चाहिए। / Density ratio is obtained from \(\frac{P_1/A_1}{P_2/A_2}\). Here \(\frac{7/14}{5/15}=\frac{1/2}{1/3}=\frac{3}{2}\). Therefore, the density ratio is 3:2 and the second option is correct. Using the population ratio 7:5 directly as the density ratio would be wrong because area differences also affect density. In examinations, divide the population ratio by the area ratio to obtain the density ratio.

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Question 5/10 Hard Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 20

यदि दो regions की density ratio 3:2 और population ratio 9:4 है, तो उनके area ratio का सही मान क्या होगा?

If two regions have a density ratio of 3:2 and a population ratio of 9:4, what is the correct ratio of their areas?

Explanation opens after your attempt
Correct Answer

B. 3:2

Explanation

Simple Explanation

क्योंकि \(Density = Population/Area\), इसलिए \(Area = Population/Density\)। Area ratio होगा \(\frac{9}{3}:\frac{4}{2} = 3:2\)। इसलिए दूसरा विकल्प सही है। केवल population ratio 9:4 को area ratio मानना गलत होगा, क्योंकि density differences भी account करने होते हैं। परीक्षा में area ratio निकालने के लिए population ratio को density ratio से divide करें। / Since \(Density = Population/Area\), area equals population divided by density. The area ratio is therefore \(\frac{9}{3}:\frac{4}{2} = 3:2\). Hence the second option is correct. Using the population ratio 9:4 directly as the area ratio would be wrong because density differences must also be considered. To obtain area ratio, divide the population ratio by the density ratio.

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Question 6/10 Hard Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 20

यदि दो regions की population ratio 5:4 और area ratio 2:3 है, तो उनकी population density ratio क्या होगी?

If two regions have a population ratio of 5:4 and an area ratio of 2:3, what is their population-density ratio?

Explanation opens after your attempt
Correct Answer

A. 15:8

Explanation

Simple Explanation

Density ratio के लिए \(\frac{P_1/A_1}{P_2/A_2}\) प्रयोग करते हैं। Given ratios के अनुसार \(\frac{5/2}{4/3} = \frac{5}{2} \times \frac{3}{4} = \frac{15}{8}\)। इसलिए density ratio 15:8 है और पहला विकल्प सही है। केवल population ratio 5:4 देखना पर्याप्त नहीं है, क्योंकि area ratio भी density को बदलता है। परीक्षा में density ratio के लिए population ratio को area ratio से divide करें। / For density ratio, use \(\frac{P_1/A_1}{P_2/A_2}\). With the given ratios, \(\frac{5/2}{4/3} = \frac{5}{2} \times \frac{3}{4} = \frac{15}{8}\). Therefore, the density ratio is 15:8 and the first option is correct. Looking only at the population ratio of 5:4 would be insufficient because the area ratio also affects density. Divide the population ratio by the area ratio.

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Question 7/10 Medium Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 21

यदि two regions की population ratio 3:2 और density ratio 6:5 हो, तो area ratio क्या होगा?

If two regions have a population ratio of 3:2 and a density ratio of 6:5, what is their area ratio?

Explanation opens after your attempt
Correct Answer

A. 5:4

Explanation

Simple Explanation

Density \(D=P/A\) है, इसलिए area ratio \(A_1:A_2 = \frac{P_1}{D_1}:\frac{P_2}{D_2}\)। Given ratios से \(\frac{3}{6}:\frac{2}{5} = \frac{1}{2}:\frac{2}{5} = 5:4\)। इसलिए पहला विकल्प सही है। परीक्षा में area ratio निकालने के लिए population ratio को density ratio से divide करें। / Since \(D=P/A\), area ratio is \(A_1:A_2 = \frac{P_1}{D_1}:\frac{P_2}{D_2}\). Using the given ratios, \(\frac{3}{6}:\frac{2}{5} = \frac{1}{2}:\frac{2}{5} = 5:4\). Therefore, the first option is correct. In examinations, obtain area ratio by dividing population ratio by density ratio.

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Question 8/10 Medium Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 21

यदि two regions की population ratio 2:3 और area ratio 1:2 हो, तो उनकी density ratio क्या होगी?

If two regions have a population ratio of 2:3 and an area ratio of 1:2, what is their density ratio?

Explanation opens after your attempt
Correct Answer

C. 4:3

Explanation

Simple Explanation

Density ratio \(\frac{P_1/A_1}{P_2/A_2}\) से निकलेगा। Given ratios के अनुसार \(\frac{2/1}{3/2} = \frac{4}{3}\)। इसलिए density ratio 4:3 है और तीसरा विकल्प सही है। परीक्षा में ratio questions में population ratio को area ratio से divide करना useful है। / The density ratio is found from \(\frac{P_1/A_1}{P_2/A_2}\). Using the given ratios, \(\frac{2/1}{3/2} = \frac{4}{3}\). Therefore, the density ratio is 4:3 and the third option is correct. In examinations, for ratio questions, divide the population ratio by the area ratio.

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Question 9/10 Medium Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 19

यदि किसी country की total population कम है लेकिन area बहुत ही छोटा है, तो उसकी density कैसी हो सकती है?

If a country has a small total population but an extremely small area, what can its density be like?

Explanation opens after your attempt
Correct Answer

C. यह high हो सकती हैIt can be high

Explanation

Simple Explanation

Population density total population alone से तय नहीं होती; area भी equally important है। यदि population relatively small हो लेकिन land area उससे भी अधिक छोटा हो तो population-to-area ratio high हो सकता है। इसलिए तीसरा विकल्प सही है। परीक्षा में total population और density को अलग concepts मानना जरूरी है। / Population density is not determined by total population alone; area is equally important. If population is relatively small but land area is even smaller, the population-to-area ratio can still be high. Therefore, the third option is correct. In examinations, it is essential to distinguish total population from population density.

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Question 10/10 Easy Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 20

किस statement से low population density सबसे अच्छी तरह समझ आती है?

Which statement best explains low population density?

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Correct Answer

A. कम लोग बड़े क्षेत्र में फैले होंFew people are spread over a large area

Explanation

Simple Explanation

Low population density तब होती है जब unit area में लोगों की संख्या कम हो। Few people यदि large area में spread हों तो persons per square kilometre कम होंगे। इसलिए पहला विकल्प सही है। Many people within a small area high density का example है। परीक्षा में low density को sparse settlement और low people-to-area ratio से जोड़कर समझें। / Low population density occurs when the number of people per unit area is small. If few people are spread across a large area, persons per square kilometre will be low. Therefore, the first option is correct. Many people living within a small area represents high density. In examinations, connect low density with sparse settlement and a low people-to-area ratio.

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