Environmental Science - General Knowledge Questions and Answers - in Hindi

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Which of the following rock types would most likely be the best oil reservoir?


इनमें से किस प्रकार की चट्टान में तेल भंडार होने की सर्वाधिक संभावना होती है?

A)

granite

/

ग्रेनाइट


B)

shale

/

शैल


C)

sandstone

/

बलुआ पत्थर


D)

salt

/

साल्ट



Correct Answer :

sandstone

/

बलुआ पत्थर

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A variety of different bacteria and yeasts live on human skin. Together they are considered to be a/an?


विभिन्न प्रकार के बैक्टीरिया और खमीर मानव त्वचा पर रहते हैं। साथ में उन्हें माना जाता है?

A)

Ecosystem


B)

Population


C)

Community


D)

Trophic level



Correct Answer :

Community

The method of rainwater harvesting which can be adopted by individual house owners is?


वर्षा जल संचयन की विधि है जो व्यक्ति के घर के मालिकों द्वारा अपनाया जा सकता है?

A)

Construction of recharge trenches

/

रिचार्ज खाइयों का निर्माण


B)

Onchannel storage of water

/

पानी का सहचैनल के भंडारण


C)

Harvesting new water channel

/

नए जल चैनलों को संचयन


D)

Rooftop rainwater harvesting

/

रूफ टॉप वर्षा जल संचयन



Correct Answer :

Rooftop rainwater harvesting

/

रूफ टॉप वर्षा जल संचयन


Explanation :

Roof-top rainwater harvesting (RRH) involves diverting and recharging (or) storing of the rainwater that falls on the roof of a house.
RRH is a common practice implemented in individual houses as well as apartment complexes for recharging of ground water. In such cases, harvested water is directed into a recharge pit which collects and slowly recharges into the groundwater storage / aquifer in that area.

Fuel cost is zero in which kind of energy?


ईंधन की लागत इनमें से किस प्रकार की ऊर्जा में शून्य होती हैं?

A)

Wind energy

/

पवन ऊर्जा


B)

Coal energy

/

कोयले से उत्पन्न की जाने वाली ऊर्जा


C)

Nuclear Energy

/

परमाणु ऊर्जा


D)

Tidal energy

/

ज्वारीय ऊर्जा



Correct Answer :

Wind energy

/

पवन ऊर्जा


Explanation :

Wind, Solar Are The cheapest sources of power generation.

Coal based thermal power plant works on which principal?


कोयला आधारित ताप विद्युत संयंत्र निम्नलिखित में से किस सिद्धांत पर आधारित है?

A)

Modified Rankine Cycle

/

संशोधित रेनकाइन चक्र


B)

Threshold frequency

/

थ्रेसहोल्ड आवृत्ति


C)

Gibbs free energy

/

गिब्बस मुक्त ऊर्जा


D)

Entropy

/

एन्ट्रापी



Correct Answer :

Modified Rankine Cycle

/

संशोधित रेनकाइन चक्र


Explanation :

Rankine cycle is a mechanical cycle which is used to convert the pressure energy of steam into mechanical energy using turbines.A modified Rankine cycle is used to increase the efficiency of the same Rankine cycle by either reheat or using regenerative cycle.

A chemical reaction triggered by ____ transforms organic material into hydrocarbons?


_____द्वारा होने वाली रासायनिक प्रतिक्रिया द्वारा जैविक सामग्री को हाइड्रोकार्बन में परिवर्तित किया जाता है?

A)

solar energy

/

सौर ऊर्जा


B)

hydroelectric

/

पनबिजली


C)

elevated temperatures

/

संवर्धित तापमान


D)

decomposition

/

अपघटन



Correct Answer :

elevated temperatures

/

संवर्धित तापमान

Energy resources derived from natural organic materials is called ?


प्राकृतिक जैविक सामग्रियों से प्राप्त किए जाने वाले ऊर्जा स्त्रोत को क्या कहा जाता है?

A)

Geothermal energy sources

/

भूतापीय ऊर्जा स्त्रोत


B)

Fossil fuels

/

जीवाश्म ईंधन


C)

Biomass

/

बायोमॉस


D)

None of the above

/

उपरोक्त में से कोई नहीं



Correct Answer :

Fossil fuels

/

जीवाश्म ईंधन

The world has the least amount of which of the following fuel types?


दुनिया में निम्नलिखित ईंधन स्त्रोत में से किस ईंधन की मात्रा सबसे कम हैं?

A)

Oil

/

तेल


B)

Coal

/

कोयला


C)

Uranium

/

यूरेनियम


D)

There are roughly equal amounts of each of these fuels

/

औसतन सभी ईंधन की बराबर मात्रा में है



Correct Answer :

Oil

/

तेल

The percentage of total world’s precipitation, lost to the atmosphere through evaporation, is approximately?


दुनिया में कुल वषर्ण का प्रतिशत जो कि वाष्पीकरण से वायमुंडल में नष्ट हो जाता हैं, वह लगभग कितने प्रतिशत है?

A)

57%


B)

7%


C)

37%


D)

43%



Correct Answer :

57%

The main constituent of LPG is?


एलपीजी का मुख्य संगघट क्या होता है?

A)

Liquid methane

/

तरल मीथेन


B)

Liquid butane

/

तरल बुटेन


C)

Liquid hydrogen

/

तरल हाइट्रोजन


D)

Liquid ethane

/

तरल ईथेन



Correct Answer :

Liquid butane

/

तरल बुटेन

Nitrogen fixation is accomplished by?


नाइट्रोजन स्थिरीकरण किसके द्वारा पूरा किया जाता है?

A)

Bacteria in the atmosphere

/

वातावरण में जीवाणु


B)

Bacteria in the soil

/

मिट्टी में बैक्टीरिया


C)

Plants

/

पौधे


D)

Fungi

/

कवक



Correct Answer :

Bacteria in the soil

/

मिट्टी में बैक्टीरिया

Pollination by Birds is known as?


पक्षी द्वारा परागण को क्या कहते है?

A)

Autogamy


B)

Entomophilly


C)

Ornithophilly


D)

Marmacophilly



Correct Answer :

Ornithophilly


Explanation :

Ornithophily or bird pollination is the pollination of flowering plants by birds.

The agent moving the pollen, whether it is moths, bees, bats, wind or birds are called the “pollinator” and the plant providing the pollen is called the “pollenizer”. The term biotic pollination is used when pollination is aided by a pollinator. When this is done by birds, the term used is Ornithophily.

Which is an example of fossil fuel?


इनमें से क्या जीवाश्म ईंधन का उदाहरण है?

A)

coal

/

कोयला


B)

methane

/

मिथेन


C)

natural gas

/

प्राकृतिक गैस


D)

All the above

/

उपरोक्त सभी



Correct Answer :

All the above

/

उपरोक्त सभी

In study of satellite imageries GIS stands for ?


सेटेलाइट इमेजरीज़ में जीआईएस के क्या मायने होते हैं?

A)

Geographical Information System

/

भौगोलिक सूचना प्रणाली


B)

Geographical Integrated System

/

भौगोलिक एकीकृत प्रणाली


C)

General Integrated System

/

सामान्य एकीकृत प्रणाली


D)

Geological Integrated system

/

भूगर्भीय एकीकृत प्रणाली



Correct Answer :

Geographical Information System

/

भौगोलिक सूचना प्रणाली

A fuel cell, in order to produce electricity, burns?


एक इंधन कोशिका, बिजली बनाने के लिए निम्नलिखित में से किसका प्रजल्वन करती है?

A)

Helium

/

हीलियम


B)

Nitrogen

/

नाइट्रोजन


C)

Hydrogen

/

हाइड्रोजन


D)

Boron

/

बोरान



Correct Answer :

Hydrogen

/

हाइड्रोजन

Blue whale is placed under?


नीली व्हेल को किसके अंतगर्त रखा गया है?

A)

endangered

/

लुप्तप्राय


B)

critically endangered

/

बहुत अधिक खतरा


C)

rare

/

विरल


D)

extinct

/

विलुप्त



Correct Answer :

endangered

The most important reason for decrease in biodiversity is ?


जैव विविधता मे कमी का सर्वाधिक महत्वपूर्ण कारण क्या है?

A)

habitat pollution

/

निवास प्रदूषण


B)

introduction of exotic species

/

अनोशी प्रजातियों को पेश करना


C)

deforestation

/

वनों की कटाई


D)

habitat destruction

/

निवास को नष्ट किया जाना



Correct Answer :

habitat destruction

/

निवास को नष्ट किया जाना

Latest Updates

Fractions

First we increased the denominator of a positive fraction by 3 and then decrease it by 5.The sum of the resulting fractions proves to be equal to 2/3. Find the denominator of the fraction if its numerator is 2?

Simplification

If we divide a two digit number by the sum of its digits we get 4 as a quotient and 3 as a remainder. Now if we divide that two digit number by the product of its digits we get 3 as a quotient and 5 as a remainder . Find the two digit number?

Fractions

The denominators of an irreducible fraction is greater than the numerator by 2.If we reduce the numerator of the reciprocal fraction by 3 and subtract the given fraction from the resulting one,we get 1/15.Find the given fraction?

Simplification

If we add the square of the digit in the tens place of the positive two digit number to the product of the digits of that number we get 52,and if we add the square of the digit in the unit's place to the same product of the digits we get 117.Find the two digit number?

The sum of squares of the digits constituting a positive two digit number is 13, If we subtract 9 from that number we shall get a number written by the same digits in the reverse order. Find the number?

The arithmetic mean of two numbers is smaller by 24 than the larger of the two numbers and the GM of the same numbers exceeds by 12 the smaller of the numbers. Find the numbers?

A number being successively divided by 3,5,8 leaves remainder 1,4,7 respectively. Find the respective remainders if the order of divisors are reversed?

The sum of all possible two digit numbers formed from three different one digit natural numbers when divided by the sum of the original three numbers is equal to?

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Find the HCF and LCM of the polynomial x2-5x+6 and x2-7x+10?

Simplification

When we multiply a certain two digit number by the sum of its digits , 405 is achieved. If we multiply the number written in reverse order of the same digits by the sum of the digits, we get 486. Find the number?

Average

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Numbers

The difference of 1025-7 and 1024+x is divisible by 3. find x=?

A number when divided by the sum of 555 and 445 gives two times their difference as quotient and 30 as remainder . The number is?

The sum of three prime numbers is 100.If one of them exceeds another by 36 then one of the numbers is?

Find the number of zeros in the factorial of the number 18?

If a number is multiplied by 22 and the same number is added to it then we get a number that is half the square of that number. Find the number?

In doing a division of a question with zero remainder,a candidate took 12 as divisor instead of 21.The quotient obtained by him was 35. The correct quotient is?

Fractions

A number when divided by 342 gives a remainder 47.When the same number is divided by 19 what would be the remainder?

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