Environmental Science

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

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?

A)

Construction of recharge trenches


B)

Onchannel storage of water


C)

Harvesting new water channel


D)

Rooftop rainwater harvesting



Correct Answer :

Rooftop rainwater harvesting


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?

A)

Wind energy


B)

Coal energy


C)

Nuclear Energy


D)

Tidal energy



Correct Answer :

Wind energy


Explanation :

Wind, Solar Are The cheapest sources of power generation.

Coal based thermal power plant works on which principal?

A)

Modified Rankine Cycle


B)

Threshold frequency


C)

Gibbs free energy


D)

Entropy



Correct Answer :

Modified Rankine Cycle


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?

A)

solar energy


B)

hydroelectric


C)

elevated temperatures


D)

decomposition



Correct Answer :

elevated temperatures

Energy resources derived from natural organic materials is called ?

A)

Geothermal energy sources


B)

Fossil fuels


C)

Biomass


D)

None of the above



Correct Answer :

Fossil fuels

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

A)

granite


B)

shale


C)

sandstone


D)

salt



Correct Answer :

sandstone

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

A)

Oil


B)

Coal


C)

Uranium


D)

There are roughly equal amounts of each of these fuels



Correct Answer :

Oil

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

A)

57%


B)

7%


C)

37%


D)

43%



Correct Answer :

57%

The main constituent of LPG is?

A)

Liquid methane


B)

Liquid butane


C)

Liquid hydrogen


D)

Liquid ethane



Correct Answer :

Liquid butane

Nitrogen fixation is accomplished by?

A)

Bacteria in the atmosphere


B)

Bacteria in the soil


C)

Plants


D)

Fungi



Correct Answer :

Bacteria in the soil

Pollination by Birds is known as?

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?

A)

coal


B)

methane


C)

natural gas


D)

All the above



Correct Answer :

All the above

In study of satellite imageries GIS stands for ?

A)

Geographical Information System


B)

Geographical Integrated System


C)

General Integrated System


D)

Geological Integrated system



Correct Answer :

Geographical Information System

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

A)

Helium


B)

Nitrogen


C)

Hydrogen


D)

Boron



Correct Answer :

Hydrogen

Blue whale is placed under?

A)

endangered


B)

critically endangered


C)

rare


D)

extinct



Correct Answer :

endangered

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General Knowledge of India

Which of the following dance forms was introduced by the great Vaishnava saint and reformer Mahapurusha Sankaradeva ?

Which of the following is the only classical dance of india having links with Muslim culture and represents a unique synthesis of Hindu and Muslim genius in art ?

Time and Distance

Starting from the same point at the same time, Ruhan and Yuvan had to reach the same destination. While Ruhan drove at 45 km/hr, Yuvan was slower by 5 km/hr. If Yuvan arrived at the destination an hour after Ruhan did, the distance covered by each, in Kilometres, was ?

Simple Interest

A sum of money was invested at a certain rate of simple interest for 4 years. Had the sum been invested at a rate 3% higher than the actual rate, the interest earned would have been 720 Rs more. Find the sum initially invested?

Ratio and Proportion

A bag contains red, blue and black balls. The ratio of red to blue balls is 3 : 5. The ratio of black to red balls is 3 : 4. What is the ratio of blue to black balls?

Profit and Loss

Selling a pack of incense sticks for 136 Rs resulted in a loss of 15%. To make a profit of 10%, the selling price should be ?

Percentage

23% of a bucket full of diluted milk was water. If the quantity of pure milk in the bucket was 15.4 liter, then the capacity of the bucket was ?

Average

The average of the marks obtained by three girls in a test was twice the average of the marks obtained by eight boys in that test. If the total marks obtained by all these examinees was 168, find the average marks each of the girls obtained ?

Pipes and Cistern

44 pipes can fill a large water tank in 27 hours. How many hours it take for 66 pipes to fill four such tanks ?

HCF and LCM

A natural number, when divided by 3, 4, 5, 6, and 7 respectively, leaves corresponding remainder of 2, 3, 4, 5 and 6. What is the smallest of all such numbers fulfilling the above condition ?

Coding-Decoding

If in a certain code language, PRINT is written as 34825 and TRUE is written as 5479. Then, how will TENURE be written in that language?

Order Sequence

Arrange the given words from smallest to biggest-
1.Jug
2.Mug
3.Bucket
4.Drum
5.Cup

Statement and Conclusion

Statements
All socks are shoes
Some shoes are black

Conclusions
I. Some shoes are socks.
II. No scoks is black

Numbers

The difference between the place value of 4 and 2 in the number 833749502 is ?

Analogy

GIKM : HJLN :: PRTV : .........?

Order Sequence

In a row of girls, Nanda is eighth from the left and Chanda is nineteenth from right. When Nanda and Chanda interchange their positions, Chanda becomes twnty-third form right. How many girls are there in the row?

Analogy

Summer: Day :: Winter : ........?

Bird:Winges :: Fish:........?