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UPSC IAS Previous Year Prelims Paper - CSP 2011

1. 
Environment
CSP 2011

Biodiversity forms the basis for human existence in the following ways :
1. Soil formation.
2. Prevention of soil erosion.
3. Recycling of waste.
4. Pollination of crops
Select the correct answer using the codes given below :

A. 1,2,and 3 only.
B. 2,3 and 4 only.
C. 1 and 4 only.
D. 1,2,3 and 4 only.

Answer: Option D

Biological diversity helps in the formation and maintenance of soil structure and the retention of moisture and nutrient levels. Biodiversity supports ecosystem services including air quality, climate water purification, pollination, and prevention of erosion.

2. 
Science And Technology
CSP 2011

Aspartame is an artificial sweetener sold in the market. It consist of amino acids and provides calories like other amino acids. Yet, it is used as a low­calorie sweetening agent in food items. What is the basis of this use ?

A. Aspartame is as sweet as table sugar, but unlike table sugar, it is not readily oxidized in human body due to lack of requisite enzymes.
B. When aspartame is used in food processing , the sweet taste remains, but it becomes resistant to oxidation.
C. Aspartame is as sweet as sugar, but after ingestion into the body, it is converted into metabolites that yield no calories.
D. Aspartame is several times sweeter than table sugar, hence food items made with small quantities of aspartame yield fewer calories on oxidation.

Answer: Option D

Aspartame is metabolized by the body into two constituent amino acids and methanol. These hydrolysis products are handled by the body in the same way as aspartic acid, L-Phenylanine and methanol from other consumed foods. These components yield NO calory and add nothing new to the diet.

3. 
Modern History
CSP 2011

What was the purpose with which sir William wedderburn and W.S.Caine had set up the Indian parliamentary committee in 1893 ?

A. To agitate for Indian political reforms in the house of commons.
B. To campaign for the entry of Indians into the imperial judiciary.
C. To facilitate a discussion on India’s independence in the British parliament.
D. To agitate for the entry of eminent Indians into the British parliament.

Answer: Option A

On 28 December 1885, the Indian National Congress was founded at Gokuldas Tejpal Sanskrit College in Bombay, with 72 delegates in attendance. A. O. Hume assumed office as the General Secretary. Womesh Chandra Bonnerjee of Calcutta was elected President. The additional British Members were William Wedderburn and Justice John Jardine. All others were the Hindus from Calcutta and Madras Presidency. Wedderburn had entered the parliament as a liberal member in 1893 and had sought to voice India's grievances within the house.

4. 
Science And Technology
CSP 2011

What is the difference between a CFL and an LED lamp ?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi­conductor material.
2. The average life span of a CFL is much longer than that of an LED lamp.
3. A CFL is less energy­efficient as compared to an LED lamp.
Which of the statements given above is/are correct ?

A. 1 only.
B. 2 and 3 only.
C. 1 and 3 only.
D. 1,2,and 3.

Answer: Option C

LED bulbs are grouped in clusters with diffuser lenses which have broadened the applications for LED use in the home.

5. 
Current Affairs
CSP 2011

Recently,"oil zapper" was in the news. What is it ?

A. It is an eco­friendly technology for the remediation of oily sludge and oil spills .
B. It is the latest technology developed for under­sea oil exploration.
C. It is a genetically engineered high biofuel­yielding maize variety.
D. It is the latest technology to control the accidentally caused flames from oil wells.

Answer: Option A

The oil zapper feeds on hydrocarbon compounds present in crude oil and oily sludge (a hazardous hydrocarbon waste generated by oil refineries) and converts them into harmless CO and water. The scientific term for the above-mentioned process is bioremediation. 2

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UPSC/IAS Practice Papers

MOCK 1 MOCK 2 MOCK 3 MOCK 4 MOCK 5

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Topicwise Practice Questions

Ancient History Medieval History Modern History Art and Culture Physical Geography Social Geography Economic Geography Agriculture Envrironment Constitution Governance India And The World Fundamentals Of Economics Banking And Finance Growth And Development International Economics Science And Technology General Knowledge
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