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UPSC Science & Technology PYQs 2005 | Vaidra | Vaidra
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Science & Technology UPSC PYQ 2005

33 questions from the UPSC 2005 examination.

33 questions

1Mediumprelims2 marks
Health & Diseases

Consider the following statements: 1. Dengue is a protozoan disease transmitted by mosquitoes. 2. Retro-orbital pain is not a symptom of Dengue. 3. Skin rash and bleeding from nose and gums are some of the symptoms of Dengue. Which one of the following statements is/are correct?

A1 and 2
B3 only
C2 only
D1 and 3
2Easyprelims2 marks
Health & Diseases

Pneumoconiosis afflicts the workers who work mainly in

ATanneries
BCoal mining industry
CDistilleries
DGlass industry
3Mediumprelims2 marks
Quantitative Aptitude

There are 6 persons – A, B, C, D, E and F. They are to be seated in a row such that B never sits anywhere ahead of A. In how many different ways can this be done?

A60
B72
C120
DNone of the above
4Mediumprelims2 marks
Quantitative Aptitude

Ten identical particles are moving randomly inside a closed box. What is the probability that at any given point of time all ten particles will be lying in the same half of the box?

A1/2
B1/5
C2/11
D1/512
5Easyprelims2 marks
Science & Technology Institutions

Consider the following statements : 1. The Headquarters of the International Organization for Standardization are located in Rome 2. ISO 9000 relates to the quality management system and standards. 3. ISO 14000 relates to environmental management system standards. Which of the statements given above is/are correct?

A1 and 2
B3 only
C2 and 3
DNone
6Mediumprelims2 marks
Logical Reasoning & Puzzles

Who studies in Bhopal?

AGopal
BHarsh
CGopal or Inder
DInder or Harsh
7Mediumprelims2 marks
Logical Reasoning & Puzzles

Which College is situated in Inder’s hometown?

ACommerce
BMedical
CEconomics
DCommerce or Medical
8Easyprelims2 marks
Energy & Environment

Assertion (A): The main constituent of the Liquefied Petroleum Gas is methane. Reason (R): Methane can be used directly for burning in homes and factories where it can be supplied through pipelines.

ABoth A and R are individually true and R is the correct explanation of A
BBoth A and R are individually true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
9Mediumprelims2 marks
Quantitative Aptitude

Left pan of a faulty balance weighs 100 gram more than its right pan. A shopkeeper keeps the weight measure in the left pan while buying goods but keeps it in the right pan while selling his goods. He uses only 1 kg weight measure. If he sells his goods at the listed cost price, what is his gain?

A200 1/11 %
B100/11 %
C100/9 %
D200/9 %
10Easyprelims2 marks
Health & Diseases

Which one of the following diseases of milching animals are infectious? 1. Foot and Mouth disease 2. Anthrax 3. Black Quarter 4. Cowpox Select the correct answer using the codes given below:

A1, 2 and 3
B2, 3 and 4
C1 and 4
D1, 2, 3 and 4
11Mediumprelims2 marks
Biology

Assertion (A): All the proteins in our food are digested in small intestine only. Reason (R): The protein-digesting enzymes from pancreas are released into small intestine.

ABoth A and R are individually true and R is the correct explanation of A
BBoth A and R are individually true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
12Easyprelims2 marks
Energy & Environment

Match List-I (Atomic Power Plants/Heavy Water Plants) with List-II (State) and select the correct answer using the code given below the lists : List-I (A) Thal (B) Manuguru (C) Kakrapar (D) Kaiga List-II (State) 1. Andhra Pradesh 2. Gujarat 3. Maharastra 4. Maha 5. Karnataka

A2 1 4 5
B3 5 2 1
C2 5 4 1
D3 1 2 5
13Easyprelims2 marks
Biology

Consider the following statements : 1. During the process of osmosis, the solvent travels from the concentrated solution to the dilute solution. 2. In the reverse osmosis, external pressure is applied to the dilute solution. Which of the statements given above is/are correct?

A1 only
B2 only
CBoth 1 and 2
DNeither 1 nor 2
14Easyprelims2 marks
Biology

Assertion (A): Amoeba reproduces by fission. Reason (R): All unicellular organisms reproduce by asexual methods.

ABoth A and R are individually true and R is the correct explanation of A
BBoth A and R are individually true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
15Easyprelims2 marks
Materials & Engineering

Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?

ASteel > Mercury > Gold
BGold > Mercury > Steel
CSteel > Gold > Mercury
DGold > Steel > Mercury
16Mediumprelims2 marks
Quantitative Aptitude

An equilateral triangular plate is to be cut into a number of identical small equilateral triangular plates. Which one of the following can be a possible value of n?

A196
B216
C256
D296
17Hardprelims2 marks
Quantitative Aptitude

A big rectangular plot of area 4320 m² is divided into 3 square-shaped smaller plots by fencing parallel to the smaller side of the plot. However some area of land was still left as a square could not be formed. So, 3 more square-shaped plots were formed by fencing parallel to longer side of the original plot such that no area of the plot was left surplus. What are the dimensions of the original plot?

A160 m × 27 m
B240 m × 18 m
C120 m × 36 m
D135 m × 32 m
18Mediumprelims2 marks
Quantitative Aptitude

On a railway route between two places A and B, there are 10 stations on the way. If 4 new stations are to be added, how many types of new tickets will be required if each ticket is issued for a one-way journey?

A14
B48
C96
D108
19Mediumprelims2 marks
Computer & Information Technology

Consider the following statements : 1. A geostationary satellite is at an approximate height of 10,000 km 2. FM transmission of music is of very good quality because the atmospheric or man-made noises which are generally frequency variations can do little harm. Which of the statements given above is/are correct?

A1 only
B2 only
CBoth 1 and 2
DNeither 1 nor 2
20Mediumprelims2 marks
Quantitative Aptitude

2 men and 1 woman board a bus in which 5 seats are vacant. One of these five seats is reserved for ladies. A woman may or may not sit on the seat reserved for ladies but a man can not sit on the seat reserved for ladies. In how many different ways can the five seats be occupied by these three passengers?

A15
B36
C48
D60
21Mediumprelims2 marks
Logical Reasoning & Puzzles

Which is Krishnan’s hometown?

AAhmedabad
BCuttack
CBhopal
DCannot be determined
22Mediumprelims2 marks
Quantitative Aptitude

300 persons are participating in a meeting, out of which 120 are foreigners and the rest are Indians. Out of the Indians there are 110 men who are not judges; 160 are men judges, and 35 are women judges. There are no foreign judges. How many Indian women attended the meeting?

A35
B45
C55
D60
23Easyprelims2 marks
Science & Technology History

Who among the following invented Lasers?

ATheodore Maiman
BDenis Papin
CWillam Moton
DFancis Crick
24Mediumprelims2 marks
Quantitative Aptitude

Aryan runs at a speed of 40 metre/minute. Rahul follows him after an interval of 5 minutes and runs at a speed of 50 metre/minute. Rahul’s dog runs at a speed of 60 metre/minute and starts along with Rahul. The dog reaches Aryan and then comes back to Rahul, and continues to do so till Rahul reaches Aryan. What is the total distance covered by the dog?

A600 metres
B750 metres
C980 metres
D1200 metres
25Hardprelims2 marks
Quantitative Aptitude

There are 10 identical coins and each one of them has ‘H’ engraved on one face and ‘T’ engraved on the other face. These 10 coins are lying on a table and each one of them has the ‘H’ face as the upper face. In one attempt, exactly four (neither more nor less) coins can be turned upside down. What is the minimum number of attempts in which the ‘T’ faces of all the 10 coins can be brought to be the upper faces?

A4
B7
C8
DNot possible
26Mediumprelims2 marks
Chemistry

Consider the following statements : 1. Anhydrous sodium carbonate is commonly known as baking soda 2. Baking soda is used in fire extinguishers 3. Bleaching powder is manufactured in Hasenclever plant Which of the statements given above is/are correct?

A1, 2 and 3
B2 and 3
C3 only
D1 and 2
27Mediumprelims2 marks
Health & Diseases

Assertion (A): The person with diabetes insipidus feels thirsty. Reason (R): A person with diabetes insipidus suffers from excess secretion of vasopressin.

ABoth A and R are individually true and R is the correct explanation of A
BBoth A and R are individually true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
28Mediumprelims2 marks
Science & Technology Institutions

Consider the following statements : 1. Vigyan Rail is a Science Exhibition on wheels organized by the Council of Scientific and Industrial Research. 2. Vigyan Prasar is an autonomous body under the Ministry of Human Resource Development. 3. EDUSAT, the ISRO’s educational satellite was launched from French Guyana in 2004. Which of the statements given above is/are correct?

A1, 2 and 3
B1 and 2
C2 and 3
DNone
29Easyprelims2 marks
Biology

What is the order of magnitude of electric resistance of the human body (dry)?

A10² ohm
B10⁴ ohm
C10⁶ ohm
D10⁸ ohm
30Mediumprelims2 marks
Quantitative Aptitude

There are 6 persons: A, B, C, D, E and F. (i) A has 3 items more than C (ii) D has 2 items less than B (iii) E has 6 items less than F (iv) C has 2 items more than E (v) F has 3 items more than D Which one of the following figures CANNOT be equal to the total number of items possessed by all the 6 persons?

A41
B47
C53
D58
31Mediumprelims2 marks
Quantitative Aptitude

A square is divided into 9 identical smaller squares. Six identical balls are to be placed in these smaller squares such that each of the three rows gets at least one ball (one ball in one square only). In how many different ways can this be done?

A27
B36
C54
D81
32Mediumprelims2 marks
Space Technology & Astronomy

Assertion (A): Existence of human life on Venus is highly improbable. Reason (R): Venus has extremely high level of carbon dioxide in its atmosphere.

ABoth A and R are individually true and R is the correct explanation of A
BBoth A and R are individually true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
33Hardprelims2 marks
Logical Reasoning & Puzzles

If Inder studies in Ahmedabad, then which one of the following is the correct combination of Person–Hometown–Place of Study?

AGopal – Ernakulam – Delhi
BJai – Ahmedabad – Ernakulam
CKrishnan – Delhi – Ernakulam
DHarsh – Bhopal – Delhi
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