Science & Technology UPSC PYQ 2006

In which one among the following is the speed of sound maximum?

What is the approximate mean velocity with which the Earth moves round the Sun in its orbit?

Who is the President of the Council of Scientific and Industrial Research?

Match List-I (Indian Scientist/Scholar) with List-II (Area of work) and select the correct answer using the code given below the lists: List I A. C. N. R. Rao B. Jagdish Bhagwati C. G. N. Ramchandran D. Ashok List II 1. Telecommunication 2. Physics 3. Economics 4. Solid State Chemistry and Material Science Code:

Each of the persons A, B, C, D and E possesses unequal number (<10) of similar items. A, B and C possess 21 items in all, while C, D and E possess 7 items in all. How many items do A and B possess in all?

In a question paper, there are four multiple-choice questions. Each question has five choices with only one choice for its correct answer. What is the total number of ways in which a candidate will not get all the four answers correct?

In an office, the number of persons who take tea is twice the number of persons who take only coffee. The number of persons who take coffee is twice the number of persons who take only tea. Consider the following statements: 1. The sum of the number of persons who take either tea or coffee or both is four times the number of persons who take both coffee and tea. 2. The sum of the number of persons who take only coffee and those who take only tea is twice the number of persons who take both coffee and tea. Which of the statements given above is/are correct?

A box contains 5 sets of balls while there are 3 balls in each set. Each set of balls has one colour which is different from every other set. What is the least number of balls that must be removed from the box in order to claim with certainty that a pair of balls of the same colour has been removed?

3 digits are chosen at random from 1, 2, 3, 4, 5, 6, 7, 8 and 9 without repeating any digit. What is the probability that their product is odd?

How many numbers are there in all 6000 to 6999 (both 6000 and 6999 included) having at least one of their digits repeated?

Which are the materials generally employed as solder in soldering operation in electronics?

There are 8 equidistant points A, B, C, D, E, F, G and H in the clockwise direction on the periphery of a circle. In a time-interval t, a person reaches from A to C with uniform motion while another person reaches the point E from the point B during the same time-interval with uniform motion. Both the persons move in the same direction along the circumference of the circle and start at the same instant. How much time after the start will the two persons meet each other?

Assertion (A): Cellulose is used in making shatter-proof glass. Reason (R): Polysaccharides are not soluble in water.

Which one among the following is not a good source of nutritional calcium?

Each of the six faces of a cube is numbered by one of the six digits from 1 to 6. This cube is shown in its four different positions in the figures I, II, III and IV. Consider the following statements: 1. Figures II and III are sufficient to know as to which face is opposite to the face numbered 6. 2. Figures II and III are sufficient to know as to which face is opposite to the face numbered 4. 3. Figures I and IV are sufficient to know as to which face is opposite to the face numbered 4. Which of the statements given above are correct?

There are three parallel straight lines. Two points A and B are marked on the first line, points C and D are marked on the second line, and points E and F are marked on the third line. Each of these six points can move to any position on its respective straight line. Consider the following statements: 1. The minimum number of triangles that can be formed by joining these points is zero. 2. The maximum number of triangles that can be formed by joining these points is twenty. Which of the statements given above is/are correct?

Consider the following statements in respect of India's advanced satellite INSAT–4A : 1. INSAT–4A was launched in December, 2005 from New Mexico. 2. The European commercial launch service provider Arianespace was associated with the launch of INSAT–4A. 3. Tata-Sky—a digital cable service provider is associated with DTH television broadcasting services from INSAT-4A. Which of the statements given above are correct?

A watch showed a time of fourteen minutes past nine (9 hrs 14 minutes). The positions of the hour-hand and the minute-hand of the watch are exactly interchanged. The new time shown by the watch is closest to which one of the following?

Consider the following statements: 1. Meningococcal Meningitis is transmitted from person to person by mosquito bites. 2. Vomiting and neck pain are two of the symptoms of Meningococcal meningitis. Which of the statements given above is/are correct?

P, Q, R, S and T reside in a 5-storeyed (Ground + 4) building, and each of them resides on a separate floor. Further, 1. T does not reside on the topmost floor. 2. Q does not reside on the ground floor. 3. S resides on one storey above that of P and one storey below that of R. To know as to which of the 5 persons resides on the ground floor which of the above statements are sufficient / insufficient?

In a tournament each of the participants was to play one match against each of the other participants. 3 players fell ill after each of them had played three matches and had to leave the tournament. What was the total number of participants at the beginning, if the total number of matches played was 75 ?

A mixed doubles tennis game is to be played between two teams (each team consists of one male and one female). There are 4 married couples. No team is to consist of a husband and his wife. What is the maximum number of games that can be played?

Consider the following chemicals: 1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene Which of the above is/are used as dry-cleaning chemicals?

Each of 8 identical balls is to be placed in the squares shown in the figure given above in a horizontal direction such that one horizontal row contains 6 balls and the other horizontal row contains 2 balls. In how many maximum different ways can this be done?

Refer to the three figures I, II and III in which numbers are arranged in squares. What is the value of X in figure III?

Which one of the following is printed on a commonly used fluorescent tube light?

Each of 2 women and 3 men is to occupy one chair out of 8 chairs, each of which is numbered from 1 to 8. First, women are to occupy any two chairs from those numbered 1 to 4; and then 3 men would occupy any three chairs out of the remaining 6 chairs. What is the maximum number of different ways in which this can be done?

What is the Universal Product Code (UPC) adopted for?

Consider the following statements: 1. ELISA test is employed as the first and most basic test for an individual to detect cancer. 2. Almost 50% of human beings have Rh+ blood while the remaining have Rh- blood. Which of the statements given above is/are correct?

What is the name of the vessel that delivers the nutrient-rich blood from the stomach and small intestine to the liver?

Consider the following statements with reference to the human body: 1. The common bile duct releases its contents into the stomach. 2. The pancreatic duct releases its contents into the duodenum. Which of the statements given above is/are correct?

In which one of the following areas did the Indira Gandhi Center for Atomic Research make significant progress in the year 2005?

What does the term ‘Dolby B’, or ‘Dolby C’ printed on tape recorders and other sound systems refer to?

To which one of the following processes is the term CMYK related?

Assertion (A): To orbit around the Sun, the planet Mars takes lesser time than the time taken by the Earth. Reason (R): The diameter of the planet Mars is less than that of the Earth.

Consider the following statements: 1. Caffeine, a constituent of tea and coffee, is a diuretic. 2. Citric acid is used in soft drinks. 3. Ascorbic acid is essential for the formation of bones and teeth. 4. Citric acid is a good substitution for ascorbic acid in our nutrition. Which of the statements given above are correct?

Which of the following pairs is/are correctly matched? Inventor : Invention 1. Christopher Cockerell : Hovercraft 2. David Bushnell : Submarine 3. J. C. Perrier : Steamship Select the correct answer using the code given below:

Which one of the following pairs is not correctly matched? Recent Scientific Achievement : Country