Science & Technology UPSC PYQ 1997

The characteristic odour of garlic is due to

Recommended daily intake of proteins for a moderately active woman is

Which one of the following is present in the largest amount in terms of per cent by mass in the earth’s crust?

The working principle of a washing machine is

The following table shows the per cent change in the number of sales (in rupees) at different retail stores in a given neighbourhood market in the period 1993 to 1995: Retail Store — Percent Change 1993 to 1994 — 1994 to 1995 Anshu: +10, -10 Borna: -20, +9 Calpo: +5, +12 Dilip: -7, -15 Elegant: +17, -8 If the sales at Anshu store amounted to Rs. 8 lakhs in 1993, then the number of sales (in lakhs of rupees) at that store in 1995 was

Match List I with List II and select the correct answer by using the codes given below the lists: List I I. Malaria II. Filaria III. Encephalitis IV. Leukaemia List II A) Bone marrow B) Brain C) Muscle D) Lymph node E) Blood cells

Consider the figures given below: (In the given sequence of figures, the figure that would logically appear at Sl. No. V is)

The major component of honey is

What is the average fat content of buffalo milk?

Which one of the following is paramagnetic in nature?

Which one of the following stars is nearest to the earth?

The number of students in two sections, A and B, having different heights is shown in the following table: Height (in metres) Number of students with that height in Section A Section B 1.55 3 2 1.60 7 3 1.62 12 14 1.65 15 14 1.68 8 9 1.71 6 5 1.75 3 4 The ratio of the number of students of a particular height in Section A to that in Section B is the maximum for the height of

Which one of the following is a valid conclusion?

When three coins are tossed together the probability that all coins have the same face up is

The average monthly income of a person in a certain family of 5 is Rs. 1000. What will be the monthly average income of a person in the same family if the income of one person increased by Rs. 12,000 per year?

Arteries supplying blood to the heart are called

A survey was conducted on a sample of 1000 persons with reference to their knowledge of English, French and German. The results of the survey are presented in the given Venn diagram. The ratio of the number of persons who do not know any of the three languages to those who know all the three languages is

Which one of the following is used as an anti-freeze for the automobile engines?

A girl is swinging on a swing in sitting position. When the same girl stands up, the period of swing will

In the series POQ, SRT, VUW, ?, the blank space refers to

A major health mission carried in 1996 was

The tail of a comet is directed away from the sun because

Which one of the following is an active component of oil of clove?

The planet Mercury is revolving in an elliptical orbit around the sun as shown in the given figure. The kinetic energy of Mercury is greatest at the point labelled

In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can speak any other language. If 2 persons in the group can speak two languages and one person can speak all the three languages, then how many persons are there in the group?

Which one of the following techniques can be used to establish the paternity of a child?

The tendency of a liquid drop to contract and occupy minimum area is due to

Alpha-keratin is a protein present in

P is 300 km eastward of O and Q is 400 km north of O. R is exactly in the middle of Q and P. The distance between Q and R is

If the number representing volume and surface area of a cube are equal, then the length of the edge of the cube in terms of the unit of measurement will be

The number of times in a day the Hour hand and the Minute hand of a clock at right angles is

There are three drawers in a table. One contains two gold coins, another two silver coins, and the third, a silver coin and a gold coin. One of the drawers is pulled out and a coin is taken out. It turns out to be a silver coin. What is the probability of drawing a gold coin, if one of the other two drawers is pulled out next and one of the coins in it is drawn at random?

The pituitary gland by virtue of its tropic hormones controls the secretory activity of other endocrine glands. Which one of the following endocrine glands can function independent of the pituitary gland?

Which one of the following was used as a chemical weapon in the First World War?

The most reactive among the halogens is

Seven persons P, Q, R, S, T, U and V participate in and finish all the events of a series of swimming races. There are no ties at the finish of any of the events. V always finishes somewhere ahead of P. P always finishes somewhere ahead of Q. Either R finishes first and T finishes last or S finishes first and U or Q finishes last. If in a particular race V finished fifth, then which one of the following would be true?

In the given figure, if QRS is an equilateral triangle and QTS is an isosceles triangle and x = 47°, then the value (in degrees) of y will be

Oxygen transportation in a human body takes place through I. Blood II. Lungs III. Tissue The correct sequence of transportation is

Which one of the following is a vector quantity?

A smooth inclined plane is inclined at an angle θ with the horizontal as shown in the figure. A body starts from rest and slides down the inclined surface. The time taken by the body to reach the bottom is

Consider the following: I. Saxena, David, Jain and Kumar were District Collectors at places P, Q, R and S respectively in 1970. II. In 1972 they were transferred. Saxena and Jain interchanged places. Kumar and David also interchanged places. III. One year later in 1973 they were again transferred such that David and Jain interchanged places and Saxena and Kumar were also interchanged. What should be the next round of transfers so that all the four persons could have been posted at all the four places?

The sequencing of the entire genome (the totality of all genes) of an organism was completed in 1996. The organism was

Corpus luteum is a mass of cells found in

A boat which has a speed of 5 km/hr in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water in km/hr is

Which one of the following has the highest fuel value?

A rectangular plot of lawn shown in the figure has dimensions x and y and is surrounded by a gravel pathway of width 2 m. What is the total area of the pathway?

The world’s fastest computer has been able to perform (as of Dec. 1996)

Which one of the following conditions is most relevant for the presence of life on Mars?

Examine the following statements regarding a set of balls: I. All balls are black. II. All balls are white. III. Only some balls are black. IV. No balls are black. Assuming that the balls can only be black or white, which two statements given above can both be true, but cannot both be false? Choose the correct answer from the codes given below:

The length, breadth and height of a room are l, b and h respectively. The perimeter of the ceiling expressed as a percentage of the total area of the four walls is

Antigen is a substance which