UPSC 2000 Prelims – all questions
146 questions · 2000 · answers as per the UPSC key · page 3 of 3
Assertion (A): In a motion picture, usually 24 frames are projected every second over the whole length of the film.
Reason (R): An image formed on the retina of eye persists for about 0.1 s after the removal of stimulus.
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Assertion (A): Small glass beads fixed on traffic signals glow brightly when light falls upon them.
Reason (R): Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected back into a rarer medium.
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The stones formed in human kidney consist mostly of
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Most of the explosions in mines occur due to the mixing of
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Match List I with List II
and select the correct answer using the codes given below the Lists:
List I I. German Silver II. Solder III. Bleaching Powder IV. Hypo
List II A) Tin B) Nickel C) Sodium D) Chlorine
Codes:
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Which one of the following materials is very hard and very ductile?
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Soft drinks such as colas contain significant quantities of
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Aluminium surfaces are often “anodized”. This means the deposition of a layer of
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A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
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Match List I (Industrial processes) with List II (Industry with which associated) and select the correct answer using the codes given below the Lists:
List I I. Cracking II. Smelting III. Hydrogenation IV. Vulcanization
List II A) Rubber B) Petroleum C) Copper D) Edible fats
Codes:
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Assertion (A): Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons.
Reason (R): Ammonia can be liquified at ambient temperatures at low pressures.
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Which one of the following organisms can serve as a biofertilizer for rice crop?
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At which stage in its life-cycle does the silkworm yield the fibre of commerce?
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Match List I (Diseases) with List II (Types of disease) and select the correct answer using the codes given below the Lists:
List I I. Haemophilia II. Diabetes III. Diabetes IV. Ringworm
List II A) Deficiency disease B) Genetic disease C) Hormonal disorder D) Fungal infection
Codes:
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The blood glucose level is commonly expressed as
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Phytotron is a facility to
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Match List I (Endocrine glands) with List II (Hormones secreted) and select the correct answer using the codes given below the Lists:
List I I. Gonads II. Pituitary III. Pancreas IV. Adrenal
List II A) Insulin B) Progesterone C) Growth hormones D) Cortisone
Codes:
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Insect resistant cotton plants have been genetically engineered by inserting a gene from a/an
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Hybridoma technology is a new biotechnological approach for commercial production of
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The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by
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Consider the following statements: Hard water is not suitable for I. Drinking. II. Washing clothes with soap. III. Use in boilers. IV. Irrigating crops.
Which of these statements are correct?
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Canola refers to special type of oil seed mustard varieties bred for human consumption. The main characteristic of these varieties is that the
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Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called
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Assertion (A): In human beings, the females play a major role in determining the sex of the offspring.
Reason (R): Women have two ‘X’ chromosomes.
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Assertion (A): “DNA Finger-printing” has become a powerful tool to establish paternity and identity of criminals in rape and assault cases.
Reason (R): Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.
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A rectangular water tank measures 15 m × 6 m at top and is 10 m deep. It is full of water. If water is drawn out lowering the level by 1 metre, how much of water has been drawn out?
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An accurate clock shows 8 o’clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 o’clock in the afternoon?
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The monthly income of Komal and Asha are in the ratio of 4 : 3. Their monthly expenses are in the ratio of 3 : 2. However, both save Rs. 600 per month. What is their total monthly income?
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If X = –2, then X³ – X² – X – 1 is equal to
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In the given figure, all line segments of the shaded portion are of the same length and at right angles to each other. The same can be cut out of a board of side 10 cm. What is the area of the shaded portion?
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Consider the following pictures of a dice: What is the number opposite of 3?
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Examine the following relationships among members of a family of six persons A, B, C, D, E and F. I. The number of males equals that of females. II. A and E are sons of F. III. D is the mother of two, one boy and one girl. IV. B is the son of A. V. There is only one married couple in the family at present.
Which one of the following inferences can be drawn from the above?
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The given diagram shows the number of students who failed in an examination comprising papers in English, Hindi and Mathematics. The total number of students who took the test is 500. What is the percentage of students who failed in at least two subjects? The original diagram is not available for this question.
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In a certain code, MARCH is written as OCTEJ. How is RETURN written in that code?
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A, B, C, D, E and F, not necessarily in that order, are sitting in six chairs regularly placed around a round table. It is observed that A is between D and F. C is opposite D. D and E are not on neighbouring chairs.
Which one of the following must be true?
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In a class there are 18 boys who are over 160 cm tall. If these boys constitute three fourths of the boys and the total number of boys is two third of the number of students in the class, then what is the number of girls in the class?
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A rectangular piece of iron sheet measuring 50 cm by 100 cm is rolled into a cylinder of height 50 cm. If the cost of painting the cylinder is Rs. 50 per square metre, then what will be the cost of painting the outer surface of the cylinder?
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In an examination, every candidate took Physics or Mathematics or both. 65.8% took Physics and 59.2% took Mathematics. The total number of candidates was 2000. How many candidates took both Physics and Mathematics?
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A bag contains 20 balls. 8 balls are green, 7 are white and 5 are red. What is the minimum number of balls that must be picked up from the bag blind-folded (without replacing any of it) to be assured of picking at least one ball of each colour?
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Which one of the following has a greater perimeter than the rest?
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In the given figure, angle QOP = 30° and angle ORP = 20°, angle QOR is equal to
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A club has 108 members. Two-thirds of them are men and the rest are women. All members are married except for 9 women members. How many married women are there in the club?
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The following figure represents time vs. learning curves of two students, Q and R, for learning a Mathematics lesson.
Which one of the following inferences can be drawn from the graph?
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A person starts from a point A and travels 3 km eastwards to B and then turns left and travels thrice that distance to reach C. He again turns left and travels five times the distance he covered between A and B and reaches his destination D. The shortest distance between the starting point and destination is
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The distribution of 1,00,000 tourists who visited India during a particular year is shown in the given charts. Based on this, the number of Japanese tourists below the age of 39 who visited India in the year concerned is
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What is the maximum number of pieces of 5 cm × 5 cm × 10 cm cake that can be cut from a big cake of 5 cm × 30 cm × 30 cm size?