55 questions from the UPSC 2000 examination.
55 questions
A ‘black hole’ is a body in space which does not allow any radiation to come out. This property is due to its
Most of the explosions in mines occur due to the mixing of
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.
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:
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:
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?
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
Soft drinks such as colas contain significant quantities of
Fluorescent tubes are fitted with a choke. The choke coils
The blood glucose level is commonly expressed as
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.
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?
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.
Aluminium surfaces are often “anodized”. This means the deposition of a layer of
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?
The memory of a computer is commonly expressed in terms of Kilobytes or Megabytes. A byte is made up of
Which one of the following has a greater perimeter than the rest?
For reproducing sound, a CD (Compact Disc) audio player uses a
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?
A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
Assertion (A): A man standing on a completely frictionless surface can propel himself by whistling. Reason (R): If no external force acts on a system, its momentum cannot change.
Insect resistant cotton plants have been genetically engineered by inserting a gene from a/an
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?
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?
The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by
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?
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.
Consider the following pictures of a dice: What is the number opposite of 3?
When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow-like colours are seen. This can be explained on the basis of the phenomenon of
Consider the following features of newer models of motor cars: I. Radial tyres II. Streamlined body III. Multipoint fuel injection IV. Catalytic converter with exhaust Which of these features make the newer models of motor cars more fuel-efficient?
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?
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?
At which stage in its life-cycle does the silkworm yield the fibre of commerce?
Phytotron is a facility to
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?
Canola refers to special type of oil seed mustard varieties bred for human consumption. The main characteristic of these varieties is that the
Hybridoma technology is a new biotechnological approach for commercial production of
Which one of the following materials is very hard and very ductile?
A goat is tied to two poles P and Q with ropes that are 15-metre long. P and Q are 20 metres apart as shown in the given diagram. Which one of the following shaded portions indicates the total area over which the goat can graze?
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
The stones formed in human kidney consist mostly of
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?
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:
Which one of the following does a TV remote control unit use to operate a TV set?
If X = –2, then X³ – X² – X – 1 is equal to
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?
In the given figure, angle QOP = 30° and angle ORP = 20°, angle QOR is equal to
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?
In a certain code, MARCH is written as OCTEJ. How is RETURN written in that code?
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.
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?
Which one of the following organisms can serve as a biofertilizer for rice crop?
A noise level of 100 decibels would correspond to
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:
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?