UPSC CSE Prelims
UPSC Science & Technology — Solved Previous Year Questions
337 authentic Science & Technology PYQs with correct answers and detailed explanations. Click any question to see its full solution.
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UPSC 2024
- “Membrane Bioreactors” are often discussed in the context of:
- Which one of the following is synthesised in the human body that dilates blood vessels and increases blood flo…
- Consider the following activities: 1. Identification of narcotics on passengers at airports or in aircraft 2. …
- Consider the following aircraft: 1. Rafael 2. MiG-29 3. Tejas MK-1 How many of the above are considered fifth-…
- With reference to radioisotope thermoelectric generators (RTGs), consider the following statements: 1. RTGs ar…
- Recently, the term “pumped-storage hydropower” is actually and appropriately discussed in the context of which…
- Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?
UPSC 2023
- ‘Aerial metagenomics’ best refers to which one of the following situations?
- Microsatellite DNA’ is used in the case of which one of the following?
- ‘Wolbachia method’ is sometimes talked about with reference to which one of the following?
- Consider the following pairs: Objects in space Description 1. Cepheids Giant clouds of dust and gas in space 2…
- Which one of the following countries has its own Satellite Navigation System?
- Consider the following statements: 1. Ballistic missiles are jet-propelled at subsonic speeds throughout their…
- Consider the following heavy industries: 1. Fertilizer plants 2. Oil refineries 3. Steel plants Green hydrogen…
- Consider the following activities: 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasi…
- Consider the following actions: 1. Detection of car crash/collision, which result in the deployment of airbags…
- With reference to the role of biofilters in Recircu- lating Aquaculture System, consider the following stateme…
- With reference to green hydrogen, consider the following statements: 1. It can be used directly as a fuel for …
UPSC 2022
- In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements: 1. Th…
- Consider the following statements in respect of probiotics: 1. Probiotics are made of both bacteria and yeast.…
- With reference to Web 3.0, consider the following statements: 1. Web 3.0 technology enables people to control …
- Which one of the following is the context in which the term “qubit” is mentioned?
- Consider the following communication technologies: 1. Closed-circuit Television 2. Radio Frequency Identificat…
- Consider the following statements: 1. Other than those made by humans, nanoparticles do not exist in nature. 2…
- If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the…
- Consider the following statements: 1. Biofilms can form on medical implants within human tissues. 2. Biofilms …
- Certain species of which one of the following organisms are well known as cultivators of fungi?
UPSC 2021
- Bollgard I and Bollgard II technologies are mentioned in the context of:
- In the context of hereditary diseases, consider the following statements: 1. Passing on mitochondrial diseases…
- The term ‘ACE2’ is talked about in the context of:
- Consider the following statements: 1. Adenoviruses have single stranded DNA genomes whereas retroviruses have …
- With reference to recent developments regarding ‘Recombinant Vector Vaccine’, consider the following statement…
- Which one of the following is a reason why astronomical distances are measured in light-years?
- In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following? …
- Consider the following: 1. Bacteria 2. Fungi 3. Virus Which of the above can be cultured in artificial/synthet…
- With reference to street - lighting, how do sodium lamps differ from LED lamps? 1. Sodium lamps produce light …
- Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the follow…
- ‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which o…
- Water can dissolve more substances than any other liquid because
UPSC 2020
- Consider the following statements: 1. Genetic changes can be introduced in the cells that produce eggs or sper…
- What is the importance of using Pneumococcal Conjugate Vaccines in India? 1. These vaccines are effective agai…
- With the present state of development, Artificial Intelligence can effectively do which of the following? 1. B…
- With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?…
- In India, under cyber insurance for individuals, which of the following benefits are generally covered, in add…
- With reference to “Blockchain Technology” consider the following statements: 1. It is a public ledger that eve…
- When reference to carbon nanotubes, consider the following statements: 1. They can be used as carriers of drug…
- In India, why are some nuclear reactors kept under “IAEA Safeguards” while others are not?
- Consider the following activities: 1. Spraying pesticides on a crop field 2. Inspecting the craters of active …
- Which of the following statements are correct regarding the general difference between plant and animal cells?…
- In the context of recent advances in human reproductive technology. “Pronuclear Transfer” is used for
- With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running…
- With reference to the current trends in the cultivation of sugarcane in India, consider the following statemen…
UPSC 2019
- ‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why? 1. It is used in develo…
- Which of the following are the reasons for the occurrence of multi-drug resistance in microbial pathogens in I…
- What is Cas9 protein that is often mentioned in the news?
- With reference to communications technologies, what is/are the difference/differences between LTE (Long-Term E…
- In the context of digital technologies for entertainment, consider the following statements: 1. In Augmented R…
- Consider the following statements: A digital signature is __________ 1. an electronic record that identifies t…
- In the context of wearable technology, which of the following tasks is/are accomplished by wearable devices? 1…
- For the measurement/ estimation of which of the following are satellite images/remote sensing data used? 1. Ch…
- Atal Innovation Mission is set up under the:
- Consider the following statements: 1. According to the Indian Patents Act, a biological process to create a se…
UPSC 2018
- In which of the following areas can GPS technology be used? 1. Mobile phone operations 2. Banking operations 3…
- With reference to India’s satellite launch vehicles, consider the following statements: 1. PSLVs launch the sa…
- Consider the following statements: 1. The Earth’s magnetic field has reversed every few hundred thousand years…
- ‘3D printing’ has applications in which of the following? 1. Preparation of confectionery items 2. Manufacture…
UPSC 2017
- What is the application of Somatic Cell Nuclear Transfer Technology?
- With reference to agriculture in India, how can the technique of ‘genome sequencing’, often seen in the news, …
- Consider the following statements: 1. In tropical regions, Zika virus disease is transmitted by the same mosqu…
- Consider the following pairs: Commonly used/ consumed materials Unwanted or controversial chemi- cals likely t…
- In India, it is legally mandatory for which of the following to report on cyber security incidents? 1. Service…
- The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news …
- What is the purpose of the ‘evolved Laser Interferometer Space Antenna (eLISA)’ project?
- Organic Light Emitting Diodes (OLEDs) are used to create digital displays in many devices. What are the advant…
UPSC 2016
- Which of the following statements is/are correct? Viruses can infect 1. Bacteria 2. Fungi 3. Plants Select the…
- With reference to prepackaged items in India, it is mandatory for the manufacturer to put the following inform…
- Which of the following statements is/are correct? Virus can infect 1. Bacteria 2. Fungi 3. Plants Select the c…
- With reference to ‘LiFi’, recently in the news, which of the following statements is/are correct? 1. It uses l…
- With reference to ‘Astrosat’, the astronomical observatory launched by India, which of the following statement…
- Consider the following statements: The Mangalyaan launched by ISRO 1. is also called the Mars Orbiter Mission …
- India is an important member of the ‘International Thermonuclear Experimental Reactor’. If this experiment suc…
- With reference to 'Astrosat', the astronomical observatory launched by India, which of the following statement…
UPSC 2015
- With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correc…
- With reference to the use of nanotechnology in the health sector, which of the following statements is/are cor…
- In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle de…
- With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements…
- With reference to ‘fuel cells’ in which hydrogen- rich fuel and oxygen are used to generate electricity, consi…
- Which of the following statements is/are correct regarding National Innovation Foundation-India (NIF)? 1. NIF …
UPSC 2014
- Consider the following diseases: 1. Diphtheria 2. Chickenpox 3. Smallpox Which of the above diseases has/have …
- In addition to fingerprint scanning, which of the following can be used in the biometric identification of a p…
- Which of the following pairs is/are correctly matched? Spacecraft Purpose 1. Cassini-Huygens Orbiting the Venu…
- Which one of the following is the process involved in photosynthesis?
- Which of the following statements is/are correct regarding vegetative propagation of plants? 1. Vegetative pro…
- Which of the following is/are the example/ examples of chemical change? 1. Crystallisation of sodium chloride …
- Consider the following techniques/phenomena: 1. Budding and grafting in fruit plants 2. Cytoplasmic male steri…
- Consider the following statements: 1. Maize can be used for the production of starch. 2. Oil extracted from ma…
- With reference to technology for solar power production, consider the following statements: 1. Photovoltaics i…
- Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth? 1. Volcanic action 2. …
- Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic a…
UPSC 2013
- Recombination DNA technology (Genetic Engineering) allows genes to be transferred: 1. Across different species…
- Consider the following minerals: 1. Calcium 2. Iron 3. Sodium Which of the minerals given above is/are require…
- Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of ener…
- Which of the following diseases can be transmitted from one person to another through tattooing? 1. Chikunguny…
- Consider the following statements: 1. Size of the sun at dusk 2. Colour of the sun at dawn 3. Moon being visib…
- The efforts to detect the existence of the Higgs boson particle have become frequent news in the recent past. …
- Fruits stored in a cold chamber exhibit longer storage life because
- Ball bearings are used in bicycles, cars, etc., because –
- Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are respon…
- Many transplanted seedlings do not grow because:
UPSC 2012
- What are the reasons for the people’s resistance to the introduction of Bt brinjal in India? 1. Bt brinjal has…
- Other than resistance to pests, what are the prospects for which genetically engineered plants have been creat…
- Consider the following kinds of organisms: 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of t…
- What is the role of ultraviolet (UV) radiation in the water purification systems? 1. It inactivates/kills the …
- With reference to ‘stem cells’, frequently in the news, which of the following statements is/are correct? 1. S…
- Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In thi…
- Graphene has been frequently in the news recently. What is its importance? 1. It is a two-dimensional material…
- Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what stil…
- Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?
- Consider the following statements: If there were no phenomenon of capillarity 1. It would be difficult to use …
UPSC 2011
- At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chro…
- Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antio…
- An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Ear…
- Which is the difference between asteroids and comets? 1. Asteroids are small rocky planetoids, while comets ar…
- Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in su…
- Microbial fuel cells are considered a source of sustainable energy. Why? 1. They use living organisms as catal…
- The function of heavy water in a nuclear reactor is to
- A company marketing food products advertises that its items do not contain trans fats. What does this campaign…
- What is the difference between a CFL and an LED lamp? 1. To produce light, a CFL uses mercury vapour and phosp…
- Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like…
- Recently, “oilzapper” was in the news. What is it?
- A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the …
- A new optical disc format known as the Blu- ray Disc (BD) is becoming popular. In what way is it different fro…
- When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and d…
- A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why? 1. The presence of o…
- A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this i…
- Consider the following: 1. Photosynthesis 2. Respiration 3. Decay of organic matter 4. Volcanic action Which o…
UPSC 2010
- Consider the following: 1. Bluetooth device 2. Cordless phone 3. Microwave oven 4. Wi-Fi device Which of the a…
- Consider the following statements: The satellite Oceansat-2 launched by India helps in 1. estimating the water…
- In the context of space technology what is “Bhuvan”, recently in the news?
- Hydrogen fuel cell vehicles produce one of the following as “exhaust”:
- Excessive release of the pollutant carbon monoxide (CO) into the air may produce a condition in which oxygen s…
- Mon 863 is a variety of maize. It was in the news for the following reason:
- Other than Jatropha curcas, why is Pongamia pinnata also considered a good option for the production of bio- d…
UPSC 2009
- WiMAX is related to which one of the following
- In the context of Indian defence, consider the following statements: 1. The Shourya missile flies with a speed…
- Consider the following statements: 1. INS Sindhughosh is an aircraft carrier. 2. INS Viraat is a submarine. Wh…
- In the year 2008, which one of the following conducted a complex scientific experiment in which sub-atomic par…
- In a dry cell (battery), which of the following are used as electrolytes?
- In making the saffron spice, which one of the following parts of the plant is used?
- Consider the following statements: 1. The sweet orange plant is propagated by grafting technique. 2. The Jasmi…
- In the context of Indian wild life, the flying fox is a
- With reference to the evolution of living organisms, which one of the following sequences is correct?
- The Panda belongs to the same family as that of
- The marine animal called Dugong which is vulnerable to extinction is
UPSC 2008
- ISRO successfully conducted a rocket test using cryogenic engines in the year 2007. Where is the test stand us…
- From which one of the following did India buy the Barak anti-missile defence systems?
- In the context of the Indian defence, what is “Dhruv”?
- In which one of the following locations is the International Thermonuclear Experimental Reactor (ITER) project…
- Consider the following statements in respect of a jet engine and a rocket: 1. A jet engine uses the surroundin…
- Consider the following: 1. Rice fields 2. Coal mining 3. Domestic animals 4. Wet lands Which of the above are …
- What is the pH level of blood of a normal person?
- Assertion (A): In human body, liver has important role in fat digestion. Reason (R): Liver produces two import…
UPSC 2007
- Consider the following statements: 1. In November, 2006 DRDO successfully conducted the interception test usin…
- What is the Galileo Project which has been in the news recently?
- Four wires of the same material and of dimensions as under are stretched by a load of the same magnitude separ…
- Consider the following statements: 1. If magenta and yellow coloured circles intersect, the intersected area w…
- Consider the following statements : 1. A flute of smaller length produces waves of lower frequency. 2. Sound t…
- Which one of the following parts of the pitcher plant becomes modified into a pitcher?
- Which of the following types of light are strongly absorbed by plants?
- In the human body, which structure is the appendix attached to?
- In human body, which one of the following hormones regulates blood calcium and phosphate?
- How do most insects respire?
- In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?
UPSC 2006
- Consider the following statements: 1. ELISA test is employed as the first and most basic test for an individua…
- In which one of the following areas did the Indira Gandhi Centre for Atomic Research make significant progress…
- What is the approximate mean velocity with which the earth moves round the sun in its orbit?
- In which one among the following is the speed of sound maximum?
- Consider the following statements in respect of India advanced satellite INSAT–4A: 1. INSAT-4A was launched in…
- Which of the following substances are found in the beach sands of many parts of Kerala? 1. Ilmenite 2. Zircon …
- Assertion (A): Cellulose is used in making shatter- proof glass. Reason (R): Polysaccharides are not soluble i…
- Consider the following statements with reference to the human body: 1. The common bile duct releases its conte…
- Which one among the following is not a good source of nutritional calcium?
- Consider the following statements: 1. Caffeine, a constituent of tea and coffee is a diuretic. 2. Citric acid …
UPSC 2005
- Which one of the following is the landmark performance of Dr V. Mohan Reddy, an Indian, born doctor working in…
- Which one of the following is the correct sequence of the given substances in the decreasing order of their de…
- Consider the following statements: 1. Liquefied natural gas (LNG) is liquefied under extremely cold temperatur…
- Consider the following statements: 1. Dengue is a protozoan disease transmitted by mosquitoes. 2. Retro-orbita…
- Which of the following diseases of milching animals are infectious? 1. Foot and mouth disease 2. Anthrax 3. Bl…
- Assertion (A): All the proteins in our food are digested in small intestine only. Reason (R): The protein-dige…
- Assertion (A): Amoeba reproduces by fission. Reason (R): All unicellular organisms reproduce by asexual method…
- Assertion (A): The person with Diabetes insipidus feels thirsty. Reason (R): A person with Diabetes insipidus …
- Pneumoconiosis affects the workers who work mainly in
UPSC 2004
- Consider the following statements: 1. Adam Osborne introduced the first portable computer. 2. Ian Wilmut creat…
- Consider the following statements: 1. Smart card is a plastic card with an embedded microchip. 2. Digital tech…
- A weightless rubber balloon is filled with 200 cc of water. Its weight in water is equal to:
- The dry human body has an electric resistance of the order of magnitude of 10^4 ohm (10,000 ohm). This resista…
- Match List-I (Fuel gases) with List-II (Major constituents) and select the correct answer using the codes give…
- Consider the following statements: 1. Non-functioning of lachrymal gland is an important symptom of deficiency…
- In which organ of the human body, lymphocyte cells formed?
- Consider the following statements: 1. Toothless mammals such as Pangolins are not found in India. 2. Gibbon is…
- Assertion (A): Fatty acids should be a part of the balanced human diet. Reason (R): The cells of the human bod…
- Consider the following statements: 1. Femur is the longest bone in the human body. 2. Cholera is a disease cau…
UPSC 2003
- Consider the following statements: 1. India launched its first full-fledged meteorological satellite (METSAT) …
- Assertion (A): The weight of a body decreases with the increase of altitude on earth. Reason (R): The earth is…
- Consider the following statements: A 4-wheel vehicle moving in a sharp circular path at high speed will: 1. …
- An oil tanker partially filled with oil moves forward on a level road with uniform acceleration. The free surf…
- Consider the following statements: 1. Steam at 100°C and boiling water at 100°C contain the same amount of hea…
- Diffusion of light in the atmosphere takes place due to:
- Assertion (A) is false: Electron affinity generally decreases as you move down a group due to increasing atomi…
- The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is: 1. to keep …
- Which one of the following is produced during the formation of photochemical smog?
- Consider the following statements: 1. The common blue green algae, Spirogyra and Ulothrix, are found in both f…
- Assertion (A): Unsaturated fats are more reactive compared with the saturated fats. Reason (R): Unsaturated fa…
- Consider the following statements: 1. Molasses is a by-product of the sugar production process. 2. Bagasse obt…
- Consider the following conditions of a sick human body 1. Swollen lymph nodes 2. Sweating at night 3. Loss of …
- With reference to the work of human kidney, consider the following statements 1. After the waste is removed in…
- With reference to normal human beings, consider the following statements: 1. In response to the presence of HC…
UPSC 2002
- With reference to the latest developments in stem cell research, consider the following statements 1. The only…
- With reference to Indian satellites and their launchers, consider the following statements: 1. All the INSAT s…
- Assertion (A): Artificial satellites are always launched from the earth in the eastward direction. Reason (R):…
- The acceleration due to gravity (g) is given by: g = GM/R2, where; M is mass of the Earth remains constant, R,…
- Assertion (A): An iron ball floats on mercury but gets immersed in water. Reason (R): The specific gravity of …
- A solid cube gets completely immersed in water when a 0.2 kg mass is placed on it. If the mass is removed, the…
- A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the sam…
- Consider the following natural phenomena: 1. Terrestrial heating 2. Reflection of light 3. Refraction of light…
- Match List-I (Oxidation number) with List II (The element) and select the correct answer using the codes given…
- Assertion(A): Synthetic detergents can lather well in hard water. Reason (R): Synthetic detergents form solubl…
- In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as:
- Consider the following plants: 1. Bougainvillea 2. Carnations 3. Cocoa 4. Grapes Which of these plants are pro…
- In the context of organic evolution, the loss of limbs in snakes is explained by the phenomenon of
- When one gene controls two or more different characters simultaneously, the phenomenon is called:
- With reference to the human body, consider the following statements: 1. The production of somatotropin goes up…
- Foot and Mouth disease in animals, a current epidemic in some parts of the world, is caused by
- Match List-I (Indian wild life species) with List-II (Scientific names) and select the correct answer using th…
- Match List-I (Scientists) with List-II (Achievements) and select the correct answer using the codes given belo…
- Assertion (A): Drinking of whisky increases the frequency of urination. Reason (R): Alcohol intake speeds up t…
- Assertion (A): Human diet should compulsorily contains glycine, serine and tyrosine. Reason (R): Essential ami…
- Among living organisms, which one of the following is the most responsible factor for bringing about the origi…
- Ticks and mites are actually
UPSC 2001
- The American multinational company, Monsanto, has produced an insect-resistant cotton variety that is undergoi…
- If acceleration due to gravity on the moon is ge/6, then the mass of the body on the moon is:
- Consider the following statements: A simple pendulum is set into oscillation. Then: 1. The acceleration is zer…
- Which of the following distance-time graph (x-t) represents one-dimensional uniform motion?
- Assertion (A): A piece of copper and a piece of glass are heated to the same temperature. When touched, therea…
- Assertion (A): The boiling point of water decreases as the altitude increases. Reason (R): The atmospheric pre…
- When water is heated from 0°C to 10°C. Its volume:
- When light waves pass from air to glass, the variables affected are:
- Two wires have their lengths, diameters and resistivities all in the ratio of 1: 2 If the resistance of the th…
- Consider the following statements: In a nuclear reactor, self-sustained chain reaction is possible, because: 1…
- A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in:
- Which one of the following is NOT radioactive?
- Which of the following features of DNA makes it uniquely suited to store and transmit genetic information from…
- “Metastasis” is the process by which:
- Match List-I with List-II and select the correct answer using the codes given below: List-I (Substance) List-I…
- Antigen is a substance which:
- Consider the following statements 1. Tapeworm is a hermaphrodite. 2. Round-worm has separate sexes. 3. Filaria…
UPSC 2000
- Assertion (A): “DNA finger printing” has become a powerful tool to establish paternity and identity of crimina…
- Insect-resistant cotton plants have been genetically engineered by inserting a gene from a /an
- The memory of a computer is commonly expressed in terms of kilobytes or megabytes. A byte is made up of:
- Consider the following features of newer models of motor cars: 1. Radial tyres 2. Streamlined body 3. Multi…
- Assertion (A): A man standing on a completely frictionless surface can propel himself by whistling. Reason (…
- Frames Per Second (FPS) is a measure of how many individual frames (images) are displayed in one second of vid…
- When a CD (compact disc used in audio and video systems) is seen in sunlight, rainbow-like colours are seen. T…
- Fluorescent tubes are fitted with a choke. The choke coil:
- A ‘black hole’ is a body in space which does not allow any radiation to come out. This property is due to its:
- C is matched with 1: Positrons, the antimatter counterparts of electrons, possess fractional spin, matching th…
- Most of the explosions in mines occur due to the mixing of:
- Which one of the following organisms can serve as a biofertilizer for rice crops?
- Phytotron is a facility to:
- Soft drinks such as colas contain significant quantities of:
- Canola refers to a special type of oil seed mustard varieties bred for human consumption. The main characteris…
- Assertion (A): In human beings, the females play a major role in determining the sex of the offspring. Reason …
- At which stage in its life cycle, does the silkworm yield the fibre of commerce?
- Match List-I (Disease) with List-II (Types of disease) and select the correct answer using the codes given bel…
- The blood glucose level is commonly expressed as:
- Match List-I (Endocrine glands) with List-II (Hormones secreted) and select the correct answer using the codes…
UPSC 1999
- Assertion (A): Dolly was the first cloned mammal. Reason (R): Dolly was produced by in vitro fertilization.
- A hunter aims his gun at a point between the eyebrows of a monkey sitting on a branch of a tree. Just as he f…
- Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the lis…
- Consider the following statements: 1. If a person looks at a coin which is in a bucket of water, the coin will…
- Consider the following statements: An ordinary light bulb has a rather short life because the: 1. filament wir…
- Consider the following statements regarding a motor car battery: 1. The voltage is usually 12 V. 2. Electrolyt…
- Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because:
- Cobalt-60 is commonly used in radiation therapy because it emits:
- Statement 1 is correct: Hard water, rich in calcium and magnesium, can contribute to dietary intake of these m…
- Match List-I (Naturally occurring substances) with List-II (Elements) and select the correct answer using the …
- Which one of the following is a useful functional association between fungi and the roots of higher plants?
- Endoscopy, a technique used to explore the stomach or other inner parts of the body is based on the phenomenon…
- Match List-I (Drugs/Chemicals) with List -II (Their uses) and select the correct answer using the codes given …
- Which one of the following genetic diseases is sex- linked?
- Lathyrism is caused by excessive consumption of:
UPSC 1998
- One astronomical unit is the average distance between:
- Match the names of outstanding Indian scientists given in List I with area of their specialized work given in …
- Which one of the following elements is essential for the construction of nuclear reactors?
- Consider the following statements : Coke is one of the materials of the charge added to blast furnaces for the…
- Given below: Assertion (A): Phenyl is used as a household germicide. Reason (R): Phenyl is phenol derivative a…
- Statement 1 is correct: Acetylene is extensively used in the welding industry due to the high flame temperatur…
- The water pollution in river is measured by the dissolved amount of:
- Ergotism is due to consumption of:
- Which one of the following types of micro organisms is most widely used in industries?
- Match List-I with List-II and select the correct answer by using the codes given below the lists List-I List-I…
- A tree species in Mauritius failed to reproduce because of the extinction of a fruit-eating bird. Which one of…
- The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with release of e…
- Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains:
- Match List-I with List-II and select the answer using the codes given below: List-I (Disease) List-II (Organis…
- Haemophilia is a genetic disorder which leads to:
UPSC 1997
- The tendency of a liquid drop to contract and occupy minimum area is due to:
- Which one of the following is a vector quantity?
- A girl is swinging on a swing in a sitting position. When the girl stands up, the period of swing will:
- A boy standing at the point O in the given diagram throws a ball three times with the same force, but projecti…
- The tail of a comet is directed away from the sun because:
- The most reactive among the halogens is:
- The characteristic odour of garlic is due to:
- Which one of the following is an active component of oil of clove?
- Which one of the following was used as a chemical weapon in the first world war?
UPSC 1996
- Total internal reflection can take place when light travels from:
- Domestic electrical wiring is basically a:
- Consider the following statements: At the present level of technology available in India, solar energy can be …
- The alpha particle carries two positive charges. Its mass is very nearly equal to that of:
- Physico-chemical characteristics of water in water sources undergo changes due to:
- It is possible to produce seedless tomato fruits by:
- Match List-I (Physiological processes) with List-II (Cell organelles) and select the correct answer by using t…
- Which one of the following is a modified stem?
- Of the four landmarks in medical history given below, which one was the first to take place?
- According to the World Health Organisation (WHO), the disease which causes the death of the largest number of …
- The nutritional deficiency condition that needs to be given top priority for remedial action in India today is…
- Match List-I with List-II and select the correct answer by using the codes given below: List- I List-II A. Vit…
- Which of the following are associated with Diabetes mellitus, a common disease in adults? 1. Higher sugar leve…
- Consider the following statements. AIDS -is transmitted: 1. By sexual intercourse 2. By blood transfusion 3. B…
- Which of the following would lead to malnutrition? 1. Overnutrition 2. Undernutrition 3. Imbalanced nutrition …
- Fat present below the skin surface in our body, acts as a barrier against:
- The major chemical compound found in kidney stones is:
Other
- Three identical vessels A, B and C are filled with water, mercury and kerosene respectively up to an equal hei…
- Assertion (A): A jet aircraft moving at Mach Number equal to 1 travels faster at an altitude of 15 km than whi…
- Assertion (A): A stick is dipped in water in a slanting position. If observed sideways, the stick appears shor…
- An amalgam is an alloy of mercury with another metal. While many metals can form amalgams, iron does not readi…
- Assertion (A): The main constituent of the liquefied petroleum gas is methane. Reason (R): Methane can be used…