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Prelims

UPSC Prelims Questions

Practice UPSC Prelims MCQs by subject and year. Free questions with explanations for focused revision.

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Q.3889·Miscellaneous·2022·Easy

What is the correct sequence of resistivity of silver, nichrome and glass at room temperature?

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Q.3890·Miscellaneous·2022·Easy

What are the last three digits in the multiplication of 4321012345 × 98766789 ?

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Q.3891·Miscellaneous·2022·Easy

A real number x is such that the sum of the number and four times its square is the least. What is that number?

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Q.3892·Miscellaneous·2022·Easy

A person walks 100 m Westward, then turns left and walks 100 m. He then takes 225° turn clockwise. In which direction is he walking now?

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Q.3893·Miscellaneous·2022·Easy

On one side of a 1.01 km long road, 101 plants are planted at equal distance from each other. What is the total distance between 5 consecutive plants?

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Q.3894·Miscellaneous·2022·Easy

Let p be a two-digit number and q be the number consisting of same digits written in reverse order. If p x q = 2430, then what is the difference between p and q?

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Q.3895·Miscellaneous·2022·Easy

How many seconds in total are there in x weeks, x days, x hours. x minutes and X seconds?

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Q.3896·Miscellaneous·2022·Easy

The increase in the price of a certain item was 25%. Then the price was decreased by 20% and then again increased by 10%. What is the resultant increase in the price?

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Q.3897·Miscellaneous·2022·Easy

When 70% of a number x is added to another number y, the sum becomes 165% of the value of y. When 60% of the number x is added to another number z, then the sum becomes 165% of the value of z. which one of the following is correct?

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Q.3898·Miscellaneous·2022·Easy

Natural selection cannot anticipate future environments on the earth. Therefore, the set of existing organisms can never be fully prepared for environmental catastrophes that await life. An outcome of this is the extinction of those species which cannot overcome environmental adversity. This failure to survive, in modern terms, can be attributed to the genomes which are unable to withstand geological vagaries or biological mishaps infections, diseases and so on). In biological evolution on the earth, extinction of species has been a major feature. The earth may presently have up to ten million species, yet more than 90% of species that have ever lived on the earth are now extinct. Once again, the creationist doctrines fail to satisfactorily address why a divine creator will firstly bother to create millions of species and then allow them to perish. The Darwinian explanation for extinct life is once again simple, elegant and at once convincing organisms go extinct as a function of environmental or biological assaults for which their inheritance deems them ill-equipped. Therefore, the so-called Darwinian theory of evolution is not a theory at all. Evolution happens-this is a fact. The mechanism of evolution (Darwin proposed natural selection) is amply supported by scientific data. Indeed, to date no single zoological, botanical, geological, paleontological, genetic or physical evidence has refuted either of the central two main Darwinian ideas. If religion is not taken into consideration, Darwinian laws are acceptable just like the laws proposed by Copernicus, Galileo, Newton and Einstein-sets of natural laws that explain natural phenomena in the universe. With reference to the passage, the following assumptions have been made: 1. Only species that have the ability to overcome environmental catastrophes will survive and perpetuate. 2. More than 90% of the species on the earth are in the danger of getting extinct due to drastic changes in the environment. 3. Darwin's theory explains all the natural phenomena, Which of the above assumptions is/are valid?

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Q.3899·Miscellaneous·2022·Easy

Two Statements followed by four Conclusions are given below. You have to take the Statements to be true even if they seem to be at variance from the commonly known facts. Read all the Conclusions and then decide which of the given Conclusions logically follows follow from the Statements, disregarding the commonly known facts : Statement-1 : All pens are books. Statement-2 : No chair is a pen. Conclusion-I : All chairs are books. Conclusion-II : Some chairs are pens. Conclusion-III : All books are chairs. Conclusion-IV : No chair is a book. Which one of the following is correct?

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Q.3900·Miscellaneous·2022·Easy

Three Statements followed by three Conclusions are given below. You have to take the Statements to be true even if they seem to be at variance from the commonly known facts. Read all the Conclusions and then decide which of the given Conclusions logically follows/ follow from the Statements, disregarding the commonly known facts: Statement-1: Some doctors are teachers. Statement-2: All teachers are engineers. Statement-3: All engineers are scientists. Conclusion-I: Some scientists are doctors. Conclusion-II: All engineers are doctors. Conclusion-III: Some engineers are doctors. Which one of the following is correct?

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Q.3901·Miscellaneous·2022·Easy

Eight students A, B, C, D, E, F, G and H sit around a circular table, equidistant from each other, facing the centre of the table, not necessarily in the same order. B and D sit neither adjacent to C nor opposite to C A sits in between E and D. and sits in between B and H. Which one of the following is definitely correct?

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Q.3902·Miscellaneous·2022·Easy

The demographic dividend, which has begun in India and is expected to last another few decades, is a great window of opportunity. The demographic dividend is basically a swelling in the working age population, which conversely means that the relative ratio of very young and very old will, for a while, be on the decline. From the experience of Ireland and China, we know that this can be a source of energy and an engine of economic growth. The demographic dividend tends to raise a nation's savings rate since in any nation, it is the working age population that is the main saver. And since the savings rate is an important driver of growth, this should help elevate our growth rate. However, the benefits of demographic dividend depend on the quality of the working age population. And this implies bringing back the importance of education, acquisition of skills and human capital.With reference to the passage, which of the following inferences can be drawn? 1. Demographic dividend is an essential condition for a country to rapidly increase its economic growth rate. 2. Promotion of higher education is an essential condition for a country for its rapid economic growth. Select the correct answer using the code given below.

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Q.3903·Miscellaneous·2022·Easy

Five friends P. O, X, Y and Z purchased some notebooks. The relevant information is given below: 1. Z purchased 8 notebooks more than X did. 2. P and Q together purchased 21 notebooks. 3. O purchased 5 notebooks less than P did. 4. X and Y together purchased 28 notebooks. 5. P purchased 5 notebooks more than X did. If each notebook is priced 40, then what is the total cost of all the notebooks?

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Q.3904·Miscellaneous·2022·Easy

Consider the following statements in respect of a rectangular sheet of length 20 cm and breadth 8 cm: 1. It is possible to cut the sheet exactly into 4 square sheets. 2. It is possible to cut the sheet into 10 triangular sheets of equal area. Which of the above statements is are correct?

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Q.3905·Miscellaneous·2022·Easy

A man started from home at 14:30 hours and drove to village, arriving there when the village clock indicated 15:15 hours. After staying for 25 minutes, he drove back by a different route of length 1.25 times the first route at a rate twice as fast reaching home at 16:00 hours. As compared to the clock at home, the village clock is

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Q.3906·Miscellaneous·2022·Easy

A person X wants to distribute some pens among six children A B C D E and F. Suppose A gets twice the number of pens received by B, three times that of C, four times that of D, five times that of E and six times that of F. What is the minimum number of pens X should buy so that the number of pens each one gets is an even number?

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