UPSC Prelims 2020 · GS Paper I
Science questions from UPSC 2020
Review every Science question in the 2020 paper with its answer and study explanation, then launch the same set under timed exam conditions.
Topic distribution
All 2020 Science questions
Open any question for the full options, answer, explanation, and syllabus metadata.
Question 1 · Information Technology
With reference to "Blockchain Technology", consider the following statements : 1. It is a public ledger that everyone can inspect, but which no single user controls. 2. The structure and des...
Question 2 · Biotechnology
Consider the following statements : 1. Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent. 2. A person's genome can be edited before birth at...
Question 3 · Financial Services & Insurance
In India, under cyber insurance for individuals, which of the following benefits are generally covered, in addition to payment for the loss of funds and other benefits? 1. Cost of restoratio...
Question 4 · Space Technology
"The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft...
Question 5 · Renewable Energy
With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible pumps. 2. Solar power can be used for run...
Question 6 · Cell Biology
Which of the following statements are correct regarding the general difference between plant and animal cells ? 1. Plant cells have cellulose cell walls whilst animal cells do not. 2. Plant...
Question 7 · Science & Technology
Consider the following activities: 1. Spraying pesticides on a crop field 2. Inspecting the craters of active volcanoes 3. Collecting breath samples from spouting whales for DNA analysis At...
Question 8 · Information Technology
With reference to Visible Light Communication (VLC) technology, which of the following statements are correct? 1. VLC uses electromagnetic spectrum wavelengths 375 to 780 nm. 2. VLC is known...
Question 9 · Biotechnology
In the context of recent advances in human reproductive technology, "Pronuclear Transfer" is used for
Question 10 · Information Technology
With the present state of development, Artificial Intelligence can effectively do which of the following ? 1. Bring down electricity consumption in industrial units 2. Create meaningful shor...
Question 11 · Public Health
What is the importance of using Pneumococcal Conjugate Vaccines in India ? 1. These vaccines are effective against pneumonia as well as meningitis and sepsis. 2. Dependence on antibiotics th...
Question 12 · Nuclear Technology
In India, why are some nuclear reactors kept under "IAEA Safeguards" while others are not?
Question 13 · Cyber Security
In India, the term "Public Key Infrastructure" is used in the context of
Question 14 · Nanotechnology
With reference to carbon nanotubes, consider the following statements : 1. They can be used as carriers of drugs and antigens in the human body. 2. They can be made into artificial blood cap...