Science Science and Technology
Science and Technology: most repeated questions
Questions that have come up in more than one paper, matched by what they ask rather than exact wording. Most repeated first.
- 13×Asked in 2075, 2074What is the full form of CNG?Solved1
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- What is the full form of CNG?SEE 2075
- What is the full form of CD?SEE 2074
- What is the full form of CPU?SEE 2074
- What is the full form of HTTP?SEE 2074
- What is the full form of LAN?SEE 2074
- What is the full form of LED?SEE 2074
- What is the full form of PDF?SEE 2074
- What is the full form of RAM?SEE 2074
- What is the full form of ROM?SEE 2074
- What is the full form of URL?SEE 2074
- What is the full form of USB?SEE 2074
- What is the full form of Wi Fi?SEE 2074
- What is the full form of WWW?SEE 2074
- 11×Asked in 2075a) What is meant by the term "biotechnology"? [1] b) Write the applications of biotechnology. [2] c) What are the advantages and disadvantages of biotechnology? [2]Solved5
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- a) What is meant by the term "biotechnology"? [1] b) Write the applications of biotechnology. [2] c) What are the advantages and disadvantages of biotechnology? [2]SEE 2075
- a) What is meant by the term "biotechnology"? Explain the applications of biotechnology in medicine. [5] b) What is meant by the term "nanotechnology"? Explain the applications of nanotechnology in…SEE 2075
- What is meant by the term "biotechnology"? Explain the applications of biotechnology in agriculture.SEE 2075
- What is meant by the term "biotechnology"? Write any three applications of biotechnology. How can we utilize biotechnology?SEE 2075
- What is meant by the term "e commerce"? Explain the advantages and disadvantages of e commerce.SEE 2075
- What is meant by the term "nanotechnology"? Explain the applications of nanotechnology.SEE 2075
- What is meant by the term "nanotechnology"? Write any three applications of nanotechnology. How can we utilize nanotechnology?SEE 2075
- What is meant by the term "online learning"? Explain the advantages and disadvantages of online learning.SEE 2075
- What is meant by the term "social media"? Explain the advantages and disadvantages of social media.SEE 2075
- What is meant by the term "tele education"? Explain the advantages and disadvantages of tele education.SEE 2075
- What is meant by the term "telemedicine"? Explain the advantages and disadvantages of telemedicine.SEE 2075
- 10×Asked in 2075What is meant by the term "biomedical engineering"? Write any three applications of biomedical engineering. How can we utilize biomedical engineering?Solved5
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- What is meant by the term "biomedical engineering"? Write any three applications of biomedical engineering. How can we utilize biomedical engineering?SEE 2075
- What is meant by the term "chemical engineering"? Write any three applications of chemical engineering. How can we utilize chemical engineering?SEE 2075
- What is meant by the term "civil engineering"? Write any three applications of civil engineering. How can we utilize civil engineering?SEE 2075
- What is meant by the term "computer engineering"? Write any three applications of computer engineering. How can we utilize computer engineering?SEE 2075
- What is meant by the term "electrical engineering"? Write any three applications of electrical engineering. How can we utilize electrical engineering?SEE 2075
- What is meant by the term "electronic engineering"? Write any three applications of electronic engineering. How can we utilize electronic engineering?SEE 2075
- What is meant by the term "environmental engineering"? Write any three applications of environmental engineering. How can we utilize environmental engineering?SEE 2075
- What is meant by the term "genetic engineering"? Explain the applications of genetic engineering.SEE 2075
- What is meant by the term "genetic engineering"? Write any three applications of genetic engineering. How can we perform genetic engineering?SEE 2075
- What is meant by the term "mechanical engineering"? Write any three applications of mechanical engineering. How can we utilize mechanical engineering?SEE 2075
- 9×Asked in 2075a) What is meant by the term "chemical reaction"? [1] b) Write the characteristics of a chemical reaction. [2] c) Write the examples of chemical reactions in daily life. [2]Solved5
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- a) What is meant by the term "chemical reaction"? [1] b) Write the characteristics of a chemical reaction. [2] c) Write the examples of chemical reactions in daily life. [2]SEE 2075
- a) What is meant by the term "chemical reaction"? Explain the types of chemical reactions with examples. [5] b) What is meant by the term "chemical equation"? Explain the balancing of chemical…SEE 2075
- a) What is meant by the term "combustion reaction"? [1] b) Write the examples of combustion reactions. [2] c) What are the characteristics of combustion reactions? [2]SEE 2075
- a) What is meant by the term "displacement reaction"? [1] b) Write the examples of displacement reactions. [2] c) What are the characteristics of displacement reactions? [2]SEE 2075
- a) What is meant by the term "endothermic reaction"? [1] b) Write the examples of endothermic reactions. [2] c) What are the characteristics of endothermic reactions? [2]SEE 2075
- a) What is meant by the term "exothermic reaction"? [1] b) Write the examples of exothermic reactions. [2] c) What are the characteristics of exothermic reactions? [2]SEE 2075
- a) What is meant by the term "oxidation"? [1] b) Write the chemical equation for the reaction between magnesium and oxygen. [2] c) What is the valency of magnesium in this reaction? [2]SEE 2075
- What is meant by the term "chemical reaction"? Explain the types of chemical reactions with examples.SEE 2075
- What is meant by the term "chemical reaction"? Write any three types of chemical reactions. How can we represent a chemical reaction?SEE 2075
- 8×Asked in 2075a) What is meant by the term "acid rain"? [1] b) Write the causes of acid rain. [2] c) What are the effects of acid rain? [2]Solved5
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- a) What is meant by the term "acid rain"? [1] b) Write the causes of acid rain. [2] c) What are the effects of acid rain? [2]SEE 2075
- a) What is meant by the term "greenhouse effect"? [1] b) Write the causes of the greenhouse effect. [2] c) How can we reduce the greenhouse effect? [2]SEE 2075
- a) What is meant by the term "pollution"? [1] b) Write the causes of water pollution. [2] c) How can we prevent water pollution? [2]SEE 2075
- a) What is meant by the term "pollution"? Explain the causes and effects of water pollution. [5] b) What is meant by the term "conservation of water"? Explain the measures to be taken for the…SEE 2075
- What is meant by the term "digital divide"? Explain the causes and effects of the digital divide.SEE 2075
- What is meant by the term "greenhouse effect"? Explain the causes and effects of the greenhouse effect.SEE 2075
- What is meant by the term "pollution"? Explain the causes and effects of air pollution.SEE 2075
- What is meant by the term "pollution"? Write any three causes of air pollution. How can we control air pollution?SEE 2075
- 6×Asked in 2075a) What is meant by the term "acid"? Explain the properties of acids with examples. [5] b) What is meant by the term "base"? Explain the properties of bases with examples. [5]Solved10
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- a) What is meant by the term "acid"? Explain the properties of acids with examples. [5] b) What is meant by the term "base"? Explain the properties of bases with examples. [5]SEE 2075
- What is meant by the term "acid"? Explain the properties of acids with examples.SEE 2075
- What is meant by the term "acid"? Write any three properties of acids. How can we identify acids?SEE 2075
- What is meant by the term "base"? Explain the properties of bases with examples.SEE 2075
- What is meant by the term "base"? Write any three properties of bases. How can we identify bases?SEE 2075
- What is meant by the term "salts"? Write any three properties of salts. How can we prepare salts from acids and bases?SEE 2075
- 6×Asked in 2075a) What is meant by the term "conservation of energy"? [1] b) Write the principle of conservation of energy. [2] c) Give examples of energy conservation in daily life. [2]Solved5
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- a) What is meant by the term "conservation of energy"? [1] b) Write the principle of conservation of energy. [2] c) Give examples of energy conservation in daily life. [2]SEE 2075
- a) What is meant by the term "energy"? Explain the forms of energy with examples. [5] b) What is meant by the term "conservation of energy"? Explain the law of conservation of energy with examples.…SEE 2075
- What is meant by the term "conservation of energy"? Explain the law of conservation of energy with an example.SEE 2075
- What is meant by the term "energy"? Explain the forms of energy with examples.SEE 2075
- What is meant by the term "energy"? Write any three forms of energy. What is the SI unit of energy?SEE 2075
- What is meant by the term "law of conservation of mass"? Explain with an example. How can we verify the law of conservation of mass?SEE 2075
- 6×Asked in 2075a) What is meant by the term "information technology"? Explain the applications of information technology in healthcare. [5] b) What is meant by the term "communication technology"? Explain the applications of communication technology in healthcare. [5]Solved10
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- a) What is meant by the term "information technology"? Explain the applications of information technology in healthcare. [5] b) What is meant by the term "communication technology"? Explain the…SEE 2075
- What is meant by the term "blockchain technology"? Explain the applications of blockchain technology.SEE 2075
- What is meant by the term "communication technology"? Explain the applications of communication technology.SEE 2075
- What is meant by the term "information technology"? Explain the applications of information technology in education.SEE 2075
- What is meant by the term "information technology"? Write any three applications of information technology. How can we utilize information technology?SEE 2075
- What is meant by the term "space technology"? Explain the applications of space technology.SEE 2075
- 6×Asked in 2075a) What is meant by the term "non renewable energy"? [1] b) Write the examples of non renewable energy sources. [2] c) What are the disadvantages of using non renewable energy sources? [2]Solved5
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- a) What is meant by the term "non renewable energy"? [1] b) Write the examples of non renewable energy sources. [2] c) What are the disadvantages of using non renewable energy sources? [2]SEE 2075
- a) What is meant by the term "renewable energy"? [1] b) Write the examples of renewable energy sources. [2] c) What are the advantages of using renewable energy sources? [2]SEE 2075
- What is meant by the term "non renewable energy"? Explain the types of non renewable energy with examples.SEE 2075
- What is meant by the term "non renewable energy"? Write any three sources of non renewable energy. How can we conserve non renewable energy sources?SEE 2075
- What is meant by the term "renewable energy"? Explain the types of renewable energy with examples.SEE 2075
- What is meant by the term "renewable energy"? Write any three sources of renewable energy. How can we utilize renewable energy sources?SEE 2075
- 4×Asked in 2082, 20815. Study the given figures and write any two differences between them. [figure in the original paper]Solved2
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- 5. Study the given figures and write any two differences between them. [figure in the original paper]SEE 2082, Gandaki Province
- Study the given diagram: [figure in the original paper] a) Write down the name of the parts 'A'. b) Write a function of part 'B'. c) Write any two differences between parts 'C' and 'D'.SEE 2082, Madhesh Province
- Study the given figures and write any two differences between them on the basis of defect of vision. [figure in the original paper]SEE 2082, Karnali Province
- Identify the following figures and write any two differences between them. चित्र (Figure) A चित्र (Figure) B : : [figure in the original paper] [figure in the original paper]SEE 2081, Gandaki Province
- 3×Asked in 2074a) What is an operating system? [1] b) Write any four functions of an operating system. [4]Solved5
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- 3×Asked in 2075a) What is meant by the term "fuse"? [1] b) How does a fuse work? [2] c) What are the advantages of using a fuse? [2]Solved5
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- a) What is meant by the term "fuse"? [1] b) How does a fuse work? [2] c) What are the advantages of using a fuse? [2]SEE 2075
- a) What is meant by the term "step up transformer"? [1] b) Write the uses of a step up transformer. [2] c) How does a step up transformer work? [2]SEE 2075
- What is meant by the term "work"? Explain the types of work with examples.SEE 2075
- 3×Asked in 2082, 2081Calculate the amount of heat energy required to raise the temperature of 500\ g of water from 30^ to 90^Solved
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- Calculate the amount of heat energy required to raise the temperature of 500\ g of water from 30^ to 90^SEE 2082, Koshi Province
- Calculate the heat energy required to change the temperature from 20^ to 70^ of a metal having specific heat capacity is 460\ J/kg^ C .SEE 2082
- How much heat energy is required to raise the temperature 700 g water from 5^ to 40^ ?SEE 2081, Bagmati Province
- 3×Asked in 2082Check the validity of equation S = ut + 12at^2 , by unit wise analysis.Solved2
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- Check the validity of equation S = ut + 12at^2 , by unit wise analysis.SEE 2082, Karnali Province
- Check the validity of the equation v = u + at^2 by its unit wise analysis.SEE 2082, Koshi Province
- Test the validity of s = ut + 12 a^2t by unit wise analysis.SEE 2082, Lumbini Province
- 3×Asked in 2081, 2075, 2074What difficulties would have Mendel faced if he had used apple plant instead of pea for his experiment? Write in two points.Solved2
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- What difficulties would have Mendel faced if he had used apple plant instead of pea for his experiment? Write in two points.SEE 2081, Bagmati Province
- Write any three difficulties Mendel would have faced if he carried his experiment on human instead of pea plants.SEE 2075
- State any two difficulties Mendel would have faced if he had carried his experiment on human instead of pea plant.SEE 2074
- 3×Asked in 2082, 2081Study the given concept map and write the name of P and Q bees, where P and Q are formed by different processes. [figure in the original paper]Solved
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- Study the given concept map and write the name of P and Q bees, where P and Q are formed by different processes. [figure in the original paper]SEE 2082, Koshi Province
- Write the name of process X and Y in the given concept map. [figure in the original paper]SEE 2082, Karnali Province
- Study the concept map and write the function of Y and Z. [figure in the original paper]SEE 2081, Madhesh Province
- 3×Asked in 2075, 2074The SI unit of electric current is .Solved1
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- 3×Asked in 2075, 2074Write the chemical formula of washing soda.Solved1
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- 2×Asked in 2082, 2075a) A convex lens has the focal length of 4 cm. draw a ray diagram for the image formed by this convex lens when an object is kept at 8.5 cm in front of the lens. Also, calculate out its power. [2] b) Which lens is used to remedy short sightedness? Show with…Solved4
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- a) A convex lens has the focal length of 4 cm. draw a ray diagram for the image formed by this convex lens when an object is kept at 8.5 cm in front of the lens. Also, calculate out its power. [2]…SEE 2082, Koshi Province
- Draw a ray diagram of an image formed when an object kept at a distance of 50\ cm from a convex lens having focal length 20\ cm . Write any two nature of image. Calculate the power of lens.SEE 2075
- 2×Asked in 2074a) What is a computer network topology? [1] b) Write any four types of computer network topologies. [4]Solved5
- 2×Asked in 2074a) What is a database? [1] b) Write any four advantages of a database. [4]Solved5
- 2×Asked in 2075a) What is meant by the term "isotopes"? [1] b) Write the examples of isotopes. [2] c) What are the uses of isotopes? [2]Solved5
- 2×Asked in 2075a) What is meant by the term "nuclear fusion"? [1] b) Write the equation for the nuclear fusion of hydrogen. [2] c) What are the advantages of nuclear fusion? [2]Solved5
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- a) What is meant by the term "nuclear fusion"? [1] b) Write the equation for the nuclear fusion of hydrogen. [2] c) What are the advantages of nuclear fusion? [2]SEE 2075
- What is meant by the term "nuclear fusion"? Write any three advantages of nuclear fusion. How can we achieve nuclear fusion?SEE 2075
- 2×Asked in 2075a) What is meant by the term "photosynthesis"? [1] b) Write the chemical equation for photosynthesis. [2] c) What are the factors affecting photosynthesis? [2]Solved5
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- a) What is meant by the term "photosynthesis"? [1] b) Write the chemical equation for photosynthesis. [2] c) What are the factors affecting photosynthesis? [2]SEE 2075
- What is meant by the term "photosynthesis"? Write the overall chemical equation of photosynthesis. What are the end products of photosynthesis?SEE 2075
- 2×Asked in 2082, 2081Convert/Calculate as per the instruction: i) (BCA) 16 = (?) 2 ii) (422) 10 = (?) 2 iii) (101) 2 (100) 2 = (?) 2 iv) (1111) 2 (11) 2Solved4
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- 2×Asked in 2082Copy the given ray diagram in your answer sheet and Complete. In which principle is it based? [figure in the original paper]Solved
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- 2×Asked in 2082Define the process which is shown in the figure and write any one application of it. [figure in the original paper]Solved
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- 2×Asked in 2075, 2074Pancreas is called mixed gland. Why?Solved2
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- 2×Asked in 2082, 2081Rewrite the given program after correcting the bugs: REM to add record in an existing file CLS OPEN "Rec.Dat" FOR OUTPUT AS 1 SE: INPUT "Enter Name, Class and Roll No."; Nm$, Cl, Rn INPUT 2, Nm$, Cl, Rn INPUT "More records (Y/N)?"; Y$ IF UCASE$(Y$)="Y" THEN…Solved2
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- Rewrite the given program after correcting the bugs: REM to add record in an existing file CLS OPEN "Rec.Dat" FOR OUTPUT AS 1 SE: INPUT "Enter Name, Class and Roll No."; Nm$, Cl, Rn INPUT 2, Nm$,…SEE 2082
- Rewrite the given program after correcting the bugs: REM to add record in an existing file. OPEN "student.dat" FOR OUT AS 2 TOP: INPUT "Enter Name, Class and Roll No."; SName$, C, RN INPUT 2,…SEE 2081
- 2×Asked in 2075What is meant by the term "artificial intelligence"? Explain the applications of artificial intelligence.Solved5
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- 2×Asked in 2075What is meant by the term "artificial satellite"? Explain the types of artificial satellites with examples.Solved5
- 2×Asked in 2075What is meant by the term "simple machine"? Explain the types of simple machines with examples.Solved5
- 2×Asked in 2075What is meant by the term "space probe"? Explain the objectives of space probes.Solved5
- 2×Asked in 2075What is meant by the term "stem cell"? Explain the applications of stem cells.Solved5
- 2×Asked in 2075, 2074What is the chemical name of plaster of paris?Solved1
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- 2×Asked in 2075, 2074What is the valency of nitrogen?Solved1
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- What is the valency of nitrogen?SEE 2075
- What is the valency of nitrogen?SEE 2074
- 2×Asked in 2075, 2074Which gas is filled in the electric bulb?Solved1
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- 2×Asked in 2082, 2075Write any one balanced chemical equation of a reaction that uses a catalyst.Solved
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- 2×Asked in 2082, 2081Write a function of worker bee done during of 1 3 days and 18 20 days of each.Solved
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- Write a function of worker bee done during of 1 3 days and 18 20 days of each.SEE 2082, Lumbini Province
- Write one function of each of worker bees do during 7 11 days and during 18 20 days.SEE 2081, Gandaki Province
- 2×Asked in 2081, 2075Write any two characteristics of worker bee.Solved2
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- Write any two characteristics of worker bee.SEE 2081, Bagmati Province
- Write any two differences between drone bee and worker bee.SEE 2075
- 2×Asked in 2082, 2081Write any two differences between open and closed universe.Solved
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- Write any two differences between open and closed universe.SEE 2082, Gandaki Province
- Write any two differences between close universe and open universe.SEE 2081, Gandaki Province
- 2×Asked in 2082, 2081Write any two differences between mitosis and meiosis cell division.Solved
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- Write any two differences between mitosis and meiosis cell division.SEE 2082, Koshi Province
- Write any two differences between mitosis and meiosis cell division.SEE 2081, Madhesh Province
- 2×Asked in 2082, 2081Write down the output of the given program and also show them in dry run table. DECLARE SUB Series () CALL Series END SUB Series N = 4 X = 1 DO WHILE X < 5 PRINT N N = N 10 + 4 X = X + 1 LOOP END SUBSolved2
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- Write down the output of the given program and also show them in dry run table. DECLARE SUB Series () CALL Series END SUB Series N = 4 X = 1 DO WHILE X < 5 PRINT N N = N 10 + 4 X = X + 1 LOOP END SUBSEE 2082
- Write down the output of the given program and show them in dry run table: DECLARE SUB Display (T$) T$="COMPUTER" CALL Display (T$) END SUB Display (T$) FOR C=1 TO LEN (T$) STEP 2 DS=MIDS (T$,C,1)…SEE 2081