SSLC Science and Technology NIOS I Welcome to your SSLC Science and Technology NIOS I Total Questions: 50 Name Mobile No: 1. Who proposed the nuclear model of atom? Thomson Dalton Rutherford Bohr None Hint 2. Plants prepare their food by the process of: Respiration Digestion Transpiration Photosynthesis None Hint 3. Which particle determines the chemical properties of an atom? Proton Electron Neutron Nucleus None Hint 4. The basic unit of life is: Cell Tissue System Organ None Hint 5. Science is mainly based on: Tradition Belief Observation and experiment Imagination None Hint 6. The maximum number of electrons in the first shell is: 2 18 4 8 None Hint 7. Which gas is essential for respiration? Carbon dioxide Oxygen Nitrogen Hydrogen None Hint 8. Matter is anything that: Occupies space and has mass Can be seen Has colour Has smell None Hint 9. Which subatomic particle has no charge? Neutron Proton Ion Electron None Hint 10. The maximum number of electrons in the second shell is: 4 2 8 18 None Hint 11. Rusting of iron is an example of: Reversible change Temporary change Physical change Chemical change None Hint 12. The atomic number of an element represents the number of: Electrons only Nucleons Neutrons Protons None Hint 13. Which of the following is a communicable disease? Diabetes Tuberculosis Cancer Blood pressure None Hint 14. Which of the following is an isotope of hydrogen? Nitrogen Oxygen Helium Deuterium None Hint 15. The main function of the heart is to: Help breathing Pump blood Digest food Control brain None Hint 16. Mass number is the sum of: Protons and electrons Protons and neutrons Only neutrons Electrons and neutrons None Hint 17. The charge on an electron is: Variable Neutral Negative Positive None Hint 18. Friction always acts: Downward In the direction of motion Vertically upward Opposite to motion None Hint 19. The atomic mass of an element depends mainly on: Protons and neutrons Neutrons Electrons Protons None Hint 20. Atom is the smallest unit of: A solution An element A mixture A compound None Hint 21. Vaccination helps in: Curing diseases instantly Preventing diseases Increasing pain Spreading infection None Hint 22. Isotopes are atoms of the same element having: Same mass number Same atomic number Same chemical properties only Same number of neutrons None Hint 23. Which of the following is a physical change? Cooking of food Rusting of iron Burning of paper Melting of ice None Hint 24. Which technology helps in instant communication? Information technology Agriculture Mining Biotechnology None Hint 25. The SI unit of length is: Kilometre Metre Millimetre Centimetre None Hint 26. The number of neutrons in an atom is calculated by: Atomic number × 2 Mass number ÷ atomic number Atomic number – mass number Mass number – atomic number None Hint 27. Who discovered the electron? Bohr Rutherford J.J. Thomson Dalton None Hint 28. A positively charged ion is called: Anion Cation Atom Isotope None Hint 29. Atomic structure helps us understand: Motion of planets Weather changes Earthquakes Chemical bonding None Hint 30. Which vitamin is produced in the human body in sunlight? Vitamin C Vitamin A Vitamin D Vitamin B None Hint 31. Neutral atom means: Protons = electrons Electrons > protons Protons > electrons Neutrons = electrons None Hint 32. Which of the following is a renewable resource? Coal Petroleum Solar energy Natural gas None Hint 33. The nucleus of an atom contains: Only electrons Protons and neutrons Only protons Only neutrons None Hint 34. Which of the following is a branch of science? Medicine Architecture Physics Engineering None Hint 35. Microorganisms that cause diseases are called: Useful microbes Producers Pathogens Decomposers None Hint 36. Which element has atomic number 1? Helium Hydrogen Oxygen Nitrogen None Hint 37. An ion is formed due to: Loss of neutrons Nuclear reaction Loss or gain of electrons Gain of protons None Hint 38. Bohr’s model explains: Atomic structure Radioactivity Chemical reactions Nuclear fission None Hint 39. Overuse of technology may lead to: Biodiversity growth Environmental pollution Resource conservation Peace None Hint 40. The force that pulls objects towards the Earth is: Magnetic force Gravitational force Muscular force Frictional force None Hint 41. Which form of energy is stored in food? Chemical energy Mechanical energy Heat energy Light energy None Hint 42. Which instrument is used to measure temperature? Barometer Thermometer Hygrometer Ammeter None Hint 43. Valence electrons are present in the: Outermost shell Innermost shell Nucleus Middle shell None Hint 44. Electrons revolve around the nucleus in: Fixed circular orbits Straight lines Square paths Random paths None Hint 45. Technology is best described as: Art Pure science Application of scientific knowledge Philosophy None Hint 46. Which shell is closest to the nucleus? M shell K shell N shell L shell None Hint 47. Science and technology are important because they: Improve quality of life Promote ignorance Increase superstition Reduce knowledge None Hint 48. Energy is defined as the ability to: Do work Eat food Produce sound Create matter None Hint 49. Which subatomic particle is responsible for electric current? Proton Nucleus Electron Neutron None Hint 50. Which part of the plant is mainly responsible for photosynthesis? Stem Leaf Flower Root None Hint Time's up Share: admin Previous post SSLC Social Science NIOS VIII February 4, 2026 Next post SSLC Science and Technology NIOS II February 5, 2026
