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