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