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