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