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