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