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