SSLC Science and Technology NIOS II Welcome to your SSLC Science and Technology NIOS II Total Questions: 50 Name Mobile No: 1. Metallic character generally: Decreases down a group Decreases across a period Remains constant Increases across a period None Hint 2. Which of the following is a metalloid? Silicon Chlorine Sodium Oxygen None Hint 3. Halogens belong to: Group 18 Group 17 Group 1 Group 16 None Hint 4. Atomic size decreases across a period because: Shells increase Nuclear charge increases Electrons decrease Mass decreases None Hint 5. Noble gases are placed in: Group 18 Group 14 Group 1 Group 17 None Hint 6. A vertical column in the periodic table is called a: Group Block Series Period None Hint 7. Non-metals usually form bonds by: Losing electrons Sharing or gaining electrons Losing protons Losing neutrons None Hint 8. Atoms combine to achieve: Lower energy and stability Higher mass Instability More neutrons None Hint 9. Ionic bond is formed by: Loss of neutrons Gain of protons Sharing of electrons Transfer of electrons None Hint 10. Covalent bond is formed by: Sharing of electrons Loss of protons Transfer of electrons Gain of neutrons None Hint 11. Chemical bonding helps atoms to: Achieve noble gas configuration Gain neutrons Lose mass Become unstable None Hint 12. Atomic number represents the number of: Neutrons Protons Nucleons Electrons only None Hint 13. Sodium chloride (NaCl) is an example of: Organic compound Metallic compound Ionic compound Covalent compound None Hint 14. Mendeleev arranged elements in order of increasing: Density Valency Atomic number Atomic mass None Hint 15. The outermost shell electrons are called: Free electrons Core electrons Valence electrons Inner electrons None Hint 16. Which bond is present in oxygen molecule (O₂)? Single covalent Triple covalent Double covalent Ionic None Hint 17. The modern periodic table is based on: Atomic number Valency Density Atomic mass None Hint 18. Hydrogen bond is a type of: Strong bond Metallic bond Weak intermolecular force Ionic bond None Hint 19. Transition elements are found in: p-block d-block s-block f-block None Hint 20. The reactivity of metals increases down the group because: Mass decreases Atomic size increases Atomic size decreases Nuclear charge decreases None Hint 21. The element with atomic number 11 belongs to: Group 2 Group 1 Group 18 Group 17 None Hint 22. Which of the following has ionic bonding? H₂O NaCl CH₄ CO₂ None Hint 23. Which group contains alkaline earth metals? Group 1 Group 17 Group 2 Group 16 None Hint 24. Elements in the same group have the same: Valence electrons Atomic mass Number of shells Density None Hint 25. The bond in methane (CH₄) is: Ionic Hydrogen Metallic Covalent None Hint 26. Elements with similar properties are placed in the same: Period Row Group Block None Hint 27. Which bond is present in nitrogen molecule (N₂)? Triple covalent Double covalent Single covalent Ionic None Hint 28. The force that holds atoms together in a molecule is: Gravitational force Chemical bond Friction Magnetic force None Hint 29. The most reactive non-metal is: Fluorine Chlorine Oxygen Nitrogen None Hint 30. A horizontal row in the periodic table is called a: Block Period Family Group None Hint 31. Metallic bonding is due to: Transfer of protons Transfer of neutrons Sharing of protons Sea of free electrons None Hint 32. Covalent compounds generally: Are metals Are hard solids Do not conduct electricity Conduct electricity None Hint 33. The valency of oxygen is: 3 4 2 1 None Hint 34. Who proposed the modern periodic law? Mendeleev Bohr Dalton Moseley None Hint 35. The smallest atom in the periodic table is: Fluorine Oxygen Hydrogen Helium None Hint 36. A molecule is formed when atoms are joined by: Chemical bond Heat Pressure Physical force None Hint 37. Ionic compounds generally have: Low boiling point Low melting point Soft structure High melting point None Hint 38. Elements in the same period have the same: Atomic mass Chemical properties Valency Number of shells None Hint 39. The bond formed between two non-metals is usually: Ionic Metallic Covalent Electrovalent None Hint 40. Chemical bond is formed due to: Repulsion between atoms Heat energy Attraction between atoms Nuclear reaction None Hint 41. Periodic classification helps in: Predicting properties of elements Creating atoms Increasing mass Destroying elements None Hint 42. The most reactive metals are found in: Group 1 Group 2 Group 18 Group 17 None Hint 43. Noble gases are chemically: Inert Very reactive Metallic Radioactive None Hint 44. Valency of Group 1 elements is: 0 2 1 3 None Hint 45. Ionic compounds conduct electricity in: Solid state only Gas state Dry state Molten or aqueous state None Hint 46. Non-metallic character generally: Decreases across a period Decreases down a group Increases across a period Remains constant None Hint 47. Electrovalent bond is another name for: Metallic bond Hydrogen bond Ionic bond Covalent bond None Hint 48. Metals form bonds by: Gaining electrons Sharing electrons Losing electrons Losing neutrons None Hint 49. Water (H₂O) is formed by: Metallic bond Ionic bond Covalent bond Hydrogen bond only None Hint 50. Which compound has covalent bonding? NaCl KCl CaO CO₂ None Hint Time's up Share: admin Previous post SSLC Science and Technology NIOS I February 5, 2026 Next post SSLC Science and Technology NIOS III February 5, 2026
