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