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