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