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