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 18 Group 16 Group 17 Group 1 None Hint 2. Elements with similar properties are placed in the same: Block Row Group Period None Hint 3. The bond formed between two non-metals is usually: Electrovalent Ionic Metallic Covalent None Hint 4. Sodium chloride (NaCl) is an example of: Organic compound Covalent compound Ionic compound Metallic compound None Hint 5. Transition elements are found in: f-block s-block d-block p-block None Hint 6. Ionic bond is formed by: Transfer of electrons Loss of neutrons Sharing of electrons Gain of protons None Hint 7. Water (H₂O) is formed by: Ionic bond Covalent bond Metallic bond Hydrogen bond only None Hint 8. A horizontal row in the periodic table is called a: Family Group Block Period None Hint 9. Elements in the same group have the same: Density Atomic mass Number of shells Valence electrons None Hint 10. The most reactive non-metal is: Chlorine Nitrogen Fluorine Oxygen None Hint 11. The modern periodic table is based on: Atomic mass Density Valency Atomic number None Hint 12. Which bond is present in nitrogen molecule (N₂)? Triple covalent Double covalent Single covalent Ionic None Hint 13. Covalent compounds generally: Are metals Are hard solids Conduct electricity Do not conduct electricity None Hint 14. Metals form bonds by: Losing electrons Losing neutrons Sharing electrons Gaining electrons None Hint 15. Chemical bond is formed due to: Nuclear reaction Heat energy Attraction between atoms Repulsion between atoms None Hint 16. Elements in the same period have the same: Number of shells Atomic mass Chemical properties Valency None Hint 17. Covalent bond is formed by: Loss of protons Sharing of electrons Transfer of electrons Gain of neutrons None Hint 18. Ionic compounds generally have: Soft structure High melting point Low boiling point Low melting point None Hint 19. Which of the following is a metalloid? Chlorine Oxygen Sodium Silicon None Hint 20. The element with atomic number 11 belongs to: Group 17 Group 18 Group 1 Group 2 None Hint 21. Metallic character generally: Increases across a period Decreases across a period Decreases down a group Remains constant None Hint 22. Non-metallic character generally: Increases across a period Decreases across a period Remains constant Decreases down a group None Hint 23. Non-metals usually form bonds by: Losing protons Losing neutrons Losing electrons Sharing or gaining electrons None Hint 24. Hydrogen bond is a type of: Ionic bond Strong bond Weak intermolecular force Metallic bond None Hint 25. Atoms combine to achieve: Instability Higher mass Lower energy and stability More neutrons None Hint 26. A vertical column in the periodic table is called a: Group Block Period Series None Hint 27. The valency of oxygen is: 3 2 4 1 None Hint 28. Which compound has covalent bonding? CaO CO₂ NaCl KCl None Hint 29. Metallic bonding is due to: Sea of free electrons Transfer of neutrons Transfer of protons Sharing of protons None Hint 30. Chemical bonding helps atoms to: Become unstable Achieve noble gas configuration Lose mass Gain neutrons None Hint 31. Noble gases are chemically: Radioactive Metallic Very reactive Inert None Hint 32. Atomic number represents the number of: Protons Nucleons Electrons only Neutrons None Hint 33. The force that holds atoms together in a molecule is: Chemical bond Magnetic force Gravitational force Friction None Hint 34. Atomic size decreases across a period because: Electrons decrease Shells increase Mass decreases Nuclear charge increases None Hint 35. Mendeleev arranged elements in order of increasing: Density Valency Atomic number Atomic mass None Hint 36. The bond in methane (CH₄) is: Metallic Ionic Covalent Hydrogen None Hint 37. The outermost shell electrons are called: Inner electrons Core electrons Free electrons Valence electrons None Hint 38. Electrovalent bond is another name for: Hydrogen bond Ionic bond Covalent bond Metallic bond None Hint 39. Periodic classification helps in: Creating atoms Destroying elements Predicting properties of elements Increasing mass None Hint 40. A molecule is formed when atoms are joined by: Physical force Heat Pressure Chemical bond None Hint 41. Valency of Group 1 elements is: 1 2 0 3 None Hint 42. Noble gases are placed in: Group 18 Group 1 Group 17 Group 14 None Hint 43. Who proposed the modern periodic law? Bohr Mendeleev Dalton Moseley None Hint 44. Ionic compounds conduct electricity in: Gas state Solid state only Dry state Molten or aqueous state None Hint 45. The most reactive metals are found in: Group 17 Group 1 Group 18 Group 2 None Hint 46. The smallest atom in the periodic table is: Oxygen Hydrogen Fluorine Helium None Hint 47. The reactivity of metals increases down the group because: Atomic size increases Nuclear charge decreases Atomic size decreases Mass decreases None Hint 48. Which group contains alkaline earth metals? Group 16 Group 17 Group 2 Group 1 None Hint 49. Which bond is present in oxygen molecule (O₂)? Double covalent Ionic Single covalent Triple covalent None Hint 50. Which of the following has ionic bonding? H₂O NaCl CO₂ CH₄ 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
