SSLC Science and Technology NIOS VIII Welcome to your SSLC Science and Technology NIOS VIII Total Questions: 50 Name Mobile No: 1. The hidden trait is called: Recessive Gene Dominant Allele None Hint 2. Freezing point of water is: 10°C –5°C 5°C 0°C None Hint 3. Father of Genetics is: Watson Lamarck Mendel Darwin None Hint 4. Main cause of air pollution is: Vehicles and industries Trees Soil Rivers None Hint 5. Water cycle includes: Condensation All of these Precipitation Evaporation None Hint 6. The trait which appears in F1 generation is: Recessive Dominant Mutant Hidden None Hint 7. Soft water is good for: Cooking only Irrigation only Drinking only Washing and cleaning None Hint 8. Main source of water pollution: Trees Wind Sewage and industrial waste Sunlight None Hint 9. Water covers about ____ of Earth surface: 10% 50% 71% 30% None Hint 10. When both alleles are same it is called: Heterozygous Hybrid Homozygous Mutation None Hint 11. Sudden heritable change is: Adaptation Variation Mutation Selection None Hint 12. Mendel’s law explains: Inheritance of traits Light Energy Motion None Hint 13. Fresh water is mainly found in: Oceans Rivers and lakes Atmosphere Seas None Hint 14. DNA stands for: Double Nitric Acid None Deoxyribonucleic Acid Dinucleic Acid None Hint 15. Chromosomes are made of: Fat RNA only Protein only DNA and protein None Hint 16. XY chromosome represents: Both Male None Female None Hint 17. Safe drinking water should be: Clear and germ free Coloured Salty Dirty None Hint 18. Genetic makeup of organism is: Trait Genotype Phenotype Mutation None Hint 19. Gas required for respiration is: Oxygen Nitrogen Carbon dioxide Helium None Hint 20. Number of chromosomes in human gamete is: 23 44 22 46 None Hint 21. Boiling point of water is: 100°C 50°C 120°C 75°C None Hint 22. Process of vapour turning into water is: Evaporation Melting Condensation Sublimation None Hint 23. Ozone layer protects us from: Heat Rain UV rays Dust None Hint 24. Excess nutrients in water causes: Evaporation Condensation Pollution Eutrophication None Hint 25. The major component of air is: Hydrogen Nitrogen Carbon dioxide Oxygen None Hint 26. The genetic material is: Fat Protein Sugar DNA None Hint 27. Hard water contains: Oxygen Calcium and magnesium salts Carbon dioxide Nitrogen None Hint 28. Heredity is the transmission of: Energy Traits from parents to offspring Diseases Food None Hint 29. Method to purify water at home: Mixing soil Heating slightly Boiling Freezing None Hint 30. Study of heredity and variation is called: Biology Genetics Chemistry Physics None Hint 31. Air is a mixture of: Liquids Metals Solids Gases None Hint 32. Alternative forms of a gene are called: Genes Alleles Cells Traits None Hint 33. Genes are located on: Cytoplasm Ribosomes Chromosomes Mitochondria None Hint 34. Plants use carbon dioxide for: Respiration Digestion Photosynthesis Excretion None Hint 35. The basic unit of heredity is: Tissue Cell Organ Gene None Hint 36. Law of segregation was given by: Mendel Darwin Lamarck Newton None Hint 37. A change in gene is called: Selection Mutation Evolution Variation None Hint 38. Conservation of water means: Wasting water Saving water Heating water Polluting water None Hint 39. Acid rain is caused by: Oxygen Carbon Hydrogen Nitrogen and sulphur oxides None Hint 40. Percentage of oxygen in air is about: 50% 21% 78% 1% None Hint 41. Passing of characters from parents to offspring is: Selection Mutation Heredity Evolution None Hint 42. Air contains water vapour which causes: Light Heat Wind Rain None Hint 43. Process of water turning into vapour is: Freezing Evaporation Condensation Melting None Hint 44. Mendel experimented on: Wheat Maize Pea plant Rice None Hint 45. When alleles are different it is called: Heterozygous Clone Homozygous Pure None Hint 46. Number of chromosomes in human body cell is: 23 48 44 46 None Hint 47. Gas responsible for global warming is: Carbon dioxide Oxygen Nitrogen Helium None Hint 48. Physical expression of gene is: Mutation Allele Genotype Phenotype None Hint 49. Freezing point of water is: 0°C 10°C 5°C –5°C None Hint 50. XX chromosome represents: Both Male Female None None Hint Time's up Share: admin Previous post SSLC Science and Technology NIOS VII February 12, 2026 Next post SSLC Science and Technology NIOS IX February 12, 2026
