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