Science Assignment PDF

## Section D: Science ### 16. What does 3R stand for in environmental protection? A) Reuse, Reduce, Rehabilitation B) Recycle, Reuse, Reduce C) Reduce, Rehabilitation, Recycle D) Recycle, Removal, Reduce ### 16. Which of the following statements about intelligence is scientifically accurate?...

## Section D: Science ### 16. What does 3R stand for in environmental protection? A) Reuse, Reduce, Rehabilitation B) Recycle, Reuse, Reduce C) Reduce, Rehabilitation, Recycle D) Recycle, Removal, Reduce ### 16. Which of the following statements about intelligence is scientifically accurate? A) Only boys can excel in technical fields like engineering and computer science. B) Intelligence is distributed equally among all genders, with both girls and boys having equal potential. C) Girls are only good at subjects that involve memorization. D) Intelligence is influenced by the amount of physical exercise a person does. ### 18. If a ray of light hits a mirror at an angle of 30° to the normal, what is the angle of reflection? A) 15° B) 30° C) 45° D) 60° ### 19. Sound travels fastest in - A) solids B) liquids C) gases D) vacuum ### 20. White light consists of __ colors. A) six B) seven C) eight D) nine ### 16. Which one of the following indicators is not natural? A) Hibiscus B) Turmeric C) Litmus D) Phenolphthalein ### 17. Which color does Newton's color disc appear when it rotates fast? A) Black B) Green C) Blue D) White ### 18. Why is it essential to manage wastewater effectively? A) To reduce water pollution B) To increase the volume of wastewater C) To produce more sewage D) To reduce water supply ### 19. A runner completes a 400 m race in 50 seconds. What is the runner's speed? A) 8 m/s B) 6 m/s C) 10 m/s D) 12 m/s ### 20. Which of the following is an example of a physical change? A) Baking a cake B) Melting of ice C) Rusting of iron D) Burning paper.