[ DOST 18 ] DOST SCHOLARSHIP EXAM REVIEWER XVIII

Armed Forces of the Philippines Service Aptitude Test Reviewer

DOST SCHOLARSHIP EXAM REVIEWER - General Science / Gen Info

Instructions:

Please answer each question to the best of your ability. Each question is multiple choice, and only one answer per question is correct. Select the most appropriate answer from the options provided. There are 20 questions in total.

When you have completed all questions, click the "Submit" button at the bottom of the page to see your score. Good luck!

1. Which of the following elements has the highest electronegativity?




2. What is the primary reason for water's high boiling point compared to other similar molecules?




3. In nuclear fission, the splitting of uranium-235 typically produces which pair of nuclei?




4. Which gas law relates the pressure and volume of a gas at constant temperature?




5. What is the molarity of a solution containing 58.5 grams of NaCl dissolved in 1 liter of water? (Na=23, Cl=35.5)




6. What is the name of the process where solid carbon dioxide changes directly to gas?




7. The pH of a solution changes from 3 to 6. By what factor does the hydrogen ion concentration change?




8. Which part of the brain controls involuntary actions like heartbeat and breathing?




9. What is the main function of ribosomes in a cell?




10. In physics, what is the SI unit of electric charge?




11. Which isotope is commonly used in radiocarbon dating?




12. What is the energy required to remove an electron from an atom in its gaseous state called?




13. In the periodic table, what property increases across a period from left to right?




14. Which principle explains why no two electrons in an atom can have the same set of quantum numbers?




15. What is the main constituent of natural gas?




16. In which layer of the Earth's atmosphere does most weather occur?




17. What is the bond angle in a water (H₂O) molecule?




18. What is the main component of bone tissue?




19. Which vitamin is also known as ascorbic acid?




20. What is the term for the amount of heat required to raise the temperature of 1 gram of a substance by 1°C?




21. What is the chemical name of table salt?




22. Which particle in an atom has no electric charge?




23. What is the SI unit of pressure?




24. In which organ does the process of photosynthesis primarily occur?




25. Which scientist is credited with discovering the electron?




26. What is the main gas responsible for the greenhouse effect on Earth?




27. What is the pH value of pure water at 25°C?




28. Which of the following is an example of a homogeneous mixture?




29. What is the chemical formula for ammonia?




30. Which organelle is known as the "powerhouse of the cell"?




Result

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