[ DOST 6 ] DOST SCHOLARSHIP EXAM REVIEWER VI

DOST SCHOLARSHIP REVIEWER
DEPARTMENT OF SCIENCE AND TECHNOLOGY SCHOLARSHIP REVIEWER

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Instructions:
Answer the following questions carefully. After submission, the system will identify the item numbers you answered incorrectly. You can retake the test as many times as needed until you get all the answers correct.

Happy reviewing and good luck!

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1. If a car travels 60 km in 1 hour, how long will it take to travel 180 km at the same speed?

A) 2 hours B) 2.5 hours C) 3 hours D) 4 hours

2. A solution is made by mixing 30 mL of a 50% salt solution with 70 mL of a 20% salt solution. What is the percentage concentration of salt in the final mixture?

A) 25% B) 30% C) 35% D) 40%

3. A group of students was tasked to investigate the effect of different fertilizers on plant growth. They found that plants with Fertilizer A grew taller than those with Fertilizer B. What is the independent variable in this experiment?

A) The height of the plants B) The type of fertilizer C) The number of plants D) The duration of the experiment

4. A cylinder has a radius of 5 cm and a height of 10 cm. What is its volume?

A) 100π cm³ B) 250π cm³ C) 500π cm³ D) 1000π cm³

5. Which of the following elements is most likely to conduct electricity?

A) Iron B) Sulfur C) Phosphorus D) Oxygen

6. A patient is experiencing symptoms of high blood pressure. The doctor prescribes medication that helps lower blood pressure. What is the primary function of this medication?

A) Increase heart rate B) Dilate blood vessels C) Increase blood viscosity D) Lower cholesterol levels

7. If a solution has a pH of 3, what type of solution is it?

A) Neutral B) Basic C) Acidic D) Alkaline

8. In a certain experiment, a scientist increases the temperature of a gas. Which of the following will most likely happen?

A) The gas will contract B) The gas will expand C) The pressure will decrease D) The gas will turn into a liquid

9. A student wants to determine the speed of a car that travels 150 meters in 5 seconds. What is the speed of the car?

A) 25 m/s B) 30 m/s C) 35 m/s D) 40 m/s

10. Which of the following is an example of a renewable resource?

A) Coal B) Natural gas C) Solar energy D) Nuclear energy

11. If the sum of angles in a triangle is 180 degrees, and two angles are 45 degrees and 55 degrees, what is the third angle?

A) 70 degrees B) 80 degrees C) 90 degrees D) 100 degrees

12. A researcher is studying the impact of air pollution on human health. If they observe that people living in highly polluted areas experience more respiratory problems, what type of study is this?

A) Experimental study B) Case-control study C) Cohort study D) Cross-sectional study

13. Which gas is produced when an acid reacts with a carbonate?

A) Oxygen B) Hydrogen C) Carbon dioxide D) Nitrogen

14. If the mass of an object is 10 kg and it is accelerated at 2 m/s², what is the net force acting on the object?

A) 5 N B) 10 N C) 15 N D) 20 N

15. In a chemical reaction, what is the purpose of a catalyst?

A) Increase the temperature of the reaction B) Decrease the energy needed for the reaction to occur C) Increase the concentration of reactants D) Decrease the amount of products formed

16. A student measures the height of a plant every week. After four weeks, the plant has grown from 10 cm to 15 cm. What is the average growth rate per week?

A) 1 cm/week B) 1.25 cm/week C) 1.5 cm/week D) 2 cm/week

17. Which of the following best describes the term 'ecosystem'?

A) A community of organisms and their physical environment B) A group of similar organisms C) The study of living organisms D) A specific type of habitat

18. If a container holds 200 mL of a 10% salt solution, how many grams of salt are in the solution?

A) 10 g B) 15 g C) 20 g D) 25 g

19. A sample of water is at 25°C. If the temperature increases, which of the following will most likely occur?

A) The water will freeze B) The water will boil C) The water will remain liquid D) The water will become solid

20. Which of the following processes is an example of diffusion?

A) A drop of food coloring spreading in water B) Water moving through a plant's roots C) Sugar dissolving in tea D) Air moving through a room

21. If a rectangular garden is 12 meters long and 8 meters wide, what is its perimeter?

A) 20 meters B) 40 meters C) 50 meters D) 60 meters

22. A researcher observes that increasing temperatures result in decreased fish populations in a lake. What type of relationship is indicated?

A) Positive correlation B) Negative correlation C) No correlation D) Indeterminate correlation

23. Which of the following statements about energy is true?

A) Energy cannot be created or destroyed. B) Energy can only be created. C) Energy is a physical object. D) Energy is only found in living organisms.

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