General Education Science PDF

GENERAL EDUCATION SCIENCE 1. Which of the following statements best Answer: A describes a hypothetical element with an electron 4. Which of the follo...

GENERAL EDUCATION SCIENCE 1. Which of the following statements best Answer: A describes a hypothetical element with an electron 4. Which of the following examples best illustrates configuration of 1s22s22p63s23p5? application of Boyle’s Law? a. The hypothetical element has an atomic a. A tire becomes harder as more air is pumped number of 11 into it. b. The hypothetical element is a member of Group b. A sealed aerosol can explodes when thrown V, otherwise called the Nitrogen Group. into a fire. c. The hypothetical element is in the fifth position c. A balloon expands and bursts when exposed to in the p-block, along the third period of the direct sunlight. periodic table. d. A scuba divers stops at certain depths as he d. The hypothetical element is located at the third ascends to the ocean’s surface. position of the p-block, along the fifth period of the periodic table. Answer: D Answer: C 5. Three liquids A, B, C were studied in a laboratory. Liquid A was found to float over B and 2. Despite the observed diversity among C. It was also found that liquid A flows fastest organisms, they are all made from the same set of among the three. What can be said about liquid A? biomolecules composed of monomeric units except: a. Densest and most vicious a. Proteins b. Densest and least viscous b. Carbohydrates c. Least dense and most vicious c. Nucleic Acids d. Least dense and least viscous d. Lipids and Fats Answer: D Answer: D 6. Which of the following statements represents a physical change? 3. What will be formed when radium isotope, with 88 protons and 138 neutrons undergoes alpha a. An antacid tablet forms bubbles when dissolved decay? in water. a. Radon Atom (Rn222) with 86 Protons b. A flashlight beam slowly gets dimmer and finally dies out over time. b. Francium Atom (Fr222) with 87 Protons c. The lawn grows thicker every day because c. Actinium Atom (Ac222) with 89 Protons fertilizers were added into the soil. d. Thorium Atom (Th232) with 90 Protons d. Frozen mango juice melted when left standing d. Few organisms can directly utilize atmospheric at room temperature for 30 minutes. nitrogen Answer: D Answer: D 7. Which of the following best explains why farmers burn rice straw and hull during seasons of 10. Which of the following sentences about the harvest? greenhouse effect is INCORRECT? a. Burning rice hulls and straws produce a. Greenhouse gases trap heat in the atmosphere compounds that act as a repellant for pests which which are returned to the earth’s surface. may damage plantation. b. Greenhouse effect is important in maintaining b. The smoke produced by burning rice hulls and the temperature of the earth. straws stimulates growth and fruit-bearing of trees. c. Greenhouse effect is due to gases that absorb the green region of light from the sun. c. Rice hulls and straws are burned so that more spaces will be available for planting the next set of d. Greenhouse effect increases the overall surface crops. temperature of the earth. d. Ash from burnt rice hulls and straws are rich in Answer: C compounds that could neutralize acidic soil so that more crops will grow 11. When a gardener propagates a plant by taking Answer: D cuttings, he plants his cutting in a well-watered soil in a plant pot. What is the most likely reason why he may then cover the plant and pot with a 8. Acid rain occurs when _________. lightly perforated polythene bag? a. carbon dioxide combines with water in the a. To reduce the water demand of the cutting. atmosphere. b. To decrease the rate of gaseous exchange by b. phosphorus-rich water in lakes evaporates to the plant. form phosphoric acid. c. To reduce the chance of attack by pests. c. sulfur released in burning fossil fuels combines with water in the atmosphere. d. To protect the plant from cold weather. d. excess hydrogen is released into the Answer: A atmosphere to produce acids. Answer: C 12. It is a common observation that mushrooms thrive few days after lightning strikes. Which among the following biogeochemical cycles is 9. Why is it difficult to integrate nitrogen gas from involved in this process? the atmosphere into the nitrogen cycle of the biosphere? a. Nitrogen cycle a. Nitrogen is very abundant in the atmosphere b. Carbon-Oxygen cycle b. Living organisms quickly absorb nitrogen gas c. Phosphorus cycle c. Oceans quickly absorb nitrogen gas d. Sulfur cycle Answer: A 16. PAGASA announces the approach of the seasonal winds. The familiar names used are Amihan and Habagat, internationally known as 13. Which of the following factors contribute to an ________ and ________ respectively. increase in human population? a. Northeast and southwest I. Immigration II. Emigration b. Trade wind and easterlies III. Natality IV. Mortality c. Southwest and northeast a. III and IV d. Westerlies and easterlies b. II and III Answer: A c. I only d. I and III 17. Fog is a cloud with its base at or very near the Answer: D ground. The formation of fog generally occurs after the ground has lost heat by: a. Evaporation 14. Shown below is a simple food web in a grassy community. The arrow symbol means eaten by. b. Convection What would happen if all snakes are killed? c. Conduction Grass>Grasshopper>Frog>Snake d. Radiation Bird>Snake Answer: D a. Grass population would increase. b. Grasshopper population would increase. 18. Why do we see the sunrise in the east? c. Bird and frog populations would increase. a. The earth revolves eastward. d. Grasshopper and bird populations would b. The earth rotates from west to east. increase. c. We are located in the 20th meridian. Answer: C d. On the globe, we are located in the east. Answer: B 15. Which of the following shows mechanical weathering of rocks? a. formation of caverns 19. If a voltage of 100 volts produces a current of 5 amperes in an electrical device, what is the b. acids dissolves rocks resistance? c. freezing water between rock particles a. 95 Ohms d. iron in rocks combine with oxygen b. 20 Ohms Answer: C c. 105 Ohms d. 500 Ohms Answer: B 23. A stainless steel spoon feels colder than a plastic spoon because of stainless steel a. absorbs less heat from the hand than plastic 20. Which of the following best differentiates an does earthquake's intensity from its magnitude? b. is really colder than plastic a. Intensity describes 'the depth from which the earthquake originated’ while magnitude refers to c. has a lower temperature than plastic ‘the energy of the earthquake’. d. conducts heat away from the hand faster than b. Intensity cannot be measured while magnitude plastic does can be measured using a seismograph. Answer: D c. Intensity refers to the strength of the quake while magnitude refers to the degree of destruction it caused at the epicenter. 24. Why is it NOT advisable to repeatedly open the door of a refrigerator? d. Intensity is a measure of how much damage an earthquake cause at the surface while the a. It will loosen the hinges of the refrigerator's magnitude is the strength of the quake. door Answer: D b. Leads to wastage in electrical energy. c. Repeated opening introduces bacteria in to the refrigerator. 21. Comparing the speed of sound in liquids, gases, and solids, the speed of sound is usually d. The warm air outside lowers the temperature lowest in ____ and highest in ____. inside thus making the refrigeration less-efficient. a. solids, gases Answer: B b. gases, liquids c. liquids, solids 25. What kind of mirror is used in cars to give the driver a wider area and smaller image of the traffic d. gases, solids behind him/her? Answer: D a. Double concave b. Convex 22. Which has a greater density, a lake full of c. Plane water or a cupful of water? d. Concave a. The cup is full of water Answer: B b. The lake full of water c. Not enough information 26. Why do we hear thunder some seconds after d. They have the same density seeing lightning? Answer: D a. Light appears brighter in the sky. b. Light travels faster than sound. c. Sound travels 1.331 m/s d. Sound is released later actually c. Geotropism Answer: B d. Phototropism Answer: B 27. Water has a higher specific heat than iron. What does this mean? a. Water is hotter than iron b. Water heats more rapidly than iron c. Water is denser than iron d. Water heats more slowly than iron Answer: D 28. If a colorblind man marries a woman who has normal vision and no history of the disease, it is most probable that all of their : a. daughters will be carriers b. daughters will be colorblind c. sons will be carriers d. sons will be colorblind Answer: A 29. Albino corn seedlings may grow several inches tall. However, they will eventually die, primarily because a. direct sunlight will destroy their cells b. they lack adequate root system c. they cannot produce their own food d. they cannot obtain carbon dioxide Answer: C 30. Mimosa pudica, locally known as Makahiya is called as such because its leaflets tend to close when touched. This organismal response to a given stimuli is called: a. Hydrotropism b. Thigmotropism