I. Choose the correct answer. Explain your answer.

1. In preparing kalamansi juice, why can the seeds be removed easily after adding two or three teaspoons of sugar to the solution and stirring it?
a. The added water increases the volume of the juice, bringing the seeds closer to the mouth of the glass.
b. The sugar makes the solution sweeter.
c. The sugar increases the density of the solution, making the seeds float.
d. Stirring makes the solution thinner, or less concentrated.

2. To safely empty the gasoline tank of a car, which of the following should we NOT do?
a. Fill a plastic tube with gasoline.
b. Sip the gasoline in the tube until the fuel reaches your mouth.
c. Dip one end of the tube into the fuel tank of the car.
d. Put the other end of the tube into an empty container that is placed lower than the car tank.

3. In cooking rice in rural areas, the firewood is arranged loosely under the pot. Why?
a. This is really the practice in rural communities.
b. The loose arrangement makes the firewood produce less ashes.
c. The loose arrangement of the firewood cooks faster and gives the rice a nice odor.
d. The loose arrangement of the firewood allows air to reach the burning firewood faster.

4. In setting up a water tank, why must we put it higher than our house?
a. All building contractors follow this practice.
b. Gravity will make the water from the tank flow down the pipes to our house.
c. The tank will hold more water at a higher position.
d. The water stored in the tank will be used up more slowly.

5. Yeast is added to bread dough. What is the role of yeast in baking bread?
a. Yeast produces a gas that makes the dough rise.
b. Yeast has nutritive value.
c. Yeast imparts a nice flavor to the bread.
d. Yeast is also used in DNA technology. ​