Ques:Q: What is the largest object in the solar system? Read this paragraph and choose the correct option from the provided answers: The Sun is just an average star compared to other stars. But it is by far the largest object in the solar system. The Sun is more than 500 times the mass of everything else in the solar system combined! Listed below is data on the sizes of the Sun and planets relative to Earth ( Table below ). Choices: - the orbit - the earth - jupiter - the sun A:

Ans:the sun
-----
Ques:Q: What is a soft, gray, nontoxic alkaline earth metal? Read this paragraph and choose the correct option from the provided answers: For a better understanding of alkaline Earth metals, let's take a closer look at two of them: calcium (Ca) and strontium (Sr). Calcium is a soft, gray, nontoxic alkaline Earth metal. Although pure calcium doesn't exist in nature, calcium compounds are very common in Earth's crust and in sea water. Calcium is also the most abundant metal in the human body, occurring as calcium compounds such as calcium phosphate and calcium carbonate. These calcium compounds are found in bones and make them hard and strong. The skeleton of the average adult contains about a kilogram of calcium. Because calciumlike bariumabsorbs x-rays, bones show up white in x-ray images. Calcium is an important component of a healthy human diet. Good food sources of calcium are pictured in Figure below . Choices: - pewter - magnesium - potassium - calcium A:

Ans:calcium
-----
Ques:Q: What term is used to describe structures that are similar in unrelated organisms? Read this paragraph and choose the correct option from the provided answers: Analogous structures are structures that are similar in unrelated organisms. The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor. For example, the wings of bats and birds, shown in Figure below , look similar on the outside. They also have the same function. However, wings evolved independently in the two groups of animals. This is apparent when you compare the pattern of bones inside the wings. Choices: - reproductive - symbolic - isolated - analogous A:

Ans:analogous
-----
Ques:Q: What play an important role in the modulation of the nuclear chain reaction? Read this paragraph and choose the correct option from the provided answers: The control rods play an important role in the modulation of the nuclear chain reaction (usually a collision of a neutron with uranium). Each collision produces more neutrons than were present initially. If left unsupervised, the reaction would soon get out of control. Rods are commonly made of boron or a number of metals and metal alloys. The purpose of the control rods is to absorb neutrons to regulate the rate of the chain reaction so that the water does not overheat and destroy the reactor. Choices: - radiation rods - control neutrons - particle rods - control rods A:

Ans:
control rods
-----