Of the thousands of specimens of meteorites found on Earth and known

Para 1 Summary – Meteorites specimen in earth discussed and of them achondrites are around 100 in numbers and why they are called so. However achondrites are samples of volcanic rocks that originated outside Earth-Moon system.

Para 2 Summary – Scientists are confused because of Shergottites since they crystallized recently compared to typical achondrites and ejected in space when object chemically similar to Earth. Also, normally, meteorites derive from small bodes typically but shergottites come from large planets. Here again the conundrum continues since escaping large planets’ gravitational pull require an impact of that scale – fact that lunar meteorites have not been discovered added to dilemma.

Para 3 Summary – Speculation of scientists does not hold true due to chemical properties of Jupiter’s moon, lo and shergottites differ not to mention that Jupiter’s pull would have made escape difficult.

Para 4 Summary – Finally, author talks Mars which seems to be the logical source of shergottites. Mars has a volcanic surface which adds to the theory but absence of lunar meteorite on earth negates it since moon is closer to earth. A recent study suggests that the permafrost ice on mars surface might have vaporized due to impact and thus expanding gases might have helped ejecting the fragments of any impact.

1. The passage implies which of the following about shergottites?
Marked C the wrong answer. Para 1 support the act mentioned in point I here. And II goes of scope while III goes in opposite direction of what passage mentioned.
I. They are products of volcanic activity.
II. They derive from a planet larger than Earth.
III. They come from a planetary body with a chemical composition similar to that of lo.

(A) I only – CORRECT.
(B) II only
(C) I and II only – WRONG.
(D) II and III only
(E) I, II, and III

2. According to the passage. a meteorite discovered on Earth is unlikely to have come from a large planet for which of the following reasons?

(A) There are fewer large planets in the solar system than there are asteroids. WRONG. Irrelevant.
(B) Most large planets have been volcanically inactive for more than a billion years. – WRONG. Out of scope.
(C) The gravitational pull of a large planet would probably prohibit fragments from escaping its orbit. – CORRECT. Para 2 supports the fact.
(D) There are no chondrites occurring naturally on Earth and probably none on other large planets. – WRONG. Other large planets is out of scope.
(E) Interbody impact is much rarer on large than on small planets because of the density of the atmosphere on large planets. – WRONG. Comparison is out of scope.

3. The passage suggests that the age of shergottites is probably

(A) still entirely undetermined
(B) less than that of most other achondrites. – CORRECT. Para 2 lne “some 3.5 billion years later than typical achondrites” support this.
(C) about 3.5 billion years
(D) the same as that of typical achondrites
(E) greater than that of the Earth

4. According to the passage, the presence of chondrules in a meteorite indicates that the meteorite
Marked E after POE. Left with C and E eliminated C with an understanding that it can’t be proven.
(A) has probably come from Mars – WRONG.
(B) is older than the solar system itself – WRONG. Irrelevant.
(C) has not been melted since the solar system formed – CORRECT.
(D) is certainly less than 4 billion years old – WRONG. Irrelevant.
(E) is a small fragment of an asteroid – WRONG.

5. The passage provides information to answer which of the following questions?

(A) What is the precise age of the solar system? – WRONG. Not discussed.
(B) How did shergottites get their name? – WRONG. Not discussed.
(C) What are the chemical properties shared by shergottites and Martian soils? – WRONG. Only reference given nothing about details provided in para 4.
(D) How volcanically active is the planet Jupiter? – WRONG. Not discussed.
(E) What is a major feature of the Martian surface? – CORRECT. Para 4 is all about Mars.

6. It can be inferred from the passage that each of the following is a consideration in determining whether a particular planet is a possible source of shergottites that have been discovered on Earth EXCEPT the
Marked B which is wrong. Between B and D chose B since passage mentions Achondrites samples of volcanic rocks originate outside the Earth-Moon system (as per para 1).
(A) planet's size – WRONG. Given in passage.
(B) planet's distance from Earth
(C) strength of the planet's field of gravity – WRONG. Given in passage.
(D) proximity of the planet to its moons
(E) chemical composition of the planet's surface – WRONG. Given in passage.

7. It can be inferred from the passage that most meteorites found on Earth contain which of the following?
Marked A thinking that its crystals of Mars’s permafrost ice. As per para 4 chemical similarity between Martian soil and the Shergottites is high so a wrong inference on my part.
(A) Crystals – WRONG.
(B) Chondrules – CORRECT.
(C) Metals – WRONG.
(D) Sodium – WRONG.
(E) Sulfur – WRONG.

4 wrong answers.

Dear Skywalker18

Could you please confirm why option E in question number 4 is incorrect?

Does it because In Passage it is mentioned as meteorites and in answer it is mentioned as asteriod?

4. According to the passage, the presence of chondrules in a meteorite indicates that the meteorite

(A) has probably come from Mars
(B) is older than the solar system itself
(C) has not been melted since the solar system formed
(D) is certainly less than 4 billion years old
(E) is a small fragment of an asteroid

Can anyone explain why the answer is C for the above question? I could not find any evidence in the passage to justify the answer.

Read the first paragraph of the passage:

These igneous meteorites are known as achondrites because they lack chondrules— small stony spherules found in the thousands of meteorites (called "chondrites") composed primarily of unaltered minerals that condensed from dust and gas at the origin of the solar system.

Answer: C

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