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Changes in the composition of the light of a supernova

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Changes in the composition of the light of a supernova  [#permalink]

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New post Updated on: 07 Apr 2019, 06:22
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  25% (medium)

Question Stats:

85% (01:07) correct 15% (00:45) wrong based on 13 sessions

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Changes in the composition of the light of a supernova —an exploding star— reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas.

(A) reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas

(B) reveals not only what chemical elements are in the explosion but also the speed at which the outer layers of stellar gas are expanding

(C) not only reveal the chemical elements in the explosion but also the speed of the expanding outer layers of stellar gas

(D) not only reveal what chemical elements are in the explosion but also the speed of the outer layers of stellar gas when they are expanding

(E) reveal not only the chemical elements in the explosion but also the speed at which the outer layers of stellar gas are expanding

Originally posted by saurabh9gupta on 07 Apr 2019, 04:33.
Last edited by generis on 07 Apr 2019, 06:22, edited 1 time in total.
Edited the question and renamed the topiic.
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Re: Changes in the composition of the light of a supernova  [#permalink]

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New post 07 Apr 2019, 05:04
Changes in the composition of the light of a supernova--an exploding star--reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas.

(A) reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas —> “changes” is plural, so “reveals” is wrong

(B) reveals not only what chemical elements are in the explosion but also the speed at which the outer layers of stellar gas are expanding —> same as A

(C) not only reveal the chemical elements in the explosion but also the speed of the expanding outer layers of stellar gas —> wrong: not only “reveal” ... but also “the speed”

(D) not only reveal what chemical elements are in the explosion but also the speed of the outer layers of stellar gas when they are expanding—> wrong: not only “reveal” ... but also “the speed”

(E) reveal not only the chemical elements in the explosion but also the speed at which the outer layers of stellar gas are expanding—> correct: not only “the elements” ... but also “the speed”

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Changes in the composition of the light of a supernova  [#permalink]

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New post 07 Apr 2019, 06:53
saurabh9gupta wrote:
Changes in the composition of the light of a supernova —an exploding star— reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas.

(A) reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas

(B) reveals not only what chemical elements are in the explosion but also the speed at which the outer layers of stellar gas are expanding

(C) not only reveal the chemical elements in the explosion but also the speed of the expanding outer layers of stellar gas

(D) not only reveal what chemical elements are in the explosion but also the speed of the outer layers of stellar gas when they are expanding

(E) reveal not only the chemical elements in the explosion but also the speed at which the outer layers of stellar gas are expanding


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Changes in the composition of the light of a supernova   [#permalink] 07 Apr 2019, 06:53
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