CSAT 2021 Practice Questions

Will be posting some csat questions for practice here on a daily basis!

Neyawn , CaptainVyom and 12 others like this
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25. In a certain code '13' means 'stop smoking' and '59' means 'injurious habit'. What is the meaning of '9' and '5' respectively in that code?


1.'157' means 'stop bad habit'.


2.'839'means 'smoking is injurious'.


(A)  if the data in statement I alone are sufficient to answer the question


(B)  if the data in statement II alone are sufficient answer the question


(C)  if the data either in I or II alone are sufficient to answer the question


(D)  if the data even in both the statements together are not sufficient to answer the question;



C

25. C 

Correct. 

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Neyawn said

21. When the digits of two-digit numbers are reversed, the number increases by 27, the sum of such two-digit numbers


(a) 235


(b) 249


(c) 213


(d) 180

21. (B)



You use an Apple pencil?

Yes sir. Apple pencil in Notability app.

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26.  I ) 'A * B' means 'A is father of B'

( II ) 'A – B' means 'A is sister of B'

( III ) 'A + B' means 'A is mother of B'

( IV ) 'A/B' means 'A is sister of B'

In the expression D + F * O / P, how is O related to D?

A. Grand daughter

B. Son

C. Grand son

D. Daughter

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27. If in a certain language, MADRAS is coded as NBESBT, how is BOMBAY coded in that code?

A. CPNCBX

B. CPNCBZ

C. CPOCBZ

D. CQOCBZ

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28. If PAINT is coded as 74128 and EXCEL IS CODED AS 93596 then how would you encode ACCEPT?

A. 455978

B. 547978

C. 554978

D. 735961

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26.  I ) 'A * B' means 'A is father of B'

( II ) 'A – B' means 'A is sister of B'

( III ) 'A + B' means 'A is mother of B'

( IV ) 'A/B' means 'A is sister of B'

In the expression D + F * O / P, how is O related to D?

A. Grand daughter

B. Son

C. Grand son

D. Daughter

A. GrandDaughter

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BGP said

26.  I ) 'A * B' means 'A is father of B'

( II ) 'A – B' means 'A is sister of B'

( III ) 'A + B' means 'A is mother of B'

( IV ) 'A/B' means 'A is sister of B'

In the expression D + F * O / P, how is O related to D?

A. Grand daughter

B. Son

C. Grand son

D. Daughter

A. GrandDaughter

Correct. 

D + F * O / P

D + F means D is mother of F

F * O means F is father of O

O /P means O is sister of P

705 views

Which app do you use?

Notability or good notes?

Which ipad model do you have ?

Tell me more!

Do you make all notes in ipad. Is it tiring?

Do you use apple pencil 2?

Nikita said

Is that a font ???

Did you do it on iPad? What font do you use? What one do you use??

You will beat Anudeep in handwriting!



21. When the digits of two-digit numbers are reversed, the number increases by 27, the sum of such two-digit numbers


(a) 235


(b) 249


(c) 213


(d) 180

21. (B)



Hahaha... thanks. I wrote it on ipad. Not a font.


555 views

Nikita said

Which app do you use?

Notability or good notes?

Which ipad model do you have ?

Tell me more!

Do you make all notes in ipad. Is it tiring?

Do you use apple pencil 2?

Nikita said

Is that a font ???

Did you do it on iPad? What font do you use? What one do you use??

You will beat Anudeep in handwriting!



21. When the digits of two-digit numbers are reversed, the number increases by 27, the sum of such two-digit numbers


(a) 235


(b) 249


(c) 213


(d) 180

21. (B)



Hahaha... thanks. I wrote it on ipad. Not a font.


Apple iPad 6th gen, pencil 1st gen, Notability app. I do make notes in it, but not all. Mostly I use it for annotating the pdf (like Economic survey etc), organizing notes, reading books and Newspaper, solving test papers, and for rough works.

Neyawn, CaptainVyom and 1 others like this
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29. During a particular period, water enters a partially filled reservoir at a constant rate through a mountain stream. At the same time, water is pumped out of the reservoir at a constant rate through an outlet pipe. At what rate, in gallons per minute, is the amount of water in the reservoir increasing?


(1) The amount of water initially in the reservoir is 1800 gallons.


(2) Water is pumped into the reservoir at a rate of 8 gallons per minute and out of the reservoir at a rate of 20 gallons every 3 minutes.


A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.


B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.


C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.


D) EACH statement ALONE is sufficient.

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30. SENTENCE CORRECTION (MARKED IN ITALICS)

Investigations along the Solo river in Indonesia have led some archeologists to debunk the idea of an era in which Homo Erectus had still survived in then Homo Sapiens’ inhabited areas.


A) in which Homo Erectus had still survived in then Homo Sapiens’ inhabited areas


B) in which Homo Erectus still survived in areas inhabited by Homo Sapiens


C) when Homo Erectus still survived where there were areas inhabited by Homo Sapiens


D) when Homo Erectus had still survived in current Homo Sapiens areas

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31. Recently, scientists determined that great white sharks can live over 70 years, much longer than had been previously thought. They made the discovery by examining the layers of different colors that accumulated on the shark’s teeth over the years. In the 1950s, atomic bomb testing produced unusually large amounts of carbon-14, which fell from the atmosphere into the ocean and accumulated as a distinctive layer on the shark’s teeth corresponding to a known period in time. Perplexingly, even though great white sharks live longer than had been expected, some parties maintain that based on the new findings, the great white sharks must be protected from overfishing.


Which of the following, if true, best resolves the discrepancy identified above?


A) Great white sharks need to be protected from overfishing because they are dying rapidly due to poisoning by carbon-14.


B) Great white sharks were determined to live longer than had been previously thought based on the discovery of a carbon-14-rich layer within older sharks’ teeth.


C) Great white sharks are evidently endangered and therefore need to be protected from overfishing.


D) Great white sharks’ longer lifespan implies that they mature more slowly and reproduce more slowly than had previously been assumed.


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29. During a particular period, water enters a partially filled reservoir at a constant rate through a mountain stream. At the same time, water is pumped out of the reservoir at a constant rate through an outlet pipe. At what rate, in gallons per minute, is the amount of water in the reservoir increasing?


(1) The amount of water initially in the reservoir is 1800 gallons.


(2) Water is pumped into the reservoir at a rate of 8 gallons per minute and out of the reservoir at a rate of 20 gallons every 3 minutes.


A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.


B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.


C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.


D) EACH statement ALONE is sufficient.

B

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30. SENTENCE CORRECTION (MARKED IN ITALICS)

Investigations along the Solo river in Indonesia have led some archeologists to debunk the idea of an era in which Homo Erectus had still survived in then Homo Sapiens’ inhabited areas.


A) in which Homo Erectus had still survived in then Homo Sapiens’ inhabited areas


B) in which Homo Erectus still survived in areas inhabited by Homo Sapiens


C) when Homo Erectus still survived where there were areas inhabited by Homo Sapiens


D) when Homo Erectus had still survived in current Homo Sapiens areas

A

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31. Recently, scientists determined that great white sharks can live over 70 years, much longer than had been previously thought. They made the discovery by examining the layers of different colors that accumulated on the shark’s teeth over the years. In the 1950s, atomic bomb testing produced unusually large amounts of carbon-14, which fell from the atmosphere into the ocean and accumulated as a distinctive layer on the shark’s teeth corresponding to a known period in time. Perplexingly, even though great white sharks live longer than had been expected, some parties maintain that based on the new findings, the great white sharks must be protected from overfishing.


Which of the following, if true, best resolves the discrepancy identified above?


A) Great white sharks need to be protected from overfishing because they are dying rapidly due to poisoning by carbon-14.


B) Great white sharks were determined to live longer than had been previously thought based on the discovery of a carbon-14-rich layer within older sharks’ teeth.


C) Great white sharks are evidently endangered and therefore need to be protected from overfishing.


D) Great white sharks’ longer lifespan implies that they mature more slowly and reproduce more slowly than had previously been assumed.


B

689 views

BGP said

31. Recently, scientists determined that great white sharks can live over 70 years, much longer than had been previously thought. They made the discovery by examining the layers of different colors that accumulated on the shark’s teeth over the years. In the 1950s, atomic bomb testing produced unusually large amounts of carbon-14, which fell from the atmosphere into the ocean and accumulated as a distinctive layer on the shark’s teeth corresponding to a known period in time. Perplexingly, even though great white sharks live longer than had been expected, some parties maintain that based on the new findings, the great white sharks must be protected from overfishing.


Which of the following, if true, best resolves the discrepancy identified above?


A) Great white sharks need to be protected from overfishing because they are dying rapidly due to poisoning by carbon-14.


B) Great white sharks were determined to live longer than had been previously thought based on the discovery of a carbon-14-rich layer within older sharks’ teeth.


C) Great white sharks are evidently endangered and therefore need to be protected from overfishing.


D) Great white sharks’ longer lifespan implies that they mature more slowly and reproduce more slowly than had previously been assumed.


B

D is right. It says that if sharks are older than we thought, there are fewer of them than we thought. That's a good reason to protect them from overfishing.

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BGP said

30. SENTENCE CORRECTION (MARKED IN ITALICS)

Investigations along the Solo river in Indonesia have led some archeologists to debunk the idea of an era in which Homo Erectus had still survived in then Homo Sapiens’ inhabited areas.


A) in which Homo Erectus had still survived in then Homo Sapiens’ inhabited areas


B) in which Homo Erectus still survived in areas inhabited by Homo Sapiens


C) when Homo Erectus still survived where there were areas inhabited by Homo Sapiens


D) when Homo Erectus had still survived in current Homo Sapiens areas

A

B is correct. 

Creating a filter: in this question, the construction "in which" may stand out. The answer choices show that "in which" and "when" are alternatives we must choose between. Both phrases, "in which" and "when," convey meaning accurately here. More of a problem is the phrase "in then Homo Sapiens' inhabited areas," which is an awkward string of words.

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