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SPSC (Sikkim) Exam  >  SPSC (Sikkim) Tests  >  Sikkim PCS Prelims Paper-II Mock Test- 7 - SPSC (Sikkim) MCQ

Sikkim PCS Prelims Paper-II Mock Test- 7 - SPSC (Sikkim) MCQ


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30 Questions MCQ Test - Sikkim PCS Prelims Paper-II Mock Test- 7

Sikkim PCS Prelims Paper-II Mock Test- 7 for SPSC (Sikkim) 2024 is part of SPSC (Sikkim) preparation. The Sikkim PCS Prelims Paper-II Mock Test- 7 questions and answers have been prepared according to the SPSC (Sikkim) exam syllabus.The Sikkim PCS Prelims Paper-II Mock Test- 7 MCQs are made for SPSC (Sikkim) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Sikkim PCS Prelims Paper-II Mock Test- 7 below.
Solutions of Sikkim PCS Prelims Paper-II Mock Test- 7 questions in English are available as part of our course for SPSC (Sikkim) & Sikkim PCS Prelims Paper-II Mock Test- 7 solutions in Hindi for SPSC (Sikkim) course. Download more important topics, notes, lectures and mock test series for SPSC (Sikkim) Exam by signing up for free. Attempt Sikkim PCS Prelims Paper-II Mock Test- 7 | 100 questions in 120 minutes | Mock test for SPSC (Sikkim) preparation | Free important questions MCQ to study for SPSC (Sikkim) Exam | Download free PDF with solutions
Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 1
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P2 Read the following information carefully and answer the questions given below it.
Eight students A, B, C, D, E, F, G and H are planning to enjoy car racing. There are only two cars and following are the conditions.

  1. One car can accommodate maximum five and minimum four students.
  2. A will sit in the same car in which D is sitting but H is not in the same car.
  3. B and C cannot sit in the same car in which D is sitting.
  4. F will sit in the car of four people only along with A and E but certainly not with G.

If H and G are sitting in the same car, who are other two students sitting in the same car?

Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 1

There are two cars I and II.

A and D sit in the same car, means, in I car H cannot sit in the same car i.e., H will sit in car II B and C are not in the same car in which D is sitting i.e. B and C will sit in car II. G is also in other car, means car II. Now, we have Car I – ADEF Car II – BCGH B and C are in the same car in which G and H are there.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 2
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P2 Read the following information carefully and answer the questions given below it.
Eight students A, B, C, D, E, F, G and H are planning to enjoy car racing. There are only two cars and following are the conditions.

  1. One car can accommodate maximum five and minimum four students.
  2. A will sit in the same car in which D is sitting but H is not in the same car.
  3. B and C cannot sit in the same car in which D is sitting.
  4. F will sit in the car of four people only along with A and E but certainly not with G.

 If E and A are sitting in the same car, which of the following statements is true?

Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 2

There are two cars I and II. 

A and D sit in the same car, means, in I car H cannot sit in the same car i.e., H will sit in car II B and C are not in the same car in which D is sitting i.e. B and C will sit in car II. G is also in other car, means car II.

Now, we have

Car I – ADEF

Car II – BCGH

Clearly G is not sitting. 

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Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 3
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P2 Read the following information carefully and answer the questions given below it.
Eight students A, B, C, D, E, F, G and H are planning to enjoy car racing. There are only two cars and following are the conditions.

  1. One car can accommodate maximum five and minimum four students.
  2. A will sit in the same car in which D is sitting but H is not in the same car.
  3. B and C cannot sit in the same car in which D is sitting.
  4. F will sit in the car of four people only along with A and E but certainly not with G.

Which of the following statements is superfluous for the above sitting arrangements ?

Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 3

There are two cars I and II. A and D sit in the same car, means, in I car H cannot sit in the same car i.e., H will sit in car II B and C are not in the same car in which D is sitting i.e. B and C will sit in car II. G is also in other car, means car II.

Now, we have

Car I – ADEF

Car II – BCGH

Statement (i) is superfluous, it is not necessary. 

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 4
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A survey conducted in Britain confirmed that an abnormally high percentage of patients suffering from arthritis of the spine who had been treated with X rays contracted cancer. Another study revealed a high incidence of childhood cancer in cases where the mother had been given prenatal pelvic X rays. These studies have pointed to the need to re-examine the assumption that exposure to low-linear energy transfer presents only a minor risk. Recently, examination of the death certificates of former employees of a West Coast plant that produces plutonium for nuclear weapons revealed markedly higher rates for cancers of the pancreas, lung, bone marrow, and lymphatic system than would have been expected in a normal population. While the National Academy of Sciences committee attributes this difference to chemical or other environmental causes rather than radiation, other scientists maintain that any radiation exposure, no matter how small, leads to an increase in cancer risk. It is believed by some that a dose of one rem, if sustained over many generations, would lead to an increase of 1 percent in the number of serious genetic defects at birth, a possible increase of 1,000 disorders per million births.

According to the passage, some scientists believe that a dose of one rem of radiation continued over a period of generations would
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 4

In the passage it is clearly mentioned that a dose of one rem if sustained over many generations, would lead to an increase of 1 percent in the number of serious genetic defects at  birth.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 5
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A survey conducted in Britain confirmed that an abnormally high percentage of patients suffering from arthritis of the spine who had been treated with X rays contracted cancer. Another study revealed a high incidence of childhood cancer in cases where the mother had been given prenatal pelvic X rays. These studies have pointed to the need to re-examine the assumption that exposure to low-linear energy transfer presents only a minor risk. Recently, examination of the death certificates of former employees of a West Coast plant that produces plutonium for nuclear weapons revealed markedly higher rates for cancers of the pancreas, lung, bone marrow, and lymphatic system than would have been expected in a normal population. While the National Academy of Sciences committee attributes this difference to chemical or other environmental causes rather than radiation, other scientists maintain that any radiation exposure, no matter how small, leads to an increase in cancer risk. It is believed by some that a dose of one rem, if sustained over many generations, would lead to an increase of 1 percent in the number of serious genetic defects at birth, a possible increase of 1,000 disorders per million births.

The passage implies that each of the following statements about radiation has been disputed EXCEPT?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 5

In the passage it is mentioned that many small doses of radiation are as harmful as a large dose. So, it implies that human can’t tolerate any amount of radiation. 

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 6
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An Employer pays Rs. 15 for each day a worker works, and forfeits Rs. 5 for each day he is idle. At the end of 40 days, a worker gets Rs. 160. For how many days did the worker remain idle?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 6

Suppose the worker remained idle for x days.  Then, He worked for (40 – x) days.

=15 (40 – x) – 5x =160

600-15x-5x=160  

20x = 600 -160

20x =440  x = 22. 

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 7
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The ratio between the length and the breadth of a rectangular park is 4: 1. If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 10 minutes, then the length of the park (in sq. m) is:
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 7

Perimeter = Distance covered in 10 min.

= (15000/60)*10 =2500 m  

Let h = 4x and b = x  

Then, 2(4x + x) = 2500  x = 250.

Then length = 4 * 250 =1000.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 8
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An error 3% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 8

Let 100 cm is read as 103 cm.

Area 100*100=10000  

Error area 103*103=10609  

Diff=609.

%ge error= (609/10000)*100 =6.09%. 

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 9
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For some time, scientists have believed that cholesterol plays a major role in heart disease because people with familial hypercholesterolemia, a genetic defect, have six to eight times the normal level of cholesterol in their blood and they invariably develop heart disease. Scientists also noticed that people with familial hypercholesterolemia appear to produce more LDL’s (low-density lipoproteins) than normal individuals. However, scientists wondered, could a genetic mutation that causes a slowdown in the removal of LDL’s from the blood also result in an increase in the synthesis of this cholesterol-carrying protein? Since scientists could not experiment on human body tissue, their knowledge of familial hypercholesterolemia was severely limited. However, a breakthrough came in the laboratories of Yoshio Watanabe of Kobe University in Japan in 1980. Watanabe noticed that a male rabbit in his colony had ten times the normal concentration of cholesterol in its blood. By appropriate breeding, Watanabe obtained a strain of rabbits that had very high cholesterol levels. These rabbits spontaneously developed heart disease. To his surprise, Watanabe further found that the rabbits, like humans with familial hypercholesterolemia, lacked LDL receptors. What scientists learned by studying the Watanabe rabbits is that the removal of the VLDL (very low-density lipoproteins) remnant requires the LDL receptor. Normally, the majority of the VLDL remnants go to the liver where they bind to LDL receptors and are degraded. In the Watanabe rabbit, due to a lack of LDL receptors on liver cells, the VLDL remnants remain in the blood and are eventually converted to LDL’s. The LDL receptors thus have a dual effect in controlling LDL levels. They are necessary to prevent over synthesis of LDL’s from VLDL remnants and they are necessary for the normal removal of LDL’s from the blood.

Q. The passage supplies information to answer which of the following questions?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 9
From the sentence "Normally, the majority of the VLDL remnants go to the liver where they bind to LDL receptors and are degraded. ” passage supplies information about the answer of "Where in the body are VLDL remnants degraded.”.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 10
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For some time, scientists have believed that cholesterol plays a major role in heart disease because people with familial hypercholesterolemia, a genetic defect, have six to eight times the normal level of cholesterol in their blood and they invariably develop heart disease. Scientists also noticed that people with familial hypercholesterolemia appear to produce more LDL’s (low-density lipoproteins) than normal individuals. However, scientists wondered, could a genetic mutation that causes a slowdown in the removal of LDL’s from the blood also result in an increase in the synthesis of this cholesterol-carrying protein? Since scientists could not experiment on human body tissue, their knowledge of familial hypercholesterolemia was severely limited. However, a breakthrough came in the laboratories of Yoshio Watanabe of Kobe University in Japan in 1980. Watanabe noticed that a male rabbit in his colony had ten times the normal concentration of cholesterol in its blood. By appropriate breeding, Watanabe obtained a strain of rabbits that had very high cholesterol levels. These rabbits spontaneously developed heart disease. To his surprise, Watanabe further found that the rabbits, like humans with familial hypercholesterolemia, lacked LDL receptors. What scientists learned by studying the Watanabe rabbits is that the removal of the VLDL (very low-density lipoproteins) remnant requires the LDL receptor. Normally, the majority of the VLDL remnants go to the liver where they bind to LDL receptors and are degraded. In the Watanabe rabbit, due to a lack of LDL receptors on liver cells, the VLDL remnants remain in the blood and are eventually converted to LDL’s. The LDL receptors thus have a dual effect in controlling LDL levels. They are necessary to prevent over synthesis of LDL’s from VLDL remnants and they are necessary for the normal removal of LDL’s from the blood.

Q. According to the passage, by studying the Watanabe rabbits’ scientists learned that
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 10
In the passage it is mentioned that "What scientists learned by studying the Watanabe rabbits is that the removal of the VLDL (very low-density lipoproteins) remnant requires the LDL receptor. Normally, the majority of the VLDL remnants go to the liver where they bind to LDL receptors and are degraded.”

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 11
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For some time, scientists have believed that cholesterol plays a major role in heart disease because people with familial hypercholesterolemia, a genetic defect, have six to eight times the normal level of cholesterol in their blood and they invariably develop heart disease. Scientists also noticed that people with familial hypercholesterolemia appear to produce more LDL’s (low-density lipoproteins) than normal individuals. However, scientists wondered, could a genetic mutation that causes a slowdown in the removal of LDL’s from the blood also result in an increase in the synthesis of this cholesterol-carrying protein? Since scientists could not experiment on human body tissue, their knowledge of familial hypercholesterolemia was severely limited. However, a breakthrough came in the laboratories of Yoshio Watanabe of Kobe University in Japan in 1980. Watanabe noticed that a male rabbit in his colony had ten times the normal concentration of cholesterol in its blood. By appropriate breeding, Watanabe obtained a strain of rabbits that had very high cholesterol levels. These rabbits spontaneously developed heart disease. To his surprise, Watanabe further found that the rabbits, like humans with familial hypercholesterolemia, lacked LDL receptors. What scientists learned by studying the Watanabe rabbits is that the removal of the VLDL (very low-density lipoproteins) remnant requires the LDL receptor. Normally, the majority of the VLDL remnants go to the liver where they bind to LDL receptors and are degraded. In the Watanabe rabbit, due to a lack of LDL receptors on liver cells, the VLDL remnants remain in the blood and are eventually converted to LDL’s. The LDL receptors thus have a dual effect in controlling LDL levels. They are necessary to prevent over synthesis of LDL’s from VLDL remnants and they are necessary for the normal removal of LDL’s from the blood.

Q. The passage implies that Watanabe rabbits differ from normal rabbits in which of the following ways?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 11
In the passage it is mentioned that “Watanabe further found that the rabbits, like humans with familial hypercholesterolemia, lacked LDL receptors.” Implies Watanabe rabbit’s blood contains more VLDL remnants than does the blood of normal rabbits.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 12
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"I want to criticize the social system, and to show it at work, at its most intense." Virginia Woolf’s provocative statement about her intentions in writing Mrs. Dalloway has regularly been ignored by the critics, since it highlights an aspect of her literary interests very different from the traditional picture of the "poetic” novelist concerned with examining states of reverie and vision and with following the intricate pathways of individual consciousness. In her novels, Woolf is deeply engaged by the questions of how individuals are shaped (or

deformed) by their social environments, how historical forces impinge on people’s lives, how class, wealth, and gender help to determine people’s fates. Most of her novels are rooted in a realistically rendered social setting and in a precise historical time.Woolf’s focus on society has not been generally recognized because of her intense antipathy to propaganda in art. The pictures of reformers in her novels are usually satiric or sharply critical.Woolf detested what she called "preaching" in fiction, too, and criticized novelist D. H. Lawrence (among others) for working by this method. Woolf’s own social criticism is expressed in the language of observation rather than in direct commentary, since for her, fiction is a contemplative, not an active art. Woolf’s literary models were acute social observers like Chekhov and Chaucer. As she put it in The Common Reader, "It is safe to say that not a single law has been framed or one stone set upon another because of anything Chaucer said or wrote; and yet, as we read him, we are absorbing morality at every pore."

Q. It can be inferred from the passage that Woolf chose Chaucer as a literary model because she believed that
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 12
In the passage it is mentioned that “It is safe to say that not a single law has been framed or one stone set upon another because of anything Chaucer said or wrote; and yet, as we read him, we are absorbing morality at every pore. ” Implies that Woolf chose Chaucer as a literary model because she believed that Chaucer’s writing was greatly, if subtly, effective in influencing the moral attitudes of his readers.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 13
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"I want to criticize the social system, and to show it at work, at its most intense." Virginia Woolf’s provocative statement about her intentions in writing Mrs. Dalloway has regularly been ignored by the critics, since it highlights an aspect of her literary interests very different from the traditional picture of the "poetic” novelist concerned with examining states of reverie and vision and with following the intricate pathways of individual consciousness. In her novels, Woolf is deeply engaged by the questions of how individuals are shaped (or

deformed) by their social environments, how historical forces impinge on people’s lives, how class, wealth, and gender help to determine people’s fates. Most of her novels are rooted in a realistically rendered social setting and in a precise historical time.Woolf’s focus on society has not been generally recognized because of her intense antipathy to propaganda in art. The pictures of reformers in her novels are usually satiric or sharply critical.Woolf detested what she called "preaching" in fiction, too, and criticized novelist D. H. Lawrence (among others) for working by this method. Woolf’s own social criticism is expressed in the language of observation rather than in direct commentary, since for her, fiction is a contemplative, not an active art. Woolf’s literary models were acute social observers like Chekhov and Chaucer. As she put it in The Common Reader, "It is safe to say that not a single law has been framed or one stone set upon another because of anything Chaucer said or wrote; and yet, as we read him, we are absorbing morality at every pore."

Q. It can be inferred from the passage that the most probable reason Woolf realistically described the social setting in the majority of her novels was that she
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 13
In the passage it is mentioned that “Woolf is deeply engaged by the questions of how individuals are shaped (or deformed) by their social environments, how historical forces impinge on people’s lives, how class, wealth, and gender help to determine people’s fates. Most of her novels are rooted in a realistically rendered social setting and in a precise historical time.” Implies that she was interested in the effect of a person’s social milieu on his or her character and actions.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 14
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Direction: In a world cup tournament 16 teams participated. These 16 teams are seeded from 1 to 16 with seed 1 being the top seed and seed 16 being the bottom seed. The tournament is conducted in different stages. In stage 1 seed 1 played with seed 16 and that match is named as match 1 of stage 1, seed 2 played with seed 15 and that match is named as match 2 of stage 1, and so on. In stage 2, winner of match 1 and match 8 of stage 1 played against each other and that match is named as Match 1 of stage 2, then winner of match 2 and match 7 of stage 1 played against each other and that match is named as Match 2 of stage 2. And so on The same procedure is followed in further stages. Now answer the following questions.

Q. How many stages are in the tournament?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 14

Since 16 = 24 hence we will have total 5th stages in the tournament with last 5th stage is the final match

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 15
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Direction: In a world cup tournament 16 teams participated. These 16 teams are seeded from 1 to 16 with seed 1 being the top seed and seed 16 being the bottom seed. The tournament is conducted in different stages. In stage 1 seed 1 played with seed 16 and that match is named as match 1 of stage 1, seed 2 played with seed 15 and that match is named as match 2 of stage 1, and so on. In stage 2, winner of match 1 and match 8 of stage 1 played against each other and that match is named as Match 1 of stage 2, then winner of match 2 and match 7 of stage 1 played against each other and that match is named as Match 2 of stage 2. And so on The same procedure is followed in further stages. Now answer the following questions.

Q. What is the total number of matches in the tournament?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 15
Total number of matches is 8 + 4 +2 + 1 = 15

Or else since total number of teams is 16 hence number of matches must be 16 - 1 = 15

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 16
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Statement: Most of those who study in premier medical colleges in India migrate to Russia for better prospects in their professional pursuits.

Courses of Action:

All the students joining these colleges should be asked to sign a bond at the time of admission to the effect that they will remain in India at least for ten years after they complete education.

All those students who desire to settle in Russia should be asked to pay entire cost of their education which the government subsidies.
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 16
Clearly, no student can be bound to live and work in the country against his wish. So, 1 does not follow. However, it is quite right to recover the extra benefits awarded to students if they do not serve their own country. So, 2 follows.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 17
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Directions: Study the following information carefully and answer the questions that follow.

Manish and Shubham are good in Dance and Cricket. Akash and Manish are good in Cricket and Singing. Akash, Prakash and Niraj are good in Singing and Swimming. Niraj and Akash are good in Singing and Cooking. Prakash and Shubham are good in Swimming and Dance.

Who is good in Cricket, Swimming and Dance?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 17

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 18
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Directions: Study the following information carefully and answer the questions that follow.

Manish and Shubham are good in Dance and Cricket. Akash and Manish are good in Cricket and Singing. Akash, Prakash and Niraj are good in Singing and Swimming. Niraj and Akash are good in Singing and Cooking. Prakash and Shubham are good in Swimming and Dance.

Who is good in Singing, Dance and Cricket?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 18

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 19
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Directions: Study the following information carefully and answer the questions that follow.

Manish and Shubham are good in Dance and Cricket. Akash and Manish are good in Cricket and Singing. Akash, Prakash and Niraj are good in Singing and Swimming. Niraj and Akash are good in Singing and Cooking. Prakash and Shubham are good in Swimming and Dance.

Who is good in Singing, Swimming and Dance?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 19

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 20
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Directions: Study the following information carefully and answer the questions that follow.

Manish and Shubham are good in Dance and Cricket. Akash and Manish are good in Cricket and Singing. Akash, Prakash and Niraj are good in Singing and Swimming. Niraj and Akash are good in Singing and Cooking. Prakash and Shubham are good in Swimming and Dance.

Who is good in Singing, Swimming and Cooking but not in Cricket?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 20

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 21
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find the least value of “b” for which 67b326 is divisible by 3?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 21
The required number is b.

Then, = 6+7+b+3+2+6=24+b is divisible by 3.

Therefore, the least value of b is 0.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 22
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Greek architecture of the great age is the expression of men who were, first of all, intellectual artists, kept firmly within the visible world by their mind, but, only second to that, lovers of the human world. The Greek temple is the perfect expression of the pure intellect illumined by the spirit. No other great buildings anywhere approach its simplicity. In the Parthenon straight columns rise to plain capitals; a pediment is sculptured in bold relief; there is nothing more. And yet-here is the Greek miracle this absolute simplicity of structure is alone in majesty of beauty among all the temples and cathedrals and palaces of the world. Majestic but human, truly Greek. No superhuman force as in Egypt; no strange supernatural shapes as in India; the Parthenon is the home of humanity at ease, calm, ordered, sure of itself and the world. The Greeks flung a challenge to nature in the fullness of their joyous strength. They set their temples on the summit of a hill overlooking the wide sea, outlined against the circle of the sky. They would build what was more beautiful than hill and sea and sky and greater than all these. It matters not at all if the temple is large or small; one never thinks of the size. It matters not how much it is in ruins. A few white columns dominate the lofty height at Sounion as securely as the great mass of the Parthenon dominates all the sweep of sea and land around Athens. To the Greek architect man was the master of the world. His mind could understand its laws; his spirit could discover its beauty

The Greeks flung a challenge to nature in the fullness of their joyous strength.” Which of the following best captures the 'challenge' that is being referred to?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 22
To build monuments those were more appealing to the mind and spirit than nature's creations. Not stated explicitly, but this is what is implied.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 23
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Of the 1300 candidates, who were interviewed for a position at a Bank, 900 had a Car, 630 had a motorcycle and 690 had a mobile phone. 300 of them had both, a Car and a motorcycle, 230 had both, a motorcycle and a mobile phone and 360 had both, a Car and mobile phone and 100 had all three. How many candidates had none of the three?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 23

Number of candidates who had none of the three = Total number of candidates - the number of candidates who had at least one of three devices.

The total number of candidates = 1300.

We know that, Total= A + B + C - {A ∩ B + B ∩ C + C ∩ A + 2(A ∩ B ∩ C)} + neither

Therefore, 1300 = 900 + 630 + 690 - {300 + 360 + 230 +200} + neither

=> Neither = [1300 − (900 + 630 + 690) + (300 + 360 + 230 + 200)]

The number of candidates having neither = 170

 

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 24
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The ratio of Adam’s age 4 years ago and Eve’s age after 4 years is 1: 1. Presently, the ratio of their ages is 4 : 3. Find the ratio between Adam’s age 4 years hence and Eve’s age 4 years
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 24

Currently, the ratio of their ages is 4: 3. Suppose, their ages are: 4x and 3x.

Adam’s age 4 years ago = 4x – 4

Eve’s age after 4 years = 3x + 4

The ratio of Adam’s age 4 years ago and Eve's age after 4 years is 1: 1

Therefore,

=

Solving, we get x = 8

We are required to find the ratio between Adam’s age 4 years hence and Eve’s age 4 years ago.

Adam's age: (4x + 4)

Eve's age: (3x – 4)

Putting the value of x, we get:

= = =

So, the required ratio is 9: 5

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 25
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Directions for following 4(four) questions: 

Following chart indicates internal division of electricity usage for two years. Study the graph carefully and answer questions given below.

 

Q. If consumption in one sector is increased it will be marked 2 and decreased then by -1. If it remained unchanged then it will marked as 0. What is total of all 6 sectors?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 25

Increment in agriculture + domestic = 2+2 = 4 Decrement in industrial + loss = -1-1 = -2 Unchanged in rest = 0 Total = 4-2 =2

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 26
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Following chart indicates internal division of electricity usage for two years. Study the graph carefully and answer questions given below.

 

Q. Total electricity consumption in 2012 is 1.5 times of the total electricity consumption in 2011, then what is percentage increase in the electricity consumption of the agricultural sector?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 26

There are two increases— one is the increase in the share of agriculture (66.66%). the other is an increase of 50% in total. Net increase = 150%.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 27
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Following chart indicates internal division of electricity usage for two years. Study the graph carefully and answer questions given below.

 

Q. What is maximum number of sectors one should add to cross 50% consumption for 2012 year?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 27

Start adding sector from lowest and count till you cross 50.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 28
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Following chart indicates internal division of electricity usage for two years. Study the graph carefully and answer questions given below.

 

Q. The agricultural consumption of electricity doubled for given years. By how much percentage has the total electricity consumption grown up?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 28

There is an increase in the share of agriculture (66.66%), to make the agricultural consumption double, total consumption is to be increased by 20%.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 29
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How many solutions do the equation 1/x + 1/(x + 1) = 1/3 have?
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 29

By simplifying it a quadratic in x is obtained with two real roots.

Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 30
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Let f(x) = 2x + 4. Which of the following statements is true?   
Detailed Solution for Sikkim PCS Prelims Paper-II Mock Test- 7 - Question 30

y = 2x + 4 is straight line not passing through origin. It cuts x axis at (-2,0) and y axis at (0,4).

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