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UPSC Exam  >  UPSC Test  >   Indian Forest Service (IFoS) Mock Test Series  >  UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - UPSC MCQ

UPSC Indian Forest Service (IFoS) Prelims CSAT (GS2) Mock Test- 3 Free


Full Mock Test & Solutions: UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 (80 Questions)

You can boost your UPSC 2026 exam preparation with this UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 (available with detailed solutions).. This mock test has been designed with the analysis of important topics, recent trends of the exam, and previous year questions of the last 3-years. All the questions have been designed to mirror the official pattern of UPSC 2026 exam, helping you build speed, accuracy as per the actual exam.

Mock Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 120 minutes
  • - Total Questions: 80
  • - Analysis: Detailed Solutions & Performance Insights

Sign up on EduRev for free and get access to these mock tests, get your All India Rank, and identify your weak areas to improve your marks & rank in the actual exam.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 1
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Two statements S1 and S2 are given below followed by a question:

S1: Rajesh is taller than Rohit and shorter than Radha.

S2: Anu is shorter than Rohit but taller than Vikas.

Question: Who is the shortest among five?

Which one of the following is correct in respect of the Statement and the questions?

Detailed Solution: Question 1

S1: Rajesh is taller than Rohit and shorter than Radha.

Radha > Rajesh > Rohit

So, S1 alone is not sufficient to answer the question.

S2: Anu is shorter than Rohit but taller than Vikas.

Rohit > Anu > Vikas

If we combine both the statements, we get:

Radha > Rajesh > Rohit > Anu > Vikas

Therefore, "Both S1 and S2 are sufficient to answer the question, but neither S1 alone nor S2 alone is sufficient to answer the question".

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 2
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What is the crucial message conveyed by the above passage? 

Detailed Solution: Question 2

The passage mainly discusses how social factors like respectability of drinking and availability of liquor influence alcohol consumption. It also mentions that prohibition can have some preventive effect but does not fully stop alcohol use. So, the focus is on social factors affecting alcoholism.

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UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 3
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Which one of the following is an inference drawn from the above passage?

Detailed Solution: Question 3

In the passage, the author has talked about the need to restructure the educational system of the country, keeping in mind the sweeping changes around us.

In this, he/she has given significance to the teaching-learning relationship: “…shaken the very foundations of the teaching-learning process.” and “How should the teacher-student relationship be organized…”

This implies that the way the teaching-learning process is organized, plays a very important role in bringing about effective results.

Let’s look at other options:

  • Option (A) is not an inference, rather a conclusion.
  • Option (C) is mentioned in the passage: “Even the best teacher with years of experience and unquestionable dedication for the profession may not necessarily see the need to take these questions seriously and look for new, contemporary answers.”
  • Option (D) is irrelevant.

Therefore, the correct implication drawn from the passage is that the focus on teacher-learner must be at the forefront of any educational restructuring to bring in effective results.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 4
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Which of the following can be said to be the main objective of the passage?

Detailed Solution: Question 4

In the passage, the author has highlighted the need to redesign the educational system so as to accommodate the cultural, social and economic changes that are happening in society.

However, more than this, the author has emphasized the need to bring in multi-faceted changes in the teaching-learning process as underscored in the following lines: “But more important are some more nuanced questions: How should the teacher-student relationship…” and “Even the best teacher with years of experience… and look for new, contemporary answers.”

Therefore, the main objective of the passage can be said to be propounding the need for focus on reorienting the teaching-learning process in the fast-transitioning world.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 5
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A sum of money at some rate of simple interest amounts to Rs. 2,900 in 8 years and to Rs. 3,000 in 10 years. The rate of interest per annum is:

Detailed Solution: Question 5

Given,

The sum of money at some rate of simple interest amounts to Rs. 2,900 in 8 years.

Principal + interest for 8 years =2900 ............(i)

The sum of money at some rate of simple interest amounts to Rs 3000 in 10 years.

Principal + interest for 10 years =3000 ............(ii)

Subtracting equation (i) from (ii), we get

Interest for 2 years

If Interest for 2 years

Then Interest for 8 years Rs. 400

From equation (i),

Principal = (2900-400) = Rs. 2500

Therefore, rate

Rate

Rate of interest per annum is .

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 6
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Which among the following is the most logical and rational inference that can be made from the above passage?

Detailed Solution: Question 6

According to the passage, “definitions create perverse incentive structures that might thwart firms from graduating from small to medium, such as service tax exemptions”. Therefore, option (C) is correct.

Further, the passage does not contain any information about the relative contribution of the unorganized and organized sector to national GDP. Therefore, option (A) is incorrect.

Similarly, option (B) is wrong as the passage does not give any clue about the end results of schemes and interventions in MSMEs.

Option (D) is irrelevant to the passage and therefore, incorrect.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 7
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Direction: Choose the correct alternative from the given ones that will complete the series.

1, 2, 3, 14, 5, 34, 7, ?, ?

Detailed Solution: Question 7


 

  1. Observe the positions of odd terms:

    • Terms in positions 1, 3, 5, 7,… are simply the odd numbers 1, 3, 5, 7,…

    • So
      • a₁ = 1
      • a₃ = 3
      • a₅ = 5
      • a₇ = 7
      • Therefore a₉ = 9 (the next odd number).

  2. Look at the even‐indexed terms (positions 2, 4, 6, 8,…):

    • a₂ = 2

    • a₄ = 14

    • a₆ = 34

    • We need a₈.

  3. Find a pattern for each “even” term in relation to the preceding odd term:

    • Pair up (odd → next even):
      1 → 2
      3 → 14
      5 → 34
      7 → ?

    • Notice:
      • From 1 to 2: 2 = 1² + 1
      • From 3 to 14: 14 = 3² + 5
      • From 5 to 34: 34 = 5² + 9

    • The extra amount added to the square grows by 4 each time:
      – When odd = 1, add 1
      – When odd = 3, add 5 (= 1 + 4)
      – When odd = 5, add 9 (= 1 + 2·4)

    • In general, if the kᵗʰ “odd” term is (2k − 1), you add [1 + (k−1)·4].

  4. Apply the rule to find a₈ (the 4ᵗʰ even term):

    • For k = 4, the odd term is 2·4 − 1 = 7.

    • The amount to add = 1 + (4−1)·4 = 1 + 12 = 13.

    • So a₈ = 7² + 13 = 49 + 13 = 62.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 8
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Which of the following has been assumed in the passage?

I. Many people feel sick after swimming.

II. Invaluable life skills can be learned from swimming.

III. Swimmers are always hungry.

IV. Swimming makes one very tired.

Detailed Solution: Question 8

I. Many people feel sick after swimming.
Valid assumption – The passage discusses nausea and advises how to prevent it, which implies that some swimmers do experience sickness.

II. Invaluable life skills can be learned from swimming.
Valid assumption – The passage mentions qualities like determination, concentration, teamwork, and overcoming fear, suggesting that swimming helps develop these important life skills.

III. Swimmers are always hungry.
Not a valid assumption – The passage only talks about a temporary hunger response due to cold water, not that swimmers are constantly hungry.

IV. Swimming makes one very tired.
Valid assumption – The passage mentions that swimming in cold water leads to more energy expenditure and fatigue, implying that swimming can cause tiredness.

Final answer: I, II, and IV are assumed in the passage.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 9
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Which of the following can be implied from the given passage?

Detailed Solution: Question 9

Let us note the following:

An implication is a conclusion that can be drawn from the passage although it is not explicitly stated.

The author is explaining that rest and relaxation are important along with hard work.

Hence, the third option is the correct implication.

The first, second, and fourth options find a direct mention in the passage.

Hence, these cannot be implications.

These have been used to prove the fourth option.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 10
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Which of the following can be inferred from the given passage?

Detailed Solution: Question 10

Statement A: Crown fire spreads faster compared to surface fire
This is implied from the passage. It mentions that crown fires in coniferous forests burn furiously due to resinous material. This suggests that they can spread more intensely and rapidly.

Statement B: Forest fires can be categorized as surface fire and crown fire
This is directly stated in the passage: "A forest fire may burn primarily as a surface fire... The other type of forest fire is a crown fire..."

Statement C: Crown fire is more dangerous than surface fire
Also directly stated: "A crown fire is particularly very dangerous..."
All the three statements are correct.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 11
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hC, rT, jU, bK and xQ are five friends. jU is poorer than only xQ. bK is richer than hC.  rT is not the poorest among these five people. Fourth poorest person has a net worth of $5 billion and poorest among them have a net worth of $ 2 billion.

In this context, which one of the following statements can be inferred?

Detailed Solution: Question 11

Persons: hC, rT, jU, bK and xQ.

i) jU is poorer than only xQ.

ii) bK is richer than hC.

Case 1: xQ > jU > _ > bK > hC

Case 2: xQ > jU > bK > _ > hC

Case 3: xQ > jU > bK > hC > _

iii) rT is not the poorest among these five people.

This eliminates case 3.

iv) Fourth poorest person has a net worth of $5 billion and poorest among them have a net worth of $ 2 billion.

Case 1: xQ > jU($ 5 billion) > rT > bK > hC($ 2 billion)

Case 2: xQ > jU($ 5 billion) > bK > rT > hC($ 2 billion)

1) Net worth of rT is $ 5.5 billion. → False

2) Net worth of xQ is less than $ 5 billion. → False

3) Net worth of bK is more than $2 billion but less than $5 billion. → True

4) Two persons are richer than bK. → False(as it is possible but not definite)

Therefore, 'Net worth of bK is more than $2 billion but less than $5 billion.' is the statement that can be inferred from the given information.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 12
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Two statements S1 and S2 are given below followed by a question:

S1: The ratio of the efficiency to complete the work of A, B, and C is 3 : 4 : 5 respectively.

S2: Total amount A, B and C earned by working together is ₹ 7200.

Question: What is the amount earned by B alone?

Which one of the following is correct in respect of the Statement and the questions?

Detailed Solution: Question 12

S1: The ratio of the efficiency of A, B, and C is 3 : 4 : 5 respectively.

Using this statement we can only determine the efficiency of A, B, and C.

So, S1 alone is not sufficient to know the amount earned by B alone.

S2: Total amount A, B and C earned by working together is ₹ 7200.

So, S2 alone is not sufficient to know the amount earned by B alone.

If we combine both the statements,

Efficiency of A, B, and C = 3 ∶ 4 ∶ 5

Total amount = ₹ 7200

Amount earned by B alone = = ₹ 2400

So, using both statements we can calculate the amount earned by B.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 13
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In a three-digit number (N), the unit and the tens digit are interchanged to form a new number, which is greater than the original number by 54. Let the digit at the unit place of the original number be x, then find all the possible values of x.

Detailed Solution: Question 13

Any number can be formed by the summation of the product of the place value and its digits.

Ex- 345 = 3 × 100 + 4 × 10 + 5

Suppose the three-digit number be 100p + 10q + x

After interchanging the unit and tens digit of the number,

The new number = 100p + 10x + q

According to question:

(100p + 10x + q) – (100p + 10q + x) = 54

⇒ 9x – 9q = 54

⇒ x – q = 6

Here, the digits can not be in negative so the value of x should be greater than or equal to 6 and the maximum value of any digit is 9 so we can write

⇒ 6 ≤ x ≤ 9

x = 6, 7, 8 and 9.

∴ The possible value of x is 6, 7, 8 and 9

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 14
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Two statements S1 and S2 are given below followed by a Question:

S1: Year before year "A" ends on Monday.

S2: Year before year "A" has one day more than year "A".

Question: On which day of the week, year "A" ends?

Which one of the following is correct in respect of the above statements and the question?

Detailed Solution: Question 14

S1: Year before year "A" ends on Monday.

From S1, it is clear that Year "A" starts on Tuesday but it can end on Tuesday (if non-leap year) or on Wednesday (if a Leap year).

The day on which year "A" ends is still not clear.

Thus, S1 alone is not sufficient.

S2: Year before year "A" has one day more than year "A".

From S2, it is clear that the year "A" does is not a leap year.

The day on which year "A" ends is still not clear.

Thus, S2 alone is not sufficient.

If we combine S1 and S2,

We get, that year "A" starts on Tuesday and is not a leap year, therefore, ends on Tuesday as well.

Thus, S1 and S2 together are sufficient.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 15
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The following bar graph shows the population of six countries (in millions) in 2010 and 2020. 


What is the range of percentage increase in population in all countries from 2010 to 2020?

Detailed Solution: Question 15

Calculation:

% Increase in population of the Countries in 2010 in India: (145 - 120)/120 × 100 = 20.83%

% Increase in population of the Countries in 2010 in USA = (80 - 65)/65 × 100 = 23.07%

% Increase in population of the Countries in 2010 in Shri Lanka = (51 - 40)/40 × 100 = 27.5%

% Increase in population of the Countries in 2010 in China = (152 - 130)/130 × 100 = 16.92%

% Increase in population of the Countries in 2010 in Japan = (61 - 50)/50 × 100 = 22%

% Increase in population of the Countries in 2010 in England = (83 - 70) × 100 = 18.57%

Hence, The Correct range of percentage is 16.92 percent - 27.5 percent.

Hence, The Correct option is 1.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 16
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Select the option which is related to the third word in the same way as the second word is related to the first word (the words should be treated as meaningful Hindi words and related to each other on the basis of number of letters/consonants/vowels in the word) should not be related)

Open : Secret :: Outspoken: ___________

Detailed Solution: Question 16

Secret is the antonym of Open.

Similarly;

Cheater is the antonym of Outspoken.

Hence, the correct answer is "Cheater".

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 17
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A committee of three persons is to be formed out of seven persons A, B, C, D, E, F and G according to the following conditions.

(i) Either A or C or both must be chosen

(ii) If A or B is chosen, the other must also be chosen.

(iii) C and D can't be chosen together

If D is chosen, which of the following could also be chosen ?

Detailed Solution: Question 17

The pattern followed here is:

Given:

(i) Either A or C or both must be chosen,

(ii) If A or B is chosen, the other must also be chosen.

(iii) C and Can't be chosen together.

If D is chosen then C can't be chosen, If A is chosen then B also be chosen because A or B must be chosen.

So, if D chose then A and B could also be chosen

Hence, the correct answer is "A B".

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 18
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Solutions A and B contain acid to water in the ratio 4 ∶ 5 and 5 ∶ 7, respectively. Three litres of A is mixed with 5 litres of B. In 960 ml of this solution, how much acid (in ml) should be mixed so that the ratio of acid to water becomes 1 ∶ 1 in the resulting solution?

Detailed Solution: Question 18

Given:

In solution A, Acid : Water = 4 : 5

In solution B, Acid : Water = 5 : 7

Calculation:

Amount of acid in 3 ltrs of A = 4/9 × 3 = 4/3 ltrs.

Amount of acid in 5 ltrs. of B = 5/12 × 5 = 25/12 ltrs.

Total acid in (3 + 5) = 8 ltrs. of A and B = 4/3 + 25/12 = 41/12 ltrs.

Total acid content in 960 ml of such solution

⇒ (0.96 × 41/12)/8 = 0.41 ltrs. = 410 ml

Total water content in 960 ml of such solution = 960 - 410 = 550 ml

Let, the amount of acid to be added is 'a'.

According to the question,

⇒ (410 + a)/550 = 1

⇒ 410 + a = 550

⇒ a = 550 - 410 = 140 ml

∴ 140 ml of acid should be mixed.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 19
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Six squares are coloured, front and back, red (R), blue (B), yellow (Y), green (G), white (W) and orange (O) and are hinged together as shown in the figure given below. If they are folded to form a cube, what would be the face opposite the white face ?

Detailed Solution: Question 19

Given:

From the above figure it can be concluded that:

G (Green) is opposite O (Orange).

B  (Blue) is opposite W (White).

and R (Red) is opposite Y(Yellow).

Hence, B (Blue) would be the face opposite the white face. 

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 20
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The price of petrol increased by 8% on 1 April 22, when compared to the price as on 1 January 22. If it increased again by 5% on 31 September 22, what was the price of petrol (in Rs./ltr.) on 1 January 22, if the price on 31 September 22 was Rs. 96.39/ltr.? 

Detailed Solution: Question 20

Given:

Percentage increase in price on 1 April 22 is 8%

Percentage increase in price on 31 September 22 is 5%

Price on 31 September 22: Rs. 96.39/ltr.

Concept used:

Concept of Successive Percentage Change.

Calculation:

Let the price of the petrol on 1 January be Rs. X/ltr then,

According to the questions,

⇒ X × 108/100 × 105/100 = 96.39

⇒ X = 85/lit.

∴ The price of the petrol on 1 January 22, is Rs.85/litres.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 21
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Ramu and Somu can complete th of the whole work together in 30 days while Ramu alone can complete th of the work in days. Find how many days will it take for Somu to complete the work alone?

Detailed Solution: Question 21

Given:

Ramu and Somu can complete th of the whole work together in 30 days

Ramu alone can complete th of the work in  days

Formula used: 

Work = efficiency × time

Calculation:

th of the whole work = 30 days

The whole work completed by Ramu and Somu 

⇒  30 ×  = 42 days 

th of the work  = 189/4 days

The whole work completed by Ramu

⇒   ×  = 63 days

LCM of [42, 63] is 126 let work be 126 unit

Efficiency                             T.W 

3 unit/day    R+S    42     

                                         126 unit

2 unit/day     R       63

Somu efficiency = 3 - 2 = 1 unit/day

126 unit will be completed in 126 day

1/2 of 126 unit work will be completed in 126/2 = 63 day 

∴ The correct answer is 63 days

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 22
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Which among the following is the most logical and rational assumption that can be made from the above passage?

Detailed Solution: Question 22

The passage highlights:

  • Municipal corporations are understaffed.
  • Staff lack technical and managerial competencies.
  • Urban service delivery is complex and requires specialized skills.
  • Current recruitment does not consider these required competencies.

From this, the most logical and rational assumption is that if municipal bodies had adequately skilled and competent staff, urban service delivery and quality of life in cities would improve.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 23
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Why is the methodology adopted in India to count the 'poor' debatable?

Detailed Solution: Question 23

The correct answer is It is based on the proposition of poverty as meagre income or buying capacity.

Key Points

  • The given passage revolves around the definition of the poverty line which concentrates only on 'income poverty' masking the other forms of poverty.
  •  As stated in the passage, 'If poverty is ultimately about deprivations affecting human well-being, then income poverty is only one aspect of it. Poverty of a life, in our view, lies not merely in the impoverished state in which the person actually lives, but also in the lack of real opportunity given by social constraints as well as personal circumstances–to choose other types of living.' 
  • The other kinds of poverty like lack of opportunities due to social constraints, and freedom to choose the type of living are not being included in the definition of poverty.
  • Hence, we can say that methodology adopted in India to count the 'poor' is debatable and it needs to be inclusive in nature. 
  • Hence, option 4 is correct. 
  • Options 2 and 3 are cannot be the answer, rural/ urban poor and global standards are not being discussed in the passage. 

Confusion Points

  •  Option 1 might be confusing sometimes, the matter here is not about being confused but the wrong method is used. 

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 24
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Why is income poverty only one measure of counting the 'poor'?

Detailed Solution: Question 24

The correct answer is ​It talks of only one kind of deprivation ignoring all others.

Key Points

  • As stated in the passage, 'If poverty is ultimately about deprivations affecting human well-being, then income poverty is only one aspect of it. Poverty of a life, in our view, lies not merely in the impoverished state in which the person actually lives, but also in the lack of real opportunity given by social constraints as well as personal circumstances–to choose other types of living.'
  • Hence, option 1 is the correct answer.
  • Option 2 is opposite to the view mentioned in the passage, the passage does describe the other form of poverty like lack of real opportunity given by social constraints. Other forms of poverty also have an impact on human life.
  • Options 3 and 4 are not mentioned in the passage, irrelevant to the given question.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 25
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Which of the following statements best reflects the underlying tone of the passage?

Detailed Solution: Question 25

The correct answer is Option 1.

Key Points

  • Option 1 is the underlying tone, we can imply that only an educated population can make use of the benefits of economic progress which is leisure by view of enjoyment. 
  • Options 2 and 4, these statements are out of context as the author concentrates on using leisure rather than creating leisure.
  • Option 3, this statement is also out of context as it only specifies the educated population and increase in the happiness but is not linked with leisure.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 26
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Which one of the following is the most logical and rational inference that can be made from the above passage?

Detailed Solution: Question 26

The correct answer is 'Sometimes, the campaigns against foreign plants are pointless.'

Key Points

  • The given passage talks about the positive points of foreign plants that are considered as invasive.
  • But if looked at closely, one finds that they increase the biological diversity in a region.
  • Or, they tend to colonize habitats that have little species left such as a polluted lake.
  • In such cases, campaign against foreign plants becomes useless.

Therefore, the most logical inference that can be drawn is that sometimes the campaigns against foreign plants are pointless.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 27
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X, Y and Z invest capitals in the ratio 18 ∶ 20 ∶ 25. After 6 months, X increases his capital by  and Y decreases his capital by 50% and no change in the capital of Z. What is the share of Y in the profit of Rs. 15.25 lakhs at the end of a year?  

Detailed Solution: Question 27

Given:

X, Y and Z invest capitals in the ratio 18 ∶ 20 ∶ 25.

After 6 months, X increases his capital by  and Y decreases his capital by 50%, and no change in the capital of Z.

The profit is Rs. 15.25 lakhs at the end of the year.

Concept used:

1. Profit in a partnership business is always distributed in the ratio of capital investment.

2. ​

Calculation:

So, the new ratio of their investment on the annual basis

⇒ {(18 × 6) + (18 + 18 × 1/3) × 6} : {20 × 6 + (20 - 20 × 50%) × 6} : (25 × 12)

⇒ 252 : 180 : 300

⇒ 21 : 15 : 25

Now, the Y's share of the profit

⇒ 15.25 lakhs × 15/(21 + 15 + 25)

⇒ 3.75 lakhs = Rs. 3,75,000

∴ The share of Y in the profit of Rs. 15.25 lakhs at the end of a year is Rs. 3,75,000.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 28
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360 ml of mixture A containing x% more water than milk in it is mixed with 480 ml of mixture B which contains 1.6x% more water than milk in it. Total quantity of mixture C is 240 ml and it contains (x +5)% of milk and 168 ml of water in it.

Which of the following statements(s) is/are true.

1. x = 25

2. Quantity of milk in mixture A is 200 ml.

3. Quantity of milk in mixture B is 160 ml.

Detailed Solution: Question 28

Let the quantity of milk in mixture A is a ml.

So, quantity of water in mixture A = a(1+x/100) ml

So, a + a(1 + x/100) = 360

Or, a{1 + 1 + x/100} = 360

Or, a{2 + x/100} = 360 ..............(1)

Let quantity of milk in mixture B is b ml.

So, quantity of of water in mixture B = b{1 + 1.6/100} ml

So, b + b{1 + 1.6x/100} = 480

Or, b{1 + 1 + 1.6x/100} = 480

Or, b{2 + 1.6x/100} = 480.................. (2)

{(x + 5) / 100} × 240 = 72

{(x + 5) / 100} × 240 = 72

So, x + 5 = 30

Or, x = 25

Solving equation 1 and 2, we get-

a = 160, b = 200

For 1-

Since x = 25

So, 1 is true.

For 2-

Since, quantity of milk in mixture A = a = 160 ml

So, 2 can not be true.

For 3-

Since, quantity of milk in mixture B = b = 200 ml.

So, 3 can not be true.

Hence, correct answer is option 1.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 29
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What is the crucial message conveyed by the above passage? 

Detailed Solution: Question 29

The correct answer is For India, food security collides with trade.

Key Points

  • In the passage, the author has talked about the subsidy norms of WTO and that it should not exceed 10% of agricultural production for developing countries.
  • However, the food security programme of India requires the Indian government to support farmers through MSP and distribute the procured food grains to the public through PDS.
  • With the increasing population and deteriorating economic condition of farmers, the government might need to increase MSP periodically.
  • This support might cross the maximum limit set by WTO agreement in coming years.

Therefore, food security programme of India collides with WTO agreement.

UPSC Indian Forest Service Prelims CSAT (GS2) Mock Test- 3 - Question 30
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If $ means 'divided by'; @ means 'multiplied by'; # means 'minus', then the value of 10#5@1$5 is

Detailed Solution: Question 30

$ means 'divided by'; @ means 'multiplied by'; # means 'minus'

Replacing the symbols in given expression, we get

10 - 5 × 1 ÷ 5

Applying BODMAS rule, we get

10 - 5 × 0.2

= 10 - 1

= 9

Hence, 9 is the correct answer.

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This mock test contains 80 questions designed to replicate the pattern, difficulty level and time pressure of the actual UPSC exam. It is part of UPSC Indian Forest Service (IFoS) Mock Test Series on EduRev, covering all the topics that are being asked as per the current UPSC syllabus. Attempting this test under timed conditions will help you assess your exam readiness, identify subject-wise weak areas, and improve your speed and accuracy before the actual exam.

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