Group 2A Mains 2025 Question Paper – Part 3 (Q 107–140)

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Group 2A Mains 2025 Question Paper – Part 3 (Q 107–140) – 31 வினாக்கள், பாடம்: குரூப் 2A Mains. ஒவ்வொரு வினாவுக்கும் சரியான விடையும் ஒரு வரி விளக்கமும் உண்டு; "Show Answer" அழுத்திப் பாருங்கள். TNPSC குரூப் 1, 2, 2A, 4, SI, TET தேர்வுகளுக்கான இலவசப் பயிற்சி – சண்முகம் ஐ.ஏ.எஸ். அகாடமி, கோயம்புத்தூர்.

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1.  
According to a code language, words in capital letters in Column I are written in small letters in Column II. The letters in Column II are jumbled up. Decode the language and choose the correct code for the word given as questions.
Column I – Column II
(i) CROWDY – (a) blooppv
(ii) SOUND – (b) jkgotv
(iii) CRUX – (c) ijktv
(iv) CRONY – (d) ikmop
(v) NET – (e) cjmv
(vi) ADDRESS – (f) abi
Find the code for NEET

Correct Answer: D [ibba]

விளக்கம்:

Matching by length and common letters: NET=abi, CRONY=ijktv, SOUND=ikmop, ADDRESS=blooppv give N=i, E=b, T=a; so NEET = i b b a.

2.  
Choose the number group which is different from others.

Correct Answer: D [37, 14, 19, 7]

விளக்கம்:

All other groups contain only prime numbers; 14 in group (D) is not prime.

3.  
Choose that set of numbers from the four alternative sets, that is similar to the given set : (81, 77, 69)

Correct Answer: A [(56, 52, 44)]

விளக்கம்:

81 −4 = 77, 77 −8 = 69; likewise 56 −4 = 52, 52 −8 = 44.

4.  
In the following questions, select a figure from amongst the four alternatives, which when placed in the blank space fig(X) would complete the pattern.

Correct Answer: D [Figure (D)]

விளக்கம்:

The pattern is symmetric in four quarters; the bottom-right quarter is the mirror of the bottom-left one: leaf at the top-left (centre) corner, curls on the right side and bottom – figure (D).

5.  
From the options, choose the correct "water-image" of the fig (X).

Correct Answer: A [Figure (A)]

விளக்கம்:

A water image flips top and bottom: the lotus turns upside down and the many rays at the bottom move to the top, leaving two short rays below – figure (A).

6.  
Choose from the options the correct mirror image of the given figure.

Correct Answer: C [Figure (C)]

விளக்கம்:

Given figure: left face hatched, right face black. A vertical (side) mirror swaps left and right – black on the left, hatched on the right, base unchanged – figure (C).

7.  
Statement : Smoking is one of those human weaknesses which tend to test the will power of the smoker to the edge.
Conclusion :
I. It is very difficult for the smokers to give up smoking even if they want to do so.
II. Human beings have other weaknesses as well.

Correct Answer: D [If both I and II follows]

விளக்கம்:

'Tests will power to the edge' means quitting is very hard (I); 'one of those weaknesses' implies other weaknesses exist (II).

8.  
Which word of the options cannot be formed using the letters of the following word :
ENDEAVORS

Correct Answer: A [VOTE]

விளக்கம்:

ENDEAVORS has no letter T, so VOTE cannot be formed.

9.  
These questions are based on the following information :
(i) 'A × B' means 'A is Mother of B'
(ii) 'A + B' means 'A is Son of B'
In B × J + P, how is B related to P?

Correct Answer: C [Wife]

விளக்கம்:

B is the mother of J and J is the son of P, so P is J's father and B is P's wife.

10.  
Find out the right option for conclusions to the statements given.
Statements : All candles are lamps
All lamps are bulbs
Conclusions :
I. All candles are bulbs
II. All bulbs are candles

Correct Answer: A [Only I follows]

விளக்கம்:

Candles ⊂ lamps ⊂ bulbs, so all candles are bulbs (I); the reverse (II) does not follow.

11.  
In how many ways a committee consisting of 3 men and 5 women can be formed from 5 men and 6 women?

Correct Answer: C [60]

விளக்கம்:

5C3 × 6C5 = 10 × 6 = 60.

12.  
A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if atleast one black ball is to be included in the draw?

Correct Answer: C [64]

விளக்கம்:

Total 9C3 = 84; with no black ball 6C3 = 20; at least one black = 84 − 20 = 64.

13.  
In the given figure (i),(ii) are related to each other. Find the odd one.

Correct Answer: B [2]

விளக்கம்:

In pairs 1, 3 and 4, figure (ii) is figure (i) turned 90° clockwise; in pair 2 the house is turned 90° anticlockwise (roof moves to the left).

14.  
A piece of ice floats on water.

Correct Answer: D [Always]

விளக்கம்:

Ice is less dense than water (about 0.92 g/cm³), so it always floats.

15.  
In a class 2/5 of the students are girls and rest are boys. If 1/5 of the girls and 1/4 of the boys are absent, which part of the total number of students is present?

Correct Answer: B [77/100]

விளக்கம்:

Girls present = 2/5 × 4/5 = 8/25 = 32/100; boys present = 3/5 × 3/4 = 45/100; total 77/100.

16.  
Choose the correct alternative :
a b __ __ b a a __ __ a b __

Correct Answer: B [aabaa]

விளக்கம்:

Filling aabaa gives abaabaabaaba = 'aba' repeated four times.

17.  
Study the diagram below and identify the region representing youth who are unemployed but not educated.
[Venn diagram: Youth, Educated, Employed circles; regions 2–8]

Correct Answer: A [2 only]

விளக்கம்:

Region 2 lies only in the Youth circle – outside both Educated and Employed.

18.  
The following question is based on a dice numbered 1 to 6 in different ways as indicated.
If 2 is opposite to 3 and adjacent to 4 and 6 then which of the following statements is necessarily true?

Correct Answer: D [1 is adjacent to 2 and 3]

விளக்கம்:

Since 2 and 3 are opposite, every other face (1, 4, 5, 6) touches both 2 and 3; so 1 is surely adjacent to 2 and 3.

19.  
If A is B's sister, C is B's mother, D is C's father and E is D's mother, then how is A related to D?

Correct Answer: A [Grand Daughter]

விளக்கம்:

A is C's daughter (B's sister) and D is C's father, so A is D's granddaughter.

20.  
Pointing towards a woman, Raj said "She is the daughter of my wife's sister". How is the wife of Raj related to the woman?

Correct Answer: A [Aunt]

விளக்கம்:

The woman is the daughter of Raj's wife's sister, so Raj's wife is her mother's sister – aunt.

21.  
In a certain code language, '481' means 'Sky in blue', '246' means 'Sea in deep' and '698' means 'Sea looks blue'. What number is the code for 'looks'?

Correct Answer: D [9]

விளக்கம்:

Sea = 6 (common to 246 and 698), blue = 8 (common to 481 and 698); so looks = 9.

22.  
The same relationship obtain in one of the 4 alternative given below :
Evaporation : Cloud : Rain

Correct Answer: B [Accident : Injury : Pain]

விளக்கம்:

A cause-and-effect chain: evaporation causes cloud which causes rain; likewise accident causes injury which causes pain.

23.  
Choose the best alternative as the answer :
Which one of the following is always found in Bravery?

Correct Answer: A [Courage]

விளக்கம்:

Bravery cannot exist without courage; experience, power or knowledge are not essential.

24.  
Which figure in the option is embedded in the pattern given in figure (X)?

Correct Answer: C [Figure (C)]

விளக்கம்:

Figure (X) (a swastika-like shape) is hidden in (C): its central cross plus half of each side of the square form exactly the shape of (X).

25.  
Study the following arrangement carefully and answer the question given
RD15E%K3J19P8#A2B$KM6W@N4©T*7FH
How many such consonants are there in the above arrangement, each of which is immediately preceded by a symbol and immediately followed by a number?

Correct Answer: B [Two]

விளக்கம்:

Symbol–consonant–number occurs twice: % K 3 and @ N 4.

26.  
This question is based on the following information :
A # B means A is divided by B
A * B means A is multiplied by B
Salary of Ram is (A) 80% of salary of Ravi is (B).
Find out the right choice to present it :

Correct Answer: C [A = (80 # 100) * B]

விளக்கம்:

A = 80% of B = (80 ÷ 100) × B = (80 # 100) * B.

27.  
Fill in the blanks with a suitable figure from the option given
[L-shape (2 lines), triangle (3), square (4), ?]

Correct Answer: B [Pentagon]

விளக்கம்:

The number of sides increases by one: 2, 3, 4, so next is a 5-sided figure – pentagon.

28.  
Statement : Nuclear power cannot make a country secure.
Courses of Action
I : We should stop further increasing our nuclear power
II : We should destroy out nuclear capability
III : We should focus on improving diplomatic relations

Correct Answer: C [Only III follows]

விளக்கம்:

Nuclear power alone does not give security; it does not mean it must be stopped or destroyed. Improving diplomatic relations (III) is the practical course.

29.  
Find the missing number
[36, 216 → 6; 25, 125 → 5; ?, 64 → 4]

Correct Answer: D [16]

விளக்கம்:

Left = square and right = cube of the bottom number: 6² = 36, 6³ = 216; so 4² = 16.

30.  
January 1, 2007 was Monday. What day of the week lies on January 1, 2008?

Correct Answer: B [Tuesday]

விளக்கம்:

2007 is an ordinary year (365 days = 52 weeks + 1 odd day), so Monday + 1 = Tuesday.

31.  
If 1st January of year 2020 is Thursday then what day of the week lies on 1st January 2021?

Correct Answer: D [Saturday]

விளக்கம்:

2020 is a leap year (366 days = 52 weeks + 2 odd days), so Thursday + 2 = Saturday.

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