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SSC CHSL Tier 1 Full Mock Test: Practice Test 03

Question paper with answer key. Selection Pro

Q1. If CLOCK is coded as 31215311, then WATCH will be coded as:
  1. 2312038
  2. 2311938
  3. 2212038
  4. 2312048

Answer: (A) 2312038

Letters are replaced directly by their positional values in the alphabet: W(23), A(1), T(20), C(3), H(8) -> 2312038.

Q2. Select the missing number in the series: 3, 5, 9, 17, 33, ?
  1. 65
  2. 60
  3. 63
  4. 67

Answer: (A) 65

The differences between adjacent terms are +2, +4, +8, +16. The next difference is +32, so 33 + 32 = 65.

Q3. Select the option that is related to the third term in the same way as the second term is related to the first term: Doctor : Stethoscope :: Sculptor : ?
  1. Anvil
  2. Chisel
  3. Pen
  4. Brush

Answer: (B) Chisel

A stethoscope is the primary tool used by a doctor; similarly, a chisel is used by a sculptor.

Q4. If '+' means '-', '-' means '×', '×' means '÷', and '÷' means '+', then evaluate the expression: 15 - 3 + 10 × 2 ÷ 5
  1. 40
  2. 45
  3. 42
  4. 38

Answer: (A) 40

Replacing operators: 15 × 3 - 10 ÷ 2 + 5 = 45 - 5 + 5 = 40.

Q5. Find the odd number-pair from the following options:
  1. 12 : 144
  2. 13 : 169
  3. 15 : 225
  4. 14 : 198

Answer: (D) 14 : 198

In all other pairs, the second number is the exact square of the first number ($14^2 = 196$, not 198).

Q6. Arrange the following words in a logical and meaningful order: 1. Seed 2. Plant 3. Fruit 4. Tree 5. Flower
  1. 1, 2, 4, 5, 3
  2. 1, 2, 3, 4, 5
  3. 2, 1, 4, 5, 3
  4. 1, 4, 2, 5, 3

Answer: (A) 1, 2, 4, 5, 3

Logical growth order: Seed -> Plant -> Tree -> Flower -> Fruit.

Q7. Who among the following was the author of 'Indika'?
  1. Megasthenes
  2. Kautilya
  3. Fa-Hien
  4. Hiuen Tsang

Answer: (A) Megasthenes

Megasthenes, an ambassador sent by Seleucus I Nicator to Chandragupta Maurya's court, wrote 'Indika'.

Q8. Which article of the Indian Constitution grants powers to the President to grant pardons?
  1. Article 61
  2. Article 72
  3. Article 74
  4. Article 123

Answer: (B) Article 72

Article 72 empowers the President of India to grant pardons, reprieves, respites, or remissions of punishment.

Q9. Which planet in our solar system is known as the 'Red Planet'?
  1. Venus
  2. Mars
  3. Jupiter
  4. Saturn

Answer: (B) Mars

Mars is known as the Red Planet due to the iron oxide present on its surface.

Q10. Which blood group is universally designated as the universal donor?
  1. AB positive
  2. O negative
  3. O positive
  4. AB negative

Answer: (B) O negative

Blood group O negative contains no A, B, or Rh antigens, making it safe for transfusion to all recipients.

Q11. Who is known as the 'Father of Indian Renaissance'?
  1. Raja Ram Mohan Roy
  2. Swami Vivekananda
  3. Rabindranath Tagore
  4. Dadabhai Naoroji

Answer: (A) Raja Ram Mohan Roy

Raja Ram Mohan Roy is considered the Father of Indian Renaissance due to his efforts against social evils.

Q12. The term 'Dunk' or 'Slam Dunk' is associated with which sport?
  1. Volleyball
  2. Basketball
  3. Tennis
  4. Badminton

Answer: (B) Basketball

A slam dunk is a type of basketball shot executed by leaping high and forcing the ball through the basket.

Q13. The average age of 6 members of a family is 25 years. If the age of the youngest member is 5 years, what was the average age of the family at the time of the birth of the youngest member?
  1. 20 years
  2. 22 years
  3. 24 years
  4. 26 years

Answer: (C) 24 years

Sum of current ages = 6 × 25 = 150 years. Total reduction 5 years ago for 6 members = 30 years. Sum of ages at birth = 120. Average among remaining 5 members = 120 / 5 = 24 years.

Q14. If $\sin \theta = \frac{3}{5}$, then the value of $\cos \theta + \tan \theta$ is:
  1. $\frac{31}{20}$
  2. $\frac{29}{20}$
  3. $\frac{7}{5}$
  4. $\frac{8}{5}$

Answer: (A) $\frac{31}{20}$

For $\sin \theta = \frac{3}{5}$, adjacent side = 4. Thus $\cos \theta = \frac{4}{5}$ and $\tan \theta = \frac{3}{4}$. Sum = $\frac{4}{5} + \frac{3}{4} = \frac{16 + 15}{20} = \frac{31}{20}$.

Q15. A train running at a speed of 72 km/h crosses a platform 200 m long in 22 seconds. What is the length of the train?
  1. 220 m
  2. 240 m
  3. 250 m
  4. 280 m

Answer: (B) 240 m

Speed = $72 \times \frac{5}{18} = 20\text{ m/s}$. Distance = Speed × Time = $20 \times 22 = 440\text{ m}$. Length of train = $440 - 200 = 240\text{ m}$.

Q16. Find the compound interest on ₹10,000 at 10% per annum for 2 years, compounded annually:
  1. ₹2,000
  2. ₹2,100
  3. ₹2,200
  4. ₹2,250

Answer: (B) ₹2,100

Amount = $10000 \times (1.1)^2 = ₹12,100$. CI = $12100 - 10000 = ₹2,100$.

Q17. If $x + \frac{1}{x} = 4$, then find the value of $x^2 + \frac{1}{x^2}$:
  1. 12
  2. 14
  3. 16
  4. 18

Answer: (B) 14

$x^2 + \frac{1}{x^2} = \left(x + \frac{1}{x}\right)^2 - 2 = 4^2 - 2 = 14$.

Q18. The ratio of two numbers is 5 : 7. If 6 is added to each number, the ratio becomes 3 : 4. Find the numbers:
  1. 30 and 42
  2. 25 and 35
  3. 20 and 28
  4. 15 and 21

Answer: (A) 30 and 42

Let numbers be $5x$ and $7x$. $\frac{5x+6}{7x+6} = \frac{3}{4} \Rightarrow 20x + 24 = 21x + 18 \Rightarrow x = 6$. Numbers are $5(6)=30$ and $7(6)=42$.

Q19. The diameter of a circle is 28 cm. Find its area ($ \pi = \frac{22}{7}$):
  1. $616\text{ cm}^2$
  2. $308\text{ cm}^2$
  3. $154\text{ cm}^2$
  4. $1232\text{ cm}^2$

Answer: (A) $616\text{ cm}^2$

Radius = 14 cm. Area = $\pi r^2 = \frac{22}{7} \times 14 \times 14 = 616\text{ cm}^2$.

Q20. Select the correctly spelt word:
  1. Accomodate
  2. Acommodate
  3. Accommodate
  4. Acomodate

Answer: (C) Accommodate

'Accommodate' (with double 'c' and double 'm') is the correct spelling.

Q21. Select the synonym of the given word: AUDACIOUS
  1. Bold
  2. Timid
  3. Polite
  4. Cautious

Answer: (A) Bold

'Audacious' means showing a willingness to take surprisingly bold risks.

Q22. Select the antonym of the given word: OBSCURE
  1. Vague
  2. Clear
  3. Dim
  4. Hidden

Answer: (B) Clear

'Obscure' means uncertain or difficult to see; 'Clear' is its direct opposite.

Q23. Identify the segment in the sentence which contains a grammatical error: Each of the girls have performed remarkably well on stage.
  1. Each of the girls
  2. have performed
  3. remarkably well
  4. on stage

Answer: (B) have performed

Distributive pronoun 'Each' requires a singular verb: 'has performed' instead of 'have performed'.

Q24. Select the most appropriate idiom for the given meaning: 'To make a bad situation worse'
  1. Add fuel to the fire
  2. Burn bridges
  3. Break the ice
  4. Hit the nail on the head

Answer: (A) Add fuel to the fire

'Add fuel to the fire' means doing or saying something that makes an already difficult situation worse.

Q25. Select the option that can be used as a one-word substitute for: 'A life history of a person written by himself'
  1. Biography
  2. Autobiography
  3. Bibliography
  4. Calligraphy

Answer: (B) Autobiography

An account of a person's life written by that person is called an 'Autobiography'.