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SSC CHSL Tier 1 Full Mock Test: Practice Test 06

Question paper with answer key. Selection Pro

Q1. If TIGER is coded as 2097518, then LION will be coded as:
  1. 1291514
  2. 1281514
  3. 1191514
  4. 1291415

Answer: (A) 1291514

Letters are directly represented by their alphabetical position values: L(12), I(9), O(15), N(14) -> 1291514.

Q2. Select the missing number in the given series: 11, 13, 17, 23, 31, ?
  1. 39
  2. 41
  3. 43
  4. 45

Answer: (B) 41

The differences between successive terms are prime numbers: +2, +4, +6, +8... wait, the differences are +2, +4, +6, +8, so next is +10: 31 + 10 = 41.

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: Thermometer : Temperature :: Hygrometer : ?
  1. Pressure
  2. Humidity
  3. Density
  4. Current

Answer: (B) Humidity

A thermometer measures temperature; a hygrometer measures humidity.

Q4. In a certain code, '+' means '÷', '-' means '+', '×' means '-' and '÷' means '×'. Solve the following equation: 24 + 6 - 8 × 2 ÷ 3
  1. 6
  2. 8
  3. 10
  4. 12

Answer: (A) 6

Replacing operations: 24 ÷ 6 + 8 - 2 × 3 = 4 + 8 - 6 = 6.

Q5. Select the odd option among the following:
  1. Mercury
  2. Venus
  3. Moon
  4. Mars

Answer: (C) Moon

Moon is a natural satellite, whereas Mercury, Venus, and Mars are planets.

Q6. A is B's brother. C is A's father. D is E's brother. E is B's daughter. How is D related to A?
  1. Uncle
  2. Nephew
  3. Son
  4. Brother

Answer: (B) Nephew

Since E is B's daughter and D is E's brother, D is B's son. Since A is B's brother, D is A's nephew.

Q7. Which classical dance form belongs to the state of Tamil Nadu?
  1. Kathak
  2. Bharatanatyam
  3. Odissi
  4. Manipuri

Answer: (B) Bharatanatyam

Bharatanatyam is an ancient classical dance form originating from Tamil Nadu.

Q8. Who was the first Law Minister of independent India?
  1. Sardar Vallabhbhai Patel
  2. Dr. B. R. Ambedkar
  3. Jawaharlal Nehru
  4. Maulana Abul Kalam Azad

Answer: (B) Dr. B. R. Ambedkar

Dr. B. R. Ambedkar served as the first Law and Justice Minister of Independent India.

Q9. Which schedule of the Indian Constitution contains the list of official languages?
  1. 7th Schedule
  2. 8th Schedule
  3. 9th Schedule
  4. 10th Schedule

Answer: (B) 8th Schedule

The 8th Schedule of the Indian Constitution lists the 22 official languages.

Q10. What is the chemical name of common salt?
  1. Sodium Chloride
  2. Sodium Carbonate
  3. Sodium Bicarbonate
  4. Calcium Chloride

Answer: (A) Sodium Chloride

Common salt is chemically known as Sodium Chloride ($NaCl$).

Q11. Which gland in the human body is referred to as the 'Master Gland'?
  1. Thyroid Gland
  2. Pituitary Gland
  3. Adrenal Gland
  4. Pancreas

Answer: (B) Pituitary Gland

The Pituitary Gland is called the Master Gland as it controls functions of many other endocrine glands.

Q12. Which battle laid the foundation of Mughal rule in India in 1526?
  1. First Battle of Panipat
  2. Second Battle of Panipat
  3. Battle of Khanwa
  4. Battle of Plassey

Answer: (A) First Battle of Panipat

Babur defeated Ibrahim Lodi in the First Battle of Panipat in 1526 to establish the Mughal Empire.

Q13. If $x + \frac{1}{x} = 3$, find the value of $x^4 + \frac{1}{x^4}$:
  1. 47
  2. 49
  3. 51
  4. 53

Answer: (A) 47

$x^2 + \frac{1}{x^2} = 3^2 - 2 = 7$. Next, $x^4 + \frac{1}{x^4} = 7^2 - 2 = 47$.

Q14. The ratio of two numbers is 3 : 5 and their HCF is 12. Find their LCM:
  1. 120
  2. 144
  3. 180
  4. 240

Answer: (C) 180

LCM = $a \times b \times HCF = 3 \times 5 \times 12 = 180$.

Q15. A train 200 m long is running at a speed of 54 km/h. How much time will it take to cross a standing pole?
  1. 12 seconds
  2. 13.33 seconds
  3. 15 seconds
  4. 16 seconds

Answer: (B) 13.33 seconds

Speed = $54 \times \frac{5}{18} = 15\text{ m/s}$. Time = $\frac{200}{15} = \frac{40}{3} \approx 13.33\text{ seconds}$.

Q16. The diagonal of a cube is $6\sqrt{3}\text{ cm}$. What is its total surface area?
  1. 144 cm²
  2. 216 cm²
  3. 288 cm²
  4. 324 cm²

Answer: (B) 216 cm²

Diagonal = $a\sqrt{3} = 6\sqrt{3} \Rightarrow a = 6\text{ cm}$. Total Surface Area = $6a^2 = 6 \times 36 = 216\text{ cm}^2$.

Q17. A trader marks goods 25% above cost price and allows a discount of 12% on the marked price. His profit percent is:
  1. 8%
  2. 10%
  3. 12%
  4. 13%

Answer: (B) 10%

Overall % change = $25 - 12 - \frac{25 \times 12}{100} = 13 - 3 = 10\%$.

Q18. If $\tan \theta = 1$, then find the value of $\frac{2\sin \theta \cos \theta}{\cos^2 \theta - \sin^2 \theta}$:
  1. 0
  2. 1
  3. Undefined
  4. 2

Answer: (C) Undefined

If $\tan \theta = 1$, then $\theta = 45^\circ$. $\cos^2 45^\circ - \sin^2 45^\circ = 0$. Division by zero makes it undefined.

Q19. The average of 7 consecutive odd numbers is 27. What is the largest of these numbers?
  1. 31
  2. 33
  3. 35
  4. 37

Answer: (B) 33

For 7 consecutive odd numbers, the average is the middle (4th) number = 27. The largest (7th) number = $27 + (3 \times 2) = 33$.

Q20. Select the correctly spelt word:
  1. Separately
  2. Seperately
  3. Separatly
  4. Seperatley

Answer: (A) Separately

'Separately' is the correct spelling.

Q21. Select the synonym of the given word: METICULOUS
  1. Careful
  2. Careless
  3. Sloppy
  4. Hasty

Answer: (A) Careful

'Meticulous' means showing great attention to detail; very careful and precise.

Q22. Select the antonym of the given word: VANISH
  1. Disappear
  2. Emerge
  3. Fade
  4. Evaporate

Answer: (B) Emerge

'Vanish' means to disappear; 'Emerge' or appear is its direct antonym.

Q23. Identify the segment in the sentence which contains a grammatical error: No sooner did the bell rang than the students ran out of the class.
  1. No sooner did
  2. the bell rang
  3. than the students
  4. ran out of the class

Answer: (B) the bell rang

The auxiliary verb 'did' must be followed by the base form of the main verb ('ring' instead of 'rang').

Q24. Select the most appropriate idiom for the given meaning: 'To be extremely indecisive or unable to make a choice'
  1. Sitting on the fence
  2. Biting off more than you can chew
  3. A piece of cake
  4. In the same boat

Answer: (A) Sitting on the fence

'Sitting on the fence' means remaining neutral or unable to decide between two sides.

Q25. Select the option that can be used as a one-word substitute for: 'A person who hates or distrusts mankind'
  1. Misanthrope
  2. Philanthropist
  3. Misogynist
  4. Optometrist

Answer: (A) Misanthrope

A 'Misanthrope' is a person who dislikes or avoids human society.