TN Police SI 2023 previous year paper practice · PYQ-pattern set

TN Police SI 2023 PYQ-pattern questions

Showing 10 of the 18 PYQ-pattern questions in this set — freshly worded in that year's pattern, not the original questions. Answers and solutions open under each question.

1. Q1 · Latest Developments in Science and Technology

   What technology uses biological characteristics like fingerprints for identification?

   • A. Cryptography
   • B. Biometrics
   • C. Photonics
   • D. Nanotechnology
   Answer and solution

   Answer: B

   Biometrics technology uses unique biological characteristics such as fingerprints, facial recognition, or iris patterns for personal identification and authentication.

2. Q2 · National and International Awards

   The Bharat Ratna, India's highest civilian award, was instituted in which year?

   • A. 1947
   • B. 1950
   • C. 1954
   • D. 1960
   Answer and solution

   Answer: C

   The Bharat Ratna was instituted in 1954 to recognize exceptional service/performance of the highest order in any field of human endeavour.

3. Q3 · Current Affairs

   Tamil Nadu Chief Minister announced a reward of $1 million for successfully decoding which ancient script?

   • A. Brahmi Script
   • B. Indus Valley Script
   • C. Grantha Script
   • D. Vatteluttu Script
   Answer and solution

   Answer: B

   CM Stalin pledged $1 million to decode the undeciphered Indus Valley script, emphasizing its potential connections to Tamil Nadu's pre-Sangam era through Keeladi excavations.

4. Q4 · Classification

   Find the odd one out from the following group:

   • A. Banana
   • B. Mango
   • C. Carrot
   • D. Apple
   Answer and solution

   Answer: C

   Carrot is a vegetable, while Banana, Mango, and Apple are all fruits. Hence, Carrot is the odd one out.

5. Q5 · Syllogism

   Statements: All doctors are scientists. Some scientists are researchers. No researcher is a teacher. Conclusions: I. Some doctors are researchers. II. No scientist is a teacher. Which conclusion follows?

   • A. Only I follows
   • B. Only II follows
   • C. Both I and II follow
   • D. Neither I nor II follows
   Answer and solution

   Answer: D

   Conclusion I is not definite because the overlap between doctors and researchers is not established. Conclusion II is false because only 'no researcher is a teacher' is given, not all scientists.

6. Q6 · Statements and Assumptions

   Statement: 'To improve traffic flow, the government plans to construct an elevated highway through the city.' Which assumption is implicit?

   • A. The current traffic situation is satisfactory
   • B. Elevated highways are effective in reducing congestion
   • C. The public opposes highway construction
   • D. No other solution is available
   Answer and solution

   Answer: B

   The government's plan assumes that an elevated highway will effectively improve traffic flow, making option B the implicit assumption.

7. Q7 · Percentage

   A shopkeeper marks up the price of an article by 40% above the cost price. He then offers a discount of 15% on the marked price. What is his overall profit percentage?

   • A. 19%
   • B. 21%
   • C. 25%
   • D. 17%
   Answer and solution

   Answer: A

   Let cost price = 100. Marked price = 140. After 15% discount, selling price = 140 × 0.85 = 119. Profit = 19, so profit % = 19%.

8. Q8 · Time and Work

   A can complete a piece of work in 15 days and B can complete the same work in 20 days. If they work together, in how many days will the work be completed?

   • A. 8 days
   • B. 8.57 days
   • C. 9 days
   • D. 10 days
   Answer and solution

   Answer: B

   A's one day work = 1/15 and B's one day work = 1/20. Together = 1/15 + 1/20 = 7/60. Time taken = 60/7 ≈ 8.57 days.

9. Q9 · Algebra

   If x + 1/x = 5, then what is the value of x³ + 1/x³?

   • A. 110
   • B. 115
   • C. 120
   • D. 125
   Answer and solution

   Answer: A

   Given x + 1/x = 5. We know x³ + 1/x³ = (x + 1/x)³ - 3(x + 1/x) = 5³ - 3(5) = 125 - 15 = 110.

10. Q10 · English Vocabulary

    Choose the word MOST OPPOSITE in meaning to 'CANDID':

    • A. Frank
    • B. Deceitful
    • C. Honest
    • D. Straightforward
    Answer and solution

    Answer: B

    Candid means open and honest. The opposite is deceitful (dishonest or misleading).