Home Subjects TNPSC (Tamil Nadu) Reasoning & Aptitude

TNPSC (Tamil Nadu)
Reasoning & Aptitude

Tamil Nadu Public Service Commission

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Topics in TNPSC (Tamil Nadu)
Which Tamil Nadu chief minister served the longest tenure in the state's history?
A C.N. Annadurai
B M. Karunanidhi
C K. Kamaraj
D M.G. Ramachandran
Correct Answer:  B. M. Karunanidhi
EXPLANATION

M. Karunanidhi served as Chief Minister for approximately 18 years across multiple terms, the longest in Tamil Nadu history.

Test
What is the current literacy rate of Tamil Nadu as per the 2021 Census?
A 72.3%
B 78.3%
C 80.3%
D 82.1%
Correct Answer:  C. 80.3%
EXPLANATION

Tamil Nadu has a literacy rate of 80.3% according to the 2021 Census, one of the highest in India.

Test
Which ancient Tamil sangam (literary assembly) period saw the compilation of the Sangam literature?
A 1st to 3rd century CE
B 5th to 7th century CE
C 8th to 10th century CE
D 11th to 13th century CE
Correct Answer:  A. 1st to 3rd century CE
EXPLANATION

The Sangam literature, including works like Ettutogai and Pattupattu, was compiled during the 1st to 3rd century CE.

Test
A man walks 8 km east, then 6 km north. What is the straight-line distance from his starting point?
A 10 km
B 12 km
C 14 km
D 15 km
Correct Answer:  A. 10 km
EXPLANATION

Using Pythagoras theorem: Distance = √(8² + 6²) = √(64 + 36) = √100 = 10 km

Test
Which Tamil Nadu district produces the maximum amount of spices, earning it the nickname 'Spice Garden of India'?
A Nilgiris
B Idukki
C Cumbum Valley region
D Theni
Correct Answer:  A. Nilgiris
EXPLANATION

The Nilgiris district, with its favorable climate, produces large quantities of spices including cardamom, cinnamon, and pepper.

Test
If APPLE is coded as 1-16-16-12-5, and ORANGE is coded as 15-18-1-14-7-5, what is the coding system?
A Position of letters in alphabet
B Reverse position in alphabet
C Random assignment
D Position multiplied by 2
Correct Answer:  A. Position of letters in alphabet
EXPLANATION

A=1, P=16, L=12, E=5 (positions in alphabet). O=15, R=18, A=1, N=14, G=7, E=5.

Test
Which of the following compounds contains 6 electrons? (Atomic numbers: H=1, C=6, N=7, O=8)
A CH₄
B H₂O
C C
D NH₃
Correct Answer:  C. C
EXPLANATION

Carbon atom has 6 electrons. CH₄ has 10 electrons (6+4), H₂O has 10 electrons (8+2), NH₃ has 10 electrons (7+3).

Test
The literacy rate of Tamil Nadu as per the 2021 census data is approximately:
A 70%
B 75%
C 80%
D 85%
Correct Answer:  B. 75%
EXPLANATION

Tamil Nadu has a literacy rate of approximately 75-80%, making it one of the most literate states in India, above the national average.

Test
Which of the following is NOT a traditional Tamil art form?
A Kathakali
B Bharatanatyam
C Karakattam
D Theyyam
Correct Answer:  A. Kathakali
EXPLANATION

Kathakali is a traditional art form of Kerala, not Tamil Nadu. Bharatanatyam, Karakattam, and Theyyam are Tamil traditional art forms.

Test
A shopkeeper buys 100 pens at ₹5 each and sells them at ₹8 each. What is his profit percentage?
A 40%
B 50%
C 60%
D 70%
Correct Answer:  C. 60%
EXPLANATION

Cost Price = ₹500. Selling Price = ₹800. Profit = ₹300. Profit % = (300/500) × 100 = 60%

Test
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