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TNPSC Group 4 / VAO UNIT-I General Science HARD – Practice Quiz 2026

his TNPSC Group 4 / VAO General Science Mock Test is designed to help candidates prepare effectively for competitive exams. The questions are based on the latest syllabus and exam pattern followed by TNPSC and other Tamil Nadu government recruitment exams.

Instructions:

  • Total Duration: 15 Minutes
  • All questions are multiple-choice questions (MCQs)
  • Each question carries equal marks
  • There is no negative marking
  • Choose the most appropriate answer from the given options
  • Do not refresh or exit the test during the exam
  • Review your answers before submitting

Syllabus Covered:

  • Physics: Laws of motion, force, energy, light, sound, electricity
  • Chemistry: Elements, compounds, chemical reactions, acids and bases
  • Biology: Human body systems, plants, animals, nutrition, diseases
  • Environmental Science: Ecology, pollution, climate change, conservation
  • General Scientific Knowledge: Inventions, discoveries, scientists, everyday science

This mock test will improve your speed, accuracy, and confidence for the final examination.

Questions

25

Duration

15m

Marks

100

Question Preview

5 of 25

1 What is the tilt of Uranus's rotational axis?

A. 23.5°
B. 45°
C. 98°
D. 180°

2 What is the diameter of the Milky Way galaxy in light-years?

A. 50,000 light-years
B. 100,000 light-years
C. 200,000 light-years
D. 500,000 light-years

3 The carbon content in steel ranges from:

A. 0.002% to 2.1%
B. 2% to 5%
C. 5% to 10%
D. 10% to 15%

4 What is the escape velocity from Earth's surface?

A. 9.8 km/s
B. 11.2 km/s
C. 15.5 km/s
D. 7.9 km/s

5 What is the Chandrasekhar limit?

A. 1.4 solar masses
B. 2.5 solar masses
C. 0.8 solar masses
D. 3.2 solar masses