General Science - MCQ Practice Questions
Practice free General Science multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.
207 questions | 100% Free
The first law of thermodynamics relates to which principle?
A transformer has a primary coil with 500 turns and secondary coil with 100 turns. If the primary voltage is 220V, what is the secondary voltage?
Which of the following pairs correctly represents the SI units of momentum and impulse respectively?
A body moving in a circular path with constant speed possesses which type of acceleration?
Two bodies of masses 2 kg and 3 kg are dropped from the same height in vacuum. Which statement is correct?
The SI unit of pressure is Pascal (Pa). How is it related to other SI units?
A ball is thrown upward with initial velocity 20 m/s. Taking g = 10 m/s², what is the maximum height reached?
Which of the following exhibits wave-particle duality?
A gas expands against a constant external pressure of 2 atm. The work done by the gas is -500 J. What is the change in volume?
The coefficient of linear expansion of a metal is 1.2 × 10⁻⁵ °C⁻¹. If a 1 m rod is heated from 0°C to 100°C, what is the increase in length?
A convex lens of focal length 15 cm forms an image at distance 30 cm from the lens. What is the object distance?
Which statement about entropy is correct according to the Second Law of Thermodynamics?
A wire of length L and cross-sectional area A has resistance R. If the wire is cut into two equal halves and connected in parallel, what is the new resistance?
A concave mirror has a focal length of 20 cm. An object is placed at 40 cm from the mirror. What type of image is formed?
Which of the following has the highest specific heat capacity among common substances?
A 10 m long ladder leans against a vertical wall at 60° to the ground. How high does it reach on the wall?
Which phenomenon explains why stars twinkle but planets do not?
A radioactive element has a half-life of 10 years. What fraction of the original sample remains after 30 years?
An object undergoes simple harmonic motion with amplitude 5 cm and frequency 2 Hz. What is the maximum velocity?
A submarine sonar uses ultrasound with frequency 50 kHz and speed 1500 m/s in water. What is the wavelength?