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 phenomenon where a material exhibits permanent magnetic properties is called:
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?
A 10 m long ladder leans against a vertical wall at 60° to the ground. How high does it reach on the wall?
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?
A conducting sphere is given a charge of 8 μC. What is the electric field at its surface if the radius is 2 cm?
Two identical objects moving with velocities v and 2v collide and stick together. What fraction of kinetic energy is lost?
A block slides down a frictionless incline of angle 30°. What is its acceleration down the incline?
A spring with spring constant k = 100 N/m is compressed by 0.1 m. What is the elastic potential energy stored?
Which phenomenon occurs when sound waves bend around obstacles?
A light ray travels from air (n=1) into glass (n=1.5) at an incident angle of 30°. What is the refraction angle?
Two resistors of 4Ω and 6Ω are connected in series with a 10V battery. What is the total current?
Which of the following is a non-ohmic conductor?