General Science - MCQ Practice Questions

A convex lens of focal length 20 cm is used as a magnifying glass. If an object is placed 5 cm from the lens, what is the nature of the image?

Which quantum number determines the shape of an orbital?

A wire of resistance R is stretched to double its length. What is the new resistance?

Which phenomenon causes the sky to appear blue during daytime?

A charged particle moves in a magnetic field. Under what condition does it move in a straight line?

Which of the following is NOT a vector quantity?

Which law states that the force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them?

What is the atomic mass unit (amu) equivalent to in kg?

A body falls freely from rest. What is its velocity after 2 seconds? (g = 10 m/s²)

The process by which plants prepare their food using sunlight is known as:

What is the pH of pure water at 25°C?

A car moving at 72 km/h applies brakes and comes to rest in 8 seconds. What is the deceleration?

Which of the following elements has an electronic configuration of 2, 8, 7?

The refractive index of a medium is 1.5. What is the speed of light in that medium? (c = 3 × 10⁸ m/s)

A spring with spring constant k = 100 N/m is compressed by 0.2 m. What is the elastic potential energy stored?

Which hormone is responsible for regulating blood glucose levels?

A 5 kg object is lifted vertically at constant velocity. What is the work done by gravity? (Height = 10 m, g = 10 m/s²)

What is the equivalent resistance when three resistors of 6Ω, 3Ω, and 2Ω are connected in parallel?

The phenomenon where a material exhibits permanent magnetic properties is called:

A projectile is launched at an angle of 45° with initial velocity 20 m/s. What is the maximum height reached? (g = 10 m/s²)