26. What type of lens is used to correct nearsightedness?
a) Convex
b) Concave
c) Cylindrical
d) Spherical
Answer: b) Concave
27. What is the SI unit of electric charge?
a) Coulomb
b) Ampere
c) Volt
d) Farad
Answer: a) Coulomb
28. Which of the following is a non-renewable energy source?
a) Solar
b) Wind
c) Coal
d) Hydroelectric
Answer: c) Coal
29. What is the term for materials that allow electricity to flow through them easily?
a) Insulators
b) Conductors
c) Semiconductors
d) Resistors
Answer: b) Conductors
30. What does E=mc^2 represent?
a) The energy of a photon
b) The mass-energy equivalence
c) The force of gravity
d) The speed of light
Answer: b) The mass-energy equivalence
General science GK
31. What is the principle behind hydraulic systems?
a) Archimedes' Principle
b) Pascal's Principle
c) Bernoulli's Principle
d) Boyle's Law
Answer: b) Pascal's Principle
32. What is the term for the amount of matter in an object?
a) Weight
b) Mass
c) Volume
d) Density
Answer: b) Mass
33. Which of the following waves is part of the electromagnetic spectrum?
a) Sound waves
b) Water waves
c) Radio waves
d) Seismic waves
Answer: c) Radio waves
34. What is the term for a material that does not allow electricity to flow through it?
a) Conductor
b) Semiconductor
c) Insulator
d) Resistor
Answer: c) Insulator
35. Which of the following planets has the strongest gravity?
a) Earth
b) Mars
c) Jupiter
d) Venus
Answer: c) Jupiter
36. What is the name of the force that causes objects to fall to the ground?
a) Electromagnetic Force
b) Centripetal Force
c) Gravitational Force
d) Frictional Force
Answer: c) Gravitational Force
37. What is the name of the process where plants convert sunlight into chemical energy?
a) Respiration
b) Photosynthesis
c) Transpiration
d) Fermentation
Answer: b) Photosynthesis
38. What does a voltmeter measure?
a) Electric current
b) Electric voltage
c) Electric resistance
d) Electric power
Answer: b) Electric voltage
39. What is the principle behind the operation of a lever?
a) Conservation of momentum
b) Pascal's Principle
c) Conservation of energy
d) Mechanical advantage
Answer: d) Mechanical advantage
40. Which of the following is not an SI base unit?
a) Meter
b) Second
c) Kilogram
d) Liter
Answer: d) Liter
41. What is the term for the highest point of a wave?
a) Crest
b) Trough
c) Wavelength
d) Amplitude
Answer: a) Crest
42. What does the pH scale measure?
a) Temperature
b) Pressure
c) Acidity or alkalinity
d) Concentration of solutes
Answer: c) Acidity or alkalinity
43. What is the name of the instrument used to measure electric power?
a) Ammeter
b) Voltmeter
c) Wattmeter
d) Ohmmeter
Answer: c) Wattmeter
44. What type of energy is stored in a stretched spring?
a) Kinetic energy
b) Thermal energy
c) Potential energy
d) Chemical energy
Answer: c) Potential energy
45. What is the formula for calculating work done?
a) Work = Force × Distance
b) Work = Mass × Acceleration
c) Work = Power × Time
d) Work = Velocity × Time
Answer: a) Work = Force × Distance
46. Which of the following elements is a good conductor of electricity?
a) Rubber
b) Copper
c) Glass
d) Wood
Answer: b) Copper
47. What does a hygrometer measure?
a) Temperature
b) Humidity
c) Pressure
d) Wind speed
Answer: b) Humidity
48. What is the term for the change of state from gas to liquid?
a) Melting
b) Freezing
c) Condensation
d) Sublimation
Answer: c) Condensation
49. What is the source of the Sun’s energy?
a) Chemical reactions
b) Nuclear fusion
c) Nuclear fission
d) Gravitational collapse
Answer: b) Nuclear fusion
50. What is the phenomenon of bending of waves around obstacles?
a) Reflection
b) Refraction
c) Diffraction
d) Interference
Answer: c) Diffraction
General science GK
Important Topics:
Quiz:
Sorry for the typing. I hope you will correct me in the comment box.