100 General Science MCQs For Competetive Tests

100 General Science MCQs: Medicine and Medical Technology:

51. What medical imaging technique uses strong magnetic fields and radio waves to produce detailed images of the body’s interior?

    a) X-ray

    b) MRI (Magnetic Resonance Imaging)

    c) CT scan

    d) Ultrasound

52. What is the common term for hypertension?

    a) High blood sugar

    b) High cholesterol

    c) High blood pressure

    d) High heart rate

53. What is the process of purifying the blood artificially using a machine?

    a) Dialysis

    b) Transfusion

    c) Electrolysis

    d) Chemotherapy

54. Which hormone regulates blood sugar levels?

    a) Insulin

    b) Thyroxine

    c) Estrogen

    d) Testosterone

55. What is the medical term for inflammation of the appendix?

    a) Appendicitis

    b) Arthritis

    c) Tonsillitis

    d) Bronchitis

100 General Science MCQs: Nutrition and Diet:

56. What is the primary function of carbohydrates in the body?

    a) Provide energy

    b) Build muscles

    c) Transport oxygen

    d) Regulate hormones

57. Which vitamin is primarily obtained through exposure to sunlight?

    a) Vitamin A

    b) Vitamin C

    c) Vitamin D

    d) Vitamin K

58. Which nutrient is necessary for the formation and maintenance of healthy bones and teeth?

    a) Protein

    b) Fiber

    c) Calcium

    d) Iron

59. What is the main function of dietary fiber?

    a) Provide energy

    b) Regulate blood sugar

    c) Aid in digestion

    d) Build muscles

60. Which macronutrient is the body’s primary source of energy during periods of rest and low-intensity activities?

    a) Carbohydrates

    b) Proteins

    c) Fats

    d) Vitamins

100 General Science MCQs: Geology and Earth Science:

61. What is the process by which rocks are broken down into smaller particles?

    a) Erosion

    b) Weathering

    c) Subduction

    d) Volcanism

62. Which layer of the Earth’s interior is primarily composed of molten rock?

    a) Crust

    b) Mantle

    c) Outer core

    d) Inner core

63. What is the name for a sudden release of energy in the Earth’s crust that results in seismic waves?

    a) Volcanic eruption

    b) Hurricane

    c) Earthquake

    d) Tsunami

64. How are minerals and rocks dated using the decay of radioactive isotopes?

    a) Absolute dating

    b) Relative dating

    c) Fossil dating

    d) Stratigraphic dating

65. What type of rock forms from the cooling and solidification of molten magma?

    a) Sedimentary rock

    b) Igneous rock

    c) Metamorphic rock

    d) Fossilized rock

100 General Science MCQs: Space and Astronomy:

66. Which planet is known as the “Red Planet”?

    a) Venus

    b) Mars

    c) Jupiter

    d) Saturn

67. What is the largest moon in our solar system, orbiting Jupiter?

    a) Titan

    b) Ganymede

    c) Europa

    d) Io

68. What is a collection of stars, gas, dust, and other celestial bodies bound together by gravity?

    a) Planet

    b) Comet

    c) Galaxy

    d) Nebula

69. What is the process by which a star exhausts its nuclear fuel and collapses under its own gravity?

    a) Fusion

    b) Supernova

    c) Black hole formation

    d) Nebula formation

70. What is the name of the spacecraft launched by NASA to study the outer planets and interstellar space?

    a) Voyager

    b) Hubble

    c) Curiosity

    d) Cassini

100 General Science MCQs: Technology and Engineering:

71. What is the basic unit of information in computing?

    a) Bit

    b) Byte

    c) Megabyte

    d) Kilobyte

72. Which component of a computer is responsible for performing arithmetic and logical operations?

    a) Central Processing Unit (CPU)

    b) Random Access Memory (RAM)

    c) Graphics Processing Unit (GPU)

    d) Hard Disk Drive (HDD)

73. What does GPS stand for?

    a) General Positioning System

    b) Global Positioning System

    c) General Positioning Satellite

    d) Global Positioning Satellite

74. Which technology uses electromagnetic waves to transmit information for communication?

    a) GPS

    b) Wi-Fi

    c) Bluetooth

    d) USB

75. What type of energy is produced from the splitting of atoms in a process called nuclear fission?

    a) Solar energy

    b) Wind energy

    c) Geothermal energy

    d) Nuclear energy