{"id":17647,"date":"2025-11-08T10:24:45","date_gmt":"2025-11-08T10:24:45","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=17647"},"modified":"2025-11-10T05:00:13","modified_gmt":"2025-11-10T05:00:13","slug":"scientific-instruments-top-100-mcqs-with-answer-and-explanation-2","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/11\/08\/scientific-instruments-top-100-mcqs-with-answer-and-explanation-2\/","title":{"rendered":"Scientific Instruments Top 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n

1. The instrument used to measure temperature is<\/mark><\/strong>
A) Thermometer
B) Barometer
C) Hygrometer
D) Voltmeter
Answer:<\/strong> A) Thermometer
Explanation:<\/strong> A thermometer measures the degree of hotness or coldness of a body.<\/p>\n\n\n\n

2. The instrument used to measure atmospheric pressure is<\/mark><\/strong>
A) Barometer
B) Thermometer
C) Altimeter
D) Anemometer
Answer:<\/strong> A) Barometer<\/p>\n\n\n\n

3. The instrument used to measure humidity in air is<\/mark><\/strong>
A) Hygrometer
B) Barometer
C) Thermometer
D) Hydrometer
Answer:<\/strong> A) Hygrometer<\/p>\n\n\n\n

4. The instrument used to measure the speed of wind is<\/mark><\/strong>
A) Anemometer
B) Barometer
C) Altimeter
D) Odometer
Answer:<\/strong> A) Anemometer<\/p>\n\n\n\n

5. The instrument used to measure the height above sea level is<\/mark><\/strong>
A) Altimeter
B) Barometer
C) Hydrometer
D) Speedometer
Answer:<\/strong> A) Altimeter<\/p>\n\n\n\n

6. The instrument used to measure the depth of the ocean is<\/mark><\/strong>
A) Fathometer
B) Hydrometer
C) Barometer
D) Manometer
Answer:<\/strong> A) Fathometer
Explanation:<\/strong> A fathometer works on the echo-sounding principle to measure sea depth.<\/p>\n\n\n\n

7. The instrument used to measure electric current is<\/mark><\/strong>
A) Ammeter
B) Voltmeter
C) Ohmmeter
D) Galvanometer
Answer:<\/strong> A) Ammeter<\/p>\n\n\n\n

8. The instrument used to measure electric potential difference is<\/mark><\/strong>
A) Voltmeter
B) Ammeter
C) Galvanometer
D) Wattmeter
Answer:<\/strong> A) Voltmeter<\/p>\n\n\n\n

9. The instrument used to measure electrical resistance is<\/mark><\/strong>
A) Ohmmeter
B) Ammeter
C) Voltmeter
D) Galvanometer
Answer:<\/strong> A) Ohmmeter<\/p>\n\n\n\n

10. The instrument used to detect the presence of electric current is<\/mark><\/strong>
A) Galvanometer
B) Ammeter
C) Voltmeter
D) Wattmeter
Answer:<\/strong> A) Galvanometer<\/p>\n\n\n\n

11. The instrument used to measure electric power is<\/mark><\/strong>
A) Wattmeter
B) Ammeter
C) Voltmeter
D) Ohmmeter
Answer:<\/strong> A) Wattmeter<\/p>\n\n\n\n

12. The instrument used to measure electric energy consumption is<\/mark><\/strong>
A) Energy meter
B) Voltmeter
C) Ammeter
D) Ohmmeter
Answer:<\/strong> A) Energy meter<\/p>\n\n\n\n

13. The instrument used to measure the intensity of light is<\/mark><\/strong>
A) Photometer
B) Spectrometer
C) Colorimeter
D) Telescope
Answer:<\/strong> A) Photometer<\/p>\n\n\n\n

14. The instrument used to study the spectrum of light is<\/mark><\/strong>
A) Spectrometer
B) Microscope
C) Telescope
D) Photometer
Answer:<\/strong> A) Spectrometer<\/p>\n\n\n\n

15. The instrument used to measure sound intensity is<\/mark><\/strong>
A) Sound level meter
B) Audiometer
C) Barometer
D) Microphone
Answer:<\/strong> A) Sound level meter<\/p>\n\n\n\n

16. The instrument used to test hearing ability is<\/mark><\/strong>
A) Audiometer
B) Sound level meter
C) Microphone
D) Stethoscope
Answer:<\/strong> A) Audiometer<\/p>\n\n\n\n

17. The instrument used by doctors to hear heartbeats is<\/mark><\/strong>
A) Stethoscope
B) Endoscope
C) Thermometer
D) Barometer
Answer:<\/strong> A) Stethoscope<\/p>\n\n\n\n

18. The instrument used to examine internal organs of the body is<\/mark><\/strong>
A) Endoscope
B) Microscope
C) Telescope
D) Periscope
Answer:<\/strong> A) Endoscope<\/p>\n\n\n\n

19. The instrument used to view distant objects is<\/mark><\/strong>
A) Telescope
B) Microscope
C) Periscope
D) Endoscope
Answer:<\/strong> A) Telescope<\/p>\n\n\n\n

20. The instrument used to see tiny objects is<\/mark><\/strong>
A) Microscope
B) Telescope
C) Periscope
D) Binocular
Answer:<\/strong> A) Microscope<\/p>\n\n\n\n

21. The instrument used to observe objects under water or from submarines is<\/mark><\/strong>
A) Periscope
B) Microscope
C) Telescope
D) Endoscope
Answer:<\/strong> A) Periscope<\/p>\n\n\n\n

22. The instrument used to measure the density of liquids is<\/mark><\/strong>
A) Hydrometer
B) Hygrometer
C) Barometer
D) Manometer
Answer:<\/strong> A) Hydrometer<\/p>\n\n\n\n

23. The instrument used to measure pressure of gases or liquids is<\/mark><\/strong>
A) Manometer
B) Barometer
C) Hydrometer
D) Anemometer
Answer:<\/strong> A) Manometer<\/p>\n\n\n\n

24. The instrument used to measure the speed of a moving vehicle is<\/mark><\/strong>
A) Speedometer
B) Odometer
C) Tachometer
D) Barometer
Answer:<\/strong> A) Speedometer<\/p>\n\n\n\n

25. The instrument used to measure the distance traveled by a vehicle is<\/mark><\/strong>
A) Odometer
B) Speedometer
C) Tachometer
D) Chronometer
Answer:<\/strong> A) Odometer<\/p>\n\n\n\n

26. The instrument used to measure the rotation speed of a machine is<\/mark><\/strong>
A) Tachometer
B) Barometer
C) Hydrometer
D) Altimeter
Answer:<\/strong> A) Tachometer<\/p>\n\n\n\n

27. The instrument used to measure time very accurately is<\/mark><\/strong>
A) Chronometer
B) Stopwatch
C) Pendulum
D) Hourglass
Answer:<\/strong> A) Chronometer<\/p>\n\n\n\n

28. The instrument used to record earthquakes is<\/mark><\/strong>
A) Seismograph
B) Barometer
C) Manometer
D) Thermograph
Answer:<\/strong> A) Seismograph<\/p>\n\n\n\n

29. The instrument used to measure rainfall is<\/mark><\/strong>
A) Rain gauge
B) Barometer
C) Thermometer
D) Hygrometer
Answer:<\/strong> A) Rain gauge<\/p>\n\n\n\n

30. The instrument used to measure sunshine duration is<\/mark><\/strong>
A) Sunshine recorder
B) Barometer
C) Thermometer
D) Photometer
Answer:<\/strong> A) Sunshine recorder<\/p>\n\n\n\n

31. The instrument used to measure electric charge is<\/mark><\/strong>
A) Electroscope
B) Ammeter
C) Voltmeter
D) Ohmmeter
Answer:<\/strong> A) Electroscope<\/p>\n\n\n\n

32. The instrument used to detect small currents is<\/mark><\/strong>
A) Galvanometer
B) Ammeter
C) Voltmeter
D) Ohmmeter
Answer:<\/strong> A) Galvanometer<\/p>\n\n\n\n

33. The instrument used to detect radio waves is<\/mark><\/strong>
A) Antenna
B) Oscilloscope
C) Galvanometer
D) Spectrometer
Answer:<\/strong> A) Antenna<\/p>\n\n\n\n

34. The instrument used to observe waveforms of electrical signals is<\/mark><\/strong>
A) Oscilloscope
B) Voltmeter
C) Ammeter
D) Galvanometer
Answer:<\/strong> A) Oscilloscope<\/p>\n\n\n\n

35. The instrument used to measure blood pressure is<\/mark><\/strong>
A) Sphygmomanometer
B) Barometer
C) Hydrometer
D) Thermometer
Answer:<\/strong> A) Sphygmomanometer<\/p>\n\n\n\n

36. The instrument used to measure relative density of milk is<\/mark><\/strong>
A) Lactometer
B) Hydrometer
C) Barometer
D) Thermometer
Answer:<\/strong> A) Lactometer<\/p>\n\n\n\n

37. The instrument used to determine purity of milk is<\/mark><\/strong>
A) Lactometer
B) Barometer
C) Anemometer
D) Hygrometer
Answer:<\/strong> A) Lactometer<\/p>\n\n\n\n

38. The instrument used to record temperature changes continuously is<\/mark><\/strong>
A) Thermograph
B) Thermometer
C) Barograph
D) Manometer
Answer:<\/strong> A) Thermograph<\/p>\n\n\n\n

39. The instrument used to record atmospheric pressure continuously is<\/mark><\/strong>
A) Barograph
B) Barometer
C) Thermograph
D) Hygrometer
Answer:<\/strong> A) Barograph<\/p>\n\n\n\n

40. The instrument used to measure optical density of a solution is<\/mark><\/strong>
A) Colorimeter
B) Photometer
C) Spectrometer
D) Microscope
Answer:<\/strong> A) Colorimeter<\/p>\n\n\n\n

41. The instrument used to measure the intensity of earthquakes is<\/mark><\/strong>
A) Seismograph
B) Barometer
C) Hydrometer
D) Thermograph
Answer:<\/strong> A) Seismograph
Explanation:<\/strong> A seismograph records the vibrations of the ground during an earthquake and measures its intensity.<\/p>\n\n\n\n

42. The instrument used to detect the presence of electric charge is<\/mark><\/strong>
A) Gold-leaf electroscope
B) Ammeter
C) Voltmeter
D) Wattmeter
Answer:<\/strong> A) Gold-leaf electroscope
Explanation:<\/strong> When charged, its gold leaves diverge \u2014 indicating the presence of static electricity.<\/p>\n\n\n\n

43. The instrument used to measure radioactivity is<\/mark><\/strong>
A) Geiger-M\u00fcller counter
B) Photometer
C) Barometer
D) Microscope
Answer:<\/strong> A) Geiger-M\u00fcller counter
Explanation:<\/strong> It detects and counts ionizing radiations like alpha, beta, and gamma rays.<\/p>\n\n\n\n

44. The instrument used to measure optical rotation is<\/mark><\/strong>
A) Polarimeter
B) Spectrometer
C) Microscope
D) Photometer
Answer:<\/strong> A) Polarimeter
Explanation:<\/strong> A polarimeter is used to study the rotation of plane-polarized light through optically active substances.<\/p>\n\n\n\n

45. The instrument used to split light into its component colors is<\/mark><\/strong>
A) Prism or Spectroscope
B) Microscope
C) Periscope
D) Photometer
Answer:<\/strong> A) Prism or Spectroscope
Explanation:<\/strong> A spectroscope separates light into its spectrum to study wavelength composition.<\/p>\n\n\n\n

46. The instrument used to record the direction and speed of wind is<\/mark><\/strong>
A) Anemograph
B) Barograph
C) Altimeter
D) Wind vane
Answer:<\/strong> A) Anemograph
Explanation:<\/strong> An anemograph continuously records wind speed and direction on a chart.<\/p>\n\n\n\n

47. The instrument used to measure angles of elevation and depression is<\/strong>
<\/mark>A) Theodolite
B) Sextant
C) Clinometer
D) Periscope
Answer:<\/strong> A) Theodolite
Explanation:<\/strong> Used in surveying to measure both horizontal and vertical angles.<\/p>\n\n\n\n

48. The instrument used by sailors to measure the altitude of the sun and stars is<\/mark><\/strong>
A) Sextant
B) Telescope
C) Barometer
D) Compass
Answer:<\/strong> A) Sextant
Explanation:<\/strong> It measures the angle between celestial objects and the horizon for navigation.<\/p>\n\n\n\n

49. The instrument used to determine the purity and composition of substances by light is<\/mark><\/strong>
A) Spectrophotometer
B) Photometer
C) Colorimeter
D) Microscope
Answer:<\/strong> A) Spectrophotometer
Explanation:<\/strong> It measures light absorbed by a solution at different wavelengths.<\/p>\n\n\n\n

50. The instrument used to view very distant stars and galaxies is<\/mark><\/strong>
A) Telescope
B) Microscope
C) Periscope
D) Endoscope
Answer:<\/strong> A) Telescope
Explanation:<\/strong> A telescope gathers light and magnifies distant celestial objects.<\/p>\n\n\n\n

51. The instrument used to view two-dimensional images of internal body parts is<\/mark><\/strong>
A) X-ray machine
B) Telescope
C) Periscope
D) Endoscope
Answer:<\/strong> A) X-ray machine
Explanation:<\/strong> X-rays penetrate soft tissues and are absorbed by bones to produce images.<\/p>\n\n\n\n

52. The instrument used to measure radiation exposure is<\/mark><\/strong>
A) Dosimeter
B) Barometer
C) Thermometer
D) Galvanometer
Answer:<\/strong> A) Dosimeter
Explanation:<\/strong> Used by radiologists and nuclear scientists to monitor radiation dosage.<\/p>\n\n\n\n

53. The instrument used to measure the salinity of seawater is<\/mark><\/strong>
A) Salinometer
B) Hydrometer
C) Hygrometer
D) Barometer
Answer:<\/strong> A) Salinometer
Explanation:<\/strong> It determines the concentration of salts dissolved in water.<\/p>\n\n\n\n

54. The instrument used to measure the refractive index of liquids is<\/mark><\/strong>
A) Refractometer
B) Polarimeter
C) Spectrometer
D) Photometer
Answer:<\/strong> A) Refractometer
Explanation:<\/strong> It measures how much light bends when it passes through a liquid.<\/p>\n\n\n\n

55. The instrument used to measure atmospheric humidity is<\/mark><\/strong>
A) Hygrometer
B) Barometer
C) Hydrometer
D) Manometer
Answer:<\/strong> A) Hygrometer<\/p>\n\n\n\n

56. The instrument used to observe blood cells and bacteria is<\/mark><\/strong>
A) Microscope
B) Telescope
C) Periscope
D) Camera
Answer:<\/strong> A) Microscope
Explanation:<\/strong> It magnifies small objects that cannot be seen by the naked eye.<\/p>\n\n\n\n

57. The instrument used to observe atomic structure is<\/mark><\/strong>
A) Electron microscope
B) Compound microscope
C) Simple microscope
D) Telescope
Answer:<\/strong> A) Electron microscope
Explanation:<\/strong> It uses electrons instead of light to give very high magnification and resolution.<\/p>\n\n\n\n

58. The instrument used to measure light intensity in photosynthesis studies is<\/mark><\/strong>
A) Lux meter
B) Photometer
C) Spectrometer
D) Calorimeter
Answer:<\/strong> A) Lux meter
Explanation:<\/strong> Lux meters measure light levels in environments, often used in plant and lab research.<\/p>\n\n\n\n

59. The instrument used to measure heat radiation is<\/mark><\/strong>
A) Bolometer
B) Barometer
C) Hygrometer
D) Photometer
Answer:<\/strong> A) Bolometer
Explanation:<\/strong> It detects and measures infrared radiation by temperature change.<\/p>\n\n\n\n

60. The instrument used to measure atmospheric ozone concentration is<\/mark><\/strong>
A) Ozonoscope
B) Ozonizer
C) Barometer
D) Thermometer
Answer:<\/strong> A) Ozonoscope
Explanation:<\/strong> It helps detect and measure ozone levels in the atmosphere.<\/p>\n\n\n\n

61. The instrument used to detect and measure nuclear radiation is<\/mark><\/strong>
A) Geiger counter
B) Photometer
C) Voltmeter
D) Microscope
Answer:<\/strong> A) Geiger counter<\/p>\n\n\n\n

62. The instrument used to observe charged particles is<\/mark><\/strong>
A) Cloud chamber
B) Electron microscope
C) Voltmeter
D) Photometer
Answer:<\/strong> A) Cloud chamber
Explanation:<\/strong> It shows tracks of ionizing radiation through vapor condensation.<\/p>\n\n\n\n

63. The instrument used to detect magnetic fields is<\/strong>
A) Magnetometer
B) Galvanometer
C) Electroscope
D) Oscilloscope
Answer:<\/strong> A) Magnetometer
Explanation:<\/strong> It measures magnetic field strength and direction.<\/p>\n\n\n\n

64. The instrument used to measure small weights with precision is<\/mark><\/strong>
A) Analytical balance
B) Spring balance
C) Barometer
D) Odometer
Answer:<\/strong> A) Analytical balance<\/p>\n\n\n\n

65. The instrument used to measure the specific gravity of liquids is<\/mark><\/strong>
A) Hydrometer
B) Lactometer
C) Barometer
D) Manometer
Answer:<\/strong> A) Hydrometer<\/p>\n\n\n\n

66. The instrument used to detect metals in the ground is<\/mark><\/strong>
A) Metal detector
B) Magnetometer
C) Radar
D) Periscope
Answer:<\/strong> A) Metal detector
Explanation:<\/strong> It detects buried metallic objects using electromagnetic induction.<\/p>\n\n\n\n

67. The instrument used to measure radio frequencies is<\/mark><\/strong>
A) Frequency meter
B) Ammeter
C) Voltmeter
D) Galvanometer
Answer:<\/strong> A) Frequency meter<\/p>\n\n\n\n

68. The instrument used to measure alternating current frequency is<\/mark><\/strong>
A) Oscilloscope
B) Ammeter
C) Voltmeter
D) Potentiometer
Answer:<\/strong> A) Oscilloscope<\/p>\n\n\n\n

69. The instrument used to record heart activity is<\/mark><\/strong>
A) Electrocardiograph (ECG)
B) EEG
C) Stethoscope
D) Endoscope
Answer:<\/strong> A) Electrocardiograph (ECG)
Explanation:<\/strong> It records electrical signals of the heart.<\/p>\n\n\n\n

70. The instrument used to record brain activity is<\/mark><\/strong>
A) Electroencephalograph (EEG)
B) ECG
C) Endoscope
D) X-ray machine
Answer:<\/strong> A) EEG<\/p>\n\n\n\n

71. The instrument used to measure the purity of gold is<\/mark><\/strong>
A) Karat meter
B) Hydrometer
C) Refractometer
D) Polarimeter
Answer:<\/strong> A) Karat meter<\/p>\n\n\n\n

72. The instrument used to detect submarines under water is<\/mark><\/strong>
A) Sonar
B) Radar
C) Periscope
D) Telescope
Answer:<\/strong> A) Sonar
Explanation:<\/strong> SONAR uses sound waves to detect and locate underwater objects.<\/p>\n\n\n\n

73. The instrument used to detect aircraft or ships is<\/mark><\/strong>
A) Radar
B) Sonar
C) Telescope
D) Periscope
Answer:<\/strong> A) Radar
Explanation:<\/strong> RADAR uses radio waves for detecting and tracking distant objects.<\/p>\n\n\n\n

74. The instrument used to record images of distant celestial objects is<\/mark><\/strong>
A) Radio telescope
B) Microscope
C) Photometer
D) Periscope
Answer:<\/strong> A) Radio telescope<\/p>\n\n\n\n

75. The instrument used to detect heat leaks in buildings is<\/mark><\/strong>
A) Thermal imager
B) Barometer
C) Manometer
D) Seismograph
Answer:<\/strong> A) Thermal imager
Explanation:<\/strong> It captures infrared images showing areas of heat loss.<\/p>\n\n\n\n

76. The instrument used to measure luminous intensity is<\/mark><\/strong>
A) Photometer
B) Lux meter
C) Colorimeter
D) Spectrometer
Answer:<\/strong> A) Photometer<\/p>\n\n\n\n

77. The instrument used to measure the speed of light is<\/mark><\/strong>
A) Michelson interferometer
B) Spectrometer
C) Photometer
D) Telescope
Answer:<\/strong> A) Michelson interferometer<\/p>\n\n\n\n

78. The instrument used to produce very high magnetic fields is<\/mark><\/strong>
A) Cyclotron
B) Barometer
C) Anemometer
D) Odometer
Answer:<\/strong> A) Cyclotron
Explanation:<\/strong> It accelerates charged particles using electric and magnetic fields.<\/p>\n\n\n\n

79. The instrument used to detect invisible radiation is<\/mark><\/strong>
A) Photographic plate
B) Telescope
C) Microscope
D) Hygrometer
Answer:<\/strong> A) Photographic plate<\/p>\n\n\n\n

80. The instrument used to count blood cells is<\/mark><\/strong>
A) Hemocytometer
B) Microscope
C) Spectrometer
D) Colorimeter
Answer:<\/strong> A) Hemocytometer<\/p>\n\n\n\n

81. The instrument used to measure blood sugar is<\/mark><\/strong>
A) Glucometer
B) Lactometer
C) Hydrometer
D) Barometer
Answer:<\/strong> A) Glucometer<\/p>\n\n\n\n

82. The instrument used to measure blood oxygen level is<\/mark><\/strong>
A) Oximeter
B) Barometer
C) Sphygmomanometer
D) Thermometer
Answer:<\/strong> A) Oximeter<\/p>\n\n\n\n

83. The instrument used to measure blood clotting time is<\/mark><\/strong>
A) Coagulometer
B) Colorimeter
C) Lactometer
D) Hydrometer
Answer:<\/strong> A) Coagulometer<\/p>\n\n\n\n

84. The instrument used to measure the force of wind is<\/mark><\/strong>
A) Anemometer
B) Barometer
C) Thermometer
D) Speedometer
Answer:<\/strong> A) Anemometer<\/p>\n\n\n\n

85. The instrument used to measure altitude of aircraft is<\/mark><\/strong>
A) Altimeter
B) Odometer
C) Tachometer
D) Barometer
Answer:<\/strong> A) Altimeter<\/p>\n\n\n\n

86. The instrument used to record time intervals accurately is<\/mark><\/strong>
A) Stopwatch
B) Chronometer
C) Pendulum
D) Odometer
Answer:<\/strong> A) Stopwatch<\/p>\n\n\n\n

87. The instrument used to measure salinity in soil is<\/mark><\/strong>
A) Soil salinometer
B) Hydrometer
C) Barometer
D) Anemometer
Answer:<\/strong> A) Soil salinometer<\/p>\n\n\n\n

88. The instrument used to measure gravitational acceleration is<\/mark><\/strong>
A) Gravimeter
B) Galvanometer
C) Barometer
D) Voltmeter
Answer:<\/strong> A) Gravimeter<\/p>\n\n\n\n

89. The instrument used to measure humidity and temperature together is<\/mark><\/strong>
A) Psychrometer
B) Hydrometer
C) Manometer
D) Thermometer
Answer:<\/strong> A) Psychrometer<\/p>\n\n\n\n

90. The instrument used to detect small changes in magnetic fields is<\/mark><\/strong>
A) Fluxmeter
B) Voltmeter
C) Barometer
D) Ammeter
Answer:<\/strong> A) Fluxmeter<\/p>\n\n\n\n

91. The instrument used to measure very high temperatures is<\/mark><\/strong>
A) Pyrometer
B) Thermometer
C) Calorimeter
D) Barometer
Answer:<\/strong> A) Pyrometer<\/p>\n\n\n\n

92. The instrument used to measure heat capacity is<\/mark><\/strong>
A) Calorimeter
B) Thermometer
C) Barometer
D) Hygrometer
Answer:<\/strong> A) Calorimeter<\/p>\n\n\n\n

93. The instrument used to measure radioactivity in air is<\/mark><\/strong>
A) Ionization chamber
B) Photometer
C) Microscope
D) Barometer
Answer:<\/strong> A) Ionization chamber<\/p>\n\n\n\n

94. The instrument used to detect infrared radiation is<\/mark><\/strong>
A) Thermopile
B) Barometer
C) Photometer
D) Voltmeter
Answer:<\/strong> A) Thermopile<\/p>\n\n\n\n

95. The instrument used to study atomic nuclei is<\/mark><\/strong>
A) Cyclotron
B) Electron microscope
C) Spectrometer
D) Photometer
Answer:<\/strong> A) Cyclotron<\/p>\n\n\n\n

96. The instrument used to detect earthquakes under the sea is<\/mark><\/strong>
A) Hydrophone
B) Seismograph
C) Sonar
D) Radar
Answer:<\/strong> A) Hydrophone<\/p>\n\n\n\n

97. The instrument used to record atmospheric electricity is<\/mark><\/strong>
A) Electrometer
B) Barometer
C) Hygrometer
D) Ammeter
Answer:<\/strong> A) Electrometer<\/p>\n\n\n\n

98. The instrument used to locate underground minerals is<\/mark><\/strong>
A) Magnetometer
B) Radar
C) Thermometer
D) Barometer
Answer:<\/strong> A) Magnetometer<\/p>\n\n\n\n

99. The instrument used to record variations in current over time is<\/mark><\/strong>
A) Oscillograph
B) Ammeter
C) Voltmeter
D) Ohmmeter
Answer:<\/strong> A) Oscillograph<\/p>\n\n\n\n

100. The instrument used to measure radioactive contamination is<\/mark><\/strong>
A) Geiger counter
B) Photometer
C) Barometer
D) Microscope
Answer:<\/strong> A) Geiger counter
Explanation:<\/strong> It counts radiation pulses to determine contamination levels.<\/p>\n","protected":false},"excerpt":{"rendered":"

1. The instrument used to measure temperature isA) ThermometerB) BarometerC) HygrometerD) VoltmeterAnswer: A) ThermometerExplanation: A thermometer measures the degree of hotness or coldness of a body. 2. The instrument used to measure atmospheric pressure isA) BarometerB) ThermometerC) AltimeterD) AnemometerAnswer: A) Barometer 3. The instrument used to measure humidity in air isA) HygrometerB) BarometerC) ThermometerD) HydrometerAnswer:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-17647","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-blog"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/17647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=17647"}],"version-history":[{"count":3,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/17647\/revisions"}],"predecessor-version":[{"id":17699,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/17647\/revisions\/17699"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=17647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=17647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=17647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}