MCQOPTIONS
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MCQOPTIONS
This section includes 102 Mcqs, each offering curated multiple-choice questions to sharpen your Graduate Aptitude Test (GATE) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which among the following comes under the study area of Psychrometrics? |
| A. | Relative Humidity |
| B. | physical and thermodynamic properties of gas-vapor mixtures |
| C. | theory and technique of educational and psychological measurement [ |
| D. | Atmospheric Pressure at Colder Regions of the World |
| Answer» C. theory and technique of educational and psychological measurement [ | |
| 52. |
parallax of one arc second” is a unit of which of the following? |
| A. | Time |
| B. | Volume |
| C. | Length |
| D. | Speed |
| Answer» D. Speed | |
| 53. |
Edwin Howard Armstrong was an inventor of which of the following technologies? |
| A. | Television |
| B. | Compact Discs |
| C. | FM Radio |
| D. | Broadband |
| Answer» D. Broadband | |
| 54. |
Which of the following is an instrument for measuring electric charge or electrical potential difference? |
| A. | Ammeter |
| B. | Voltmeter |
| C. | Electrometer |
| D. | ohmmeter |
| Answer» C. Electrometer | |
| 55. |
Which among the following temperature scale is based upon absolute zero? |
| A. | Celsius |
| B. | Fahrenheit |
| C. | Kelvin |
| D. | Rankine |
| Answer» D. Rankine | |
| 56. |
Which among the following is known as first electronic amplification device.? |
| A. | Diode |
| B. | Triode Vaccum Tubes |
| C. | Vacuum Tubes |
| D. | bipolar transistors |
| Answer» C. Vacuum Tubes | |
| 57. |
what is the normal temperature of human being on Kelvin scale? |
| A. | 290 |
| B. | 300 |
| C. | 310 |
| D. | 320 |
| Answer» D. 320 | |
| 58. |
Ultrasound which is upper limit of human hearing is characterized by which of the following frequencies? |
| A. | Above 20 KHz |
| B. | Above 200 KHz |
| C. | Above 2 KHz |
| D. | Below 20 KHz |
| Answer» B. Above 200 KHz | |
| 59. |
A small quantity of water is placed in a small cavity made in a block of Ice at 0 degree centigrade. Which of the following will happen? |
| A. | the temperature of water will become zero and it will freeze |
| B. | the temperature of water will become zero but it will not freeze [ |
| C. | the temperature of the water will become zero and it will come out of the cavity [ |
| D. | the temperature of the water will become zero and ice will melt to merge with water |
| Answer» C. the temperature of the water will become zero and it will come out of the cavity [ | |
| 60. |
Who was the first scientist to be awarded two Nobel Prizes? |
| A. | Linus Pauling |
| B. | Frederick Sanger |
| C. | Marie Curie |
| D. | John Bardeen |
| Answer» D. John Bardeen | |
| 61. |
Which among the following is a Beyond-visual-range air-to-air missile |
| A. | Agni |
| B. | Prithvi |
| C. | Astra |
| D. | Nag |
| Answer» D. Nag | |
| 62. |
Which among the following is the most acceptable range of LEO (Low Earth orbit)? |
| A. | 350 – 2,600 kms |
| B. | 200-2000 kms |
| C. | 160 – 2,000 kms |
| D. | 160-1600 kms |
| Answer» D. 160-1600 kms | |
| 63. |
Who among the following coined the term “cosmic rays” ? |
| A. | Henri Becquerel |
| B. | Theodor Wulf |
| C. | Robert Millikan |
| D. | Bruno Rossi |
| Answer» D. Bruno Rossi | |
| 64. |
The following is measured in tonne of oil equivalent (toe) ? |
| A. | Volume of Oil |
| B. | Energy released by burning of oil |
| C. | Demand of Crude oil at a point of time |
| D. | Oil production capacity of a country |
| Answer» C. Demand of Crude oil at a point of time | |
| 65. |
In context with electromagnetism, which among the following is a correct definition of Permeability? |
| A. | Ability of a material to repel magnetic field within itself |
| B. | Ability of a material to support the formation of a magnetic field within another body |
| C. | Ability of a material to support the formation of a magnetic field within itself |
| D. | Ability of a material to create magnetic dipoles |
| Answer» D. Ability of a material to create magnetic dipoles | |
| 66. |
An electrical fuse is used to interrupt excessive________? |
| A. | Voltage |
| B. | Current |
| C. | Resistance |
| D. | Inductance |
| Answer» C. Resistance | |
| 67. |
Which among the following component of a fluorescent lamp contributes maximum in making them costly? |
| A. | Mercury vapor |
| B. | Light-emitting phosphors |
| C. | Ballast |
| D. | Filament |
| Answer» D. Filament | |
| 68. |
Which among the following instruments used in Forensic Sciences is popular as Lie detector? |
| A. | SmartWater |
| B. | Culpascope |
| C. | Polygraph |
| D. | Bio Sensor |
| Answer» D. Bio Sensor | |
| 69. |
Which among the following are used in Computed tomography (CT) Scan? |
| A. | X-Rays |
| B. | Ultrasound |
| C. | Infrared waves |
| D. | Radio Waves |
| Answer» B. Ultrasound | |
| 70. |
In which year, Sir Chandrasekhara Venkata Raman was awarded Nobel Prize for Raman effect? |
| A. | 1927 |
| B. | 1929 |
| C. | 1930 |
| D. | 1932 |
| Answer» D. 1932 | |
| 71. |
At which of the following places water shall boil at the lowest temperature? |
| A. | Kochi |
| B. | ooty |
| C. | Mount Abu |
| D. | New Delhi |
| Answer» C. Mount Abu | |
| 72. |
A vehicle moving on a circular path experiences ________? |
| A. | centripetal force |
| B. | centrifugal force |
| C. | gravitational force |
| D. | None of the above |
| Answer» B. centrifugal force | |
| 73. |
“Svedberg Unit” is a unit of _________? |
| A. | Concentration |
| B. | Size |
| C. | Density |
| D. | Time |
| Answer» E. | |
| 74. |
One Torr is equivalent to how many mm of Mercury? |
| A. | 1 mm |
| B. | 10 mm |
| C. | 100 mm |
| D. | 0.1 mm |
| Answer» B. 10 mm | |
| 75. |
Which among the following is the most common cause of Sunburn? |
| A. | Ultraviolet Radiation |
| B. | Visible Radiation |
| C. | Infrared Radiation |
| D. | Microwave Radiation |
| Answer» B. Visible Radiation | |
| 76. |
Which among the following strictly works on the principle of dipole movement of the water molecules? |
| A. | Refrigerator |
| B. | Microwave Oven |
| C. | Air Conditioner |
| D. | Electric Geyser |
| Answer» C. Air Conditioner | |
| 77. |
Which among the following waves are most commonly used in the Night Vision Devices? |
| A. | Microwaves |
| B. | Infra Red Waves |
| C. | Ultra Violet Waves |
| D. | Radio Waves |
| Answer» C. Ultra Violet Waves | |
| 78. |
Which among the following waves are used in the gemstone industry to change white topaz into blue topaz? |
| A. | X-Rays |
| B. | Gamma Rays |
| C. | Alpha Radiation |
| D. | Beta Radiation |
| Answer» C. Alpha Radiation | |
| 79. |
What do we call the part of the “DTH Satellite dish” that converts the signals from electromagnetic or radio waves to electrical signals ? |
| A. | Orthomode transducer (OMT) |
| B. | Low-noise block converter (LNB) |
| C. | Block upconverter (BUC |
| D. | Parabolic Dish |
| Answer» C. Block upconverter (BUC | |
| 80. |
The power we use at Home has a frequency of 60Hz. What would be the period of the sine wave? |
| A. | 0.116 seconds |
| B. | 0.0116 seconds |
| C. | 0.00116 secon |
| D. | 0.0016 Microseconds |
| Answer» C. 0.00116 secon | |
| 81. |
Which among the following correctly represents a Parsec? |
| A. | 0.326 Light Years |
| B. | 3.261 Light Years |
| C. | 32.61 Light Years |
| D. | 3.026 Light Years |
| Answer» C. 32.61 Light Years | |
| 82. |
“Fermi” is a unit of which among the following? |
| A. | Mass |
| B. | Length |
| C. | Velocity |
| D. | Frequency |
| Answer» C. Velocity | |
| 83. |
The term “Isopycnic” is most closely defined by which among the following? |
| A. | Gravitation |
| B. | Viscosity |
| C. | Magnetic Properties |
| D. | Entropy |
| Answer» C. Magnetic Properties | |
| 84. |
Which among the following is measured by an Odometer? |
| A. | Pressure |
| B. | Height |
| C. | Distance |
| D. | Velocity |
| Answer» D. Velocity | |
| 85. |
In many countries with cold climates, the municipalities often sprinkle salt on icy roads in winter. Which among the following is the correct reasonfor this? |
| A. | The Salt inhibits the formation of Ice Crystals |
| B. | The Salt lowers the Freezing Point of water |
| C. | The Salt raises the freezing Point of water |
| D. | The salt provides necessary friction to the tires of the vehicles |
| Answer» C. The Salt raises the freezing Point of water | |
| 86. |
Which among the following is the correct statement about Black Ice? |
| A. | It is the product of the freezing of water droplets in highly polluted air |
| B. | It is the thin transparent layer of ice made up usually on roads and pavement |
| C. | It is the solid Carbon Dioxide |
| D. | It is the frozen water of a highly polluted river |
| Answer» C. It is the solid Carbon Dioxide | |
| 87. |
How does the Isotope of Iodine, Iodine-135 plays an important role in Nuclear Power Generation? |
| A. | It is used as a fuel supplement in some of the modern Nuclear Reactors |
| B. | It is a bi-product of Nuclear Reaction which kills the neutrons and this inhibits the power formation |
| C. | It is a moderator used actively in the Nuclear Reactors |
| D. | It is an experimental substance for Nuclear Fusion |
| Answer» C. It is a moderator used actively in the Nuclear Reactors | |
| 88. |
Which among the following has the lowest frequency Range? |
| A. | L-Band |
| B. | S-Band |
| C. | C-Band |
| D. | X-Band |
| Answer» B. S-Band | |
| 89. |
An instrument called “Theodolite” is used in which among the following ? |
| A. | Measuring distances, elevations, bearings etc. |
| B. | Measuring rotational speed of a shaft |
| C. | Measuring horizontal and vertical angles in triangular networks |
| D. | Measuring acidity or alkalinity of solutions |
| Answer» D. Measuring acidity or alkalinity of solutions | |
| 90. |
A “Charge-coupled device” in the modern Digital Cameras has replaced which among the following in the traditional Cameras? |
| A. | Lens |
| B. | Shutter |
| C. | Photographic film |
| D. | Flash equipment |
| Answer» D. Flash equipment | |
| 91. |
An antenna in a Geostationary satellite should have a minimum beam width of which among the following values to cover the entire earth? |
| A. | 8.56° |
| B. | 17.34° |
| C. | 22.16° |
| D. | 23.25° |
| Answer» C. 22.16° | |
| 92. |
Which among the following phenomena of the optics makes the Endoscopy capable of examining the internal organs such as Abdomen? |
| A. | Interference |
| B. | Total Internal Reflection |
| C. | Diffraction |
| D. | Scattering |
| Answer» C. Diffraction | |
| 93. |
Which among the following is the SI physical unit of dynamic viscosity? |
| A. | Poise |
| B. | Pascal-second |
| C. | Newton-second |
| D. | Poise-second |
| Answer» C. Newton-second | |
| 94. |
If an egg with shell is placed in a microwave oven, which among the following would most likely happen? |
| A. | The egg will not get warmed |
| B. | The egg will get cooked slowly similar to a boiled egg |
| C. | The egg shell will explode |
| D. | The egg shell becomes yellow |
| Answer» D. The egg shell becomes yellow | |
| 95. |
Two Flat mirrors are placed at an angle of 60° from each other. How many images will be formed of a Candle placed in between them? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 96. |
If a moving body turns its speed to 1.5 times, what will be the impact on its kinetic energy? |
| A. | will become 1.5 times |
| B. | will become 3 times |
| C. | will become 2.25 times |
| D. | will become 6 times |
| Answer» D. will become 6 times | |
| 97. |
Which of the following statements is not true regarding LASER? |
| A. | A LASER is a device that emits light through a process of optical amplification . |
| B. | LASER beams can be focused to very tiny spots, achieving a very high irradiance. |
| C. | The emitted LASER light is notable for its high degree of dispersive power unattainable using other technologies. |
| D. | LASER light is used in bar-code scanners |
| Answer» D. LASER light is used in bar-code scanners | |
| 98. |
Crystals of which of the following naturally-occuring substance exhibits both ‘pyroelectric’ and ‘piezoelectric’ properties making it versatile for ap |
| A. | Quartz |
| B. | Mica |
| C. | Topaz |
| D. | grapite |
| Answer» B. Mica | |
| 99. |
The television technology in which a new form of light-emitting crystals which can be printed onto flexible plastic sheets to produce a paper-thin dis |
| A. | QD-TV |
| B. | SED-TV [ |
| C. | Pixel Plus |
| D. | Slingbox |
| Answer» B. SED-TV [ | |
| 100. |
The power of a lens is measured in : |
| A. | diopters |
| B. | aeon |
| C. | lumen |
| D. | candela |
| Answer» B. aeon | |