41. How many thousands make 1 million?
Correct Answer: C. 1,000 thousands
Explanation: 1 million = 1,000 thousands (1,000 × 1,000 = 1,000,000).
42. How many millions make 1 billion?
Correct Answer: C. 1,000 millions
Explanation: 1 billion = 1,000 millions.
43. How many billions make 1 trillion?
Correct Answer: A. 1,000 billions
Explanation: 1 trillion = 1,000 billions.
44. How many trillions make 1 quadrillion?
Correct Answer: A. 1,000 trillions
Explanation: 1 quadrillion = 1,000 trillions.
45. How many quadrillions make 1 quintillion?
Correct Answer: A. 1,000 quadrillions
Explanation: 1 quintillion = 1,000 quadrillions.
46. How many quintillions make 1 sextillion?
Correct Answer: B. 1,000 quintillions
Explanation: 1 sextillion = 1,000 quintillions.
47. How many sextillions make 1 septillion?
Correct Answer: C. 1,000 sextillions
Explanation: 1 septillion = 1,000 sextillions.
48. How many septillions make 1 octillion?
Correct Answer: B. 1,000 septillions
Explanation: 1 octillion = 1,000 septillions.
49. How many octillions make 1 nonillion?
Correct Answer: C. 1,000 octillions
Explanation: 1 nonillion = 1,000 octillions.
50. How many nonillions make 1 decillion?
Correct Answer: C. 1,000 nonillions
Explanation: 1 decillion = 1,000 nonillions.
51. How many feet are in 1 Yard?
Correct Answer: D. 3 feet
Explanation: 1 yard = 3 feet (1 yard = 36 inches, 1 foot = 12 inches).
52. How many dynes are there in 1 gram weight?
Correct Answer: A. 980 dynes
Explanation: 1 gram weight = 980 dynes.
53. What is the unit of electric current?
Correct Answer: C. Ampere
Explanation: The SI unit of electric current is the ampere (A).
54. What is the unit of energy in the MKS system?
Correct Answer: A. Joule
Explanation: In the MKS system, energy is measured in joules.
55. At what temperature do Centigrade and Fahrenheit scales give the same reading?
Correct Answer: B. −40°
Explanation: At −40°, Celsius and Fahrenheit scales are equal.
56. What is a Light Year related to?
Correct Answer: B. Distance
Explanation: A light year is a unit of distance.
57. What is the SI Unit of Distance?
Correct Answer: A. Meter
Explanation: The SI unit of distance is the meter (m).
58. What is the SI Unit of Mass?
Correct Answer: A. Kilogram
Explanation: The SI unit of mass is the kilogram (kg).
59. What is the SI Unit of Volume?
Correct Answer: A. Cubic meter
Explanation: The SI unit of volume is the cubic meter (m³).
60. What is the SI Unit of Time?
Correct Answer: B. Second
Explanation: The SI unit of time is the second (s).
61. What is the SI Unit of Electric Charge?
Correct Answer: B. Coulomb
Explanation: The SI unit of electric charge is the coulomb (C).
62. What is the SI Unit of Amount of Substance?
Correct Answer: A. Mole
Explanation: The SI unit of amount of substance is the mole (mol).
63. What is the SI Unit of Luminous Intensity?
Correct Answer: A. Candela
Explanation: The SI unit of luminous intensity is the candela (cd).
64. What is the SI Unit of Temperature?
Correct Answer: A. Kelvin
Explanation: The SI unit of temperature is kelvin (K).
65. What is the SI Unit of Electric Current?
Correct Answer: A. Ampere
Explanation: The SI unit of electric current is the ampere (A).
66. What is the SI Unit of Frequency?
Correct Answer: D. Hertz
Explanation: The SI unit of frequency is hertz (Hz).
67. What is the SI Unit of Force?
Correct Answer: A. Newton
Explanation: The SI unit of force is the newton (N).
68. What is the SI Unit of Pressure?
Correct Answer: A. Pascal
Explanation: The SI unit of pressure is the pascal (Pa).
69. What is the SI Unit of Energy?
Correct Answer: B. Joule
Explanation: The SI unit of energy is the joule (J).
70. What is the SI Unit of Heat?
Correct Answer: B. Joule
Explanation: The SI unit of heat is the joule (J).
71. What is the SI Unit of Work?
Correct Answer: A. Joule
Explanation: The SI unit of work is the joule (J). 1 J = 1 N·m.
72. What is the SI Unit of Power?
Correct Answer: B. Watt
Explanation: The SI unit of power is the watt (W). 1 W = 1 J/s.
73. What is the SI Unit of Electrical Potential?
Correct Answer: D. Volt
Explanation: The SI unit of electrical potential is the volt (V).
74. What is the SI Unit of Voltage?
Correct Answer: A. Volt
Explanation: Voltage is measured in volts (V).
75. What is the SI Unit of Electrical Resistance?
Correct Answer: A. Ohm
Explanation: The SI unit of electrical resistance is the ohm (Ω).
76. What is the SI Unit of Capacitance?
Correct Answer: A. Farad
Explanation: The SI unit of capacitance is the farad (F).
77. What is the SI Unit of Magnetic Flux?
Correct Answer: C. Weber
Explanation: The SI unit of magnetic flux is the weber (Wb).
78. What is the SI Unit of Magnetic Flux Density?
Correct Answer: B. Tesla
Explanation: Magnetic flux density is measured in tesla (T).
79. What is the SI Unit of Electrical Conductance?
Correct Answer: A. Siemens
Explanation: The SI unit of electrical conductance is the siemens (S).
80. What is the SI Unit of Plane Angle?
Correct Answer: D. Radian
Explanation: The SI unit of plane angle is the radian (rad).
Units and Measurements MCQs are an essential part of competitive exams, especially in fields related to science, engineering, and technology. These questions are frequently asked in the General Science section of competitive exams. These questions test the candidates’ understanding of the fundamental concepts of units, their conversions, and how measurements apply in real-world scenarios. The knowledge of units and measurements plays a significant role in impacting aspirants’ scores, as they form the foundation for various scientific calculations and problem-solving skills. A solid grasp of this topic can make a huge difference in exam performance, providing candidates with the confidence to tackle technical questions.
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