Free Technology and Energy MCQs with Answers
109 Technology and Energy MCQs from Everyday Science, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Technology and energy include simple machines, engines, generators, transformers, computers, communication systems, satellites and common electronic devices. Coverage compares fossil fuels, hydroelectricity, solar, wind, geothermal, biomass and nuclear energy, explaining efficiency, transmission, storage and environmental effects while distinguishing renewable sources from non-renewable sources.
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109 questions · page 2 of 6
- A. A human being whose physiological functions are aided by artificial means
- B. A Bionic Human
- C. An individual with artificial parts
- D. All of Above
Explanation: A cyborg is a biological organism, usually a human, whose functions are supported or enhanced by artificial or electronic components.
Correct answer: All of Above- A. ISS (International Space Station)
- B. AI powered robot
- C. Parabolic aircraft
- D. None of the above
Explanation: The International Space Station is the largest human-made structure in orbit, assembled from many pressurised modules and large solar…
Correct answer: ISS (International Space Station)- A. Boron and aluminium
- B. Silicon and Germanium
- C. Iridium and Tungston
- D. None of these
Explanation: Silicon and germanium are semiconductors whose electrical conductivity can be controlled by doping, making them suitable for transistor…
Correct answer: Silicon and Germanium- A. Long March-3D
- B. Long March-2D
- C. Vertical March-3D
- D. Orbital March-2D
Explanation: Lingxi-03, a Galaxy Space satellite, was launched aboard China's Long March-2D carrier rocket.
Correct answer: Long March-2D- A. Frequency modulation
- B. Frequency meter
- C. Fiber modulation
- D. Frequency Magnet
Explanation: FM means frequency modulation, in which information is carried by varying the frequency of a radio wave.
Correct answer: Frequency modulation- A. Geothermal energy
- B. Wind energy
- C. Hydroelectricity
- D. Biomass energy
Explanation: Hydroelectricity is generated by flowing or falling water, so it is often called white coal because water power replaces the role of coal…
Correct answer: Hydroelectricity- A. Methane
- B. Oxygen
- C. Hydrogen
- D. Carbon monoxide
Explanation: Gobar gas, or biogas produced from animal dung, is mainly methane, which burns as its fuel component.
Correct answer: Methane- A. An Israeli radar system
- B. An American anti-missile system
- C. A defence collaboration between Japan and South Korea
- D. A device used in nuclear-fusion research for magnetic confinement of plasma
Explanation: A tokamak is a doughnut-shaped device that uses magnetic fields to confine extremely hot plasma for nuclear-fusion research.
Correct answer: A device used in nuclear-fusion research for magnetic confinement of plasma- A. Amplitude modulated
- B. Frequency modulated
- C. fixe modulated
- D. Velocity modulated
Explanation: Television sound is commonly transmitted by frequency modulation, which resists many amplitude-noise disturbances.
Correct answer: Frequency modulated- A. Micro waves
- B. Radio waves
- C. A. M.
- D. Infra-red waves
Explanation: Artificial satellites commonly use microwaves because they have short wavelengths, carry large amounts of information, and pass through…
Correct answer: Micro waves- A. Power
- B. Electric Current
- C. Energy
- D. Time
- E. None of these
Explanation: A kilowatt-hour is power multiplied by time, so it measures electrical energy consumed.
Correct answer: Energy- A. Kerosene oil
- B. Paraffin oil
- C. Heavy Fuel oil
- D. Gasoline
Explanation: Light petrol engines use gasoline, a volatile liquid fuel that ignites readily in spark-ignition engines.
Correct answer: Gasoline- A. Aluminium
- B. Selenium
- C. Barium
- D. None of these
Explanation: Photostat and photocopier drums traditionally use selenium because it is a photoconductor: its electrical conductivity changes when light…
Correct answer: Selenium- A. Noble Prize
- B. UNESCO peace prize
- C. Right livelihood prize
- D. All of these
Explanation: The Nobel Prize is widely regarded as the highest-profile international award for major scientific achievements.
Correct answer: Noble Prize- A. Finance
- B. Transport
- C. logistic
- D. Supplies
Explanation: Finance is often called the lifeblood of industry because production, expansion, wages, and trade all require a continuous flow of…
Correct answer: Finance- A. Octane
- B. Cetane
- C. Protane
- D. Butane
Explanation: Cetane number measures the ignition quality of diesel fuel, with a higher number generally indicating easier and smoother ignition.
Correct answer: Cetane- A. Graphite
- B. Heavy Water
- C. Cadmium
- D. All of these
Explanation: Cadmium absorbs neutrons and is therefore used in control rods to regulate the chain reaction.
Correct answer: Cadmium- A. Plain Carbon Steel
- B. Stainless Steel
- C. Lead
- D. Copper
Explanation: Heat-exchanger tubes require adequate strength and heat-transfer performance, so materials such as carbon steel, stainless steel, and…
Correct answer: Lead- A. Photoelectric effect
- B. Electric-magnetic induction
- C. Centrifugation
- D. None of these
Explanation: A washing machine spins clothes rapidly so centrifugal action pushes water outward through the fabric and drum holes.
Correct answer: Centrifugation- A. Watt hour
- B. Joule hour
- C. Killowatt hour
- D. Kilo joule hour
Explanation: Domestic electricity consumption is measured in kilowatt-hours, the energy used by a 1-kilowatt appliance operating for one hour.
Correct answer: Killowatt hour