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mcq on Sources of energy for Students
What is the name of the process used to separate crude oil into its different components?
a. Disintegration distillation
b. Compound distillation
c. Destructive distillation
d. Fractional distillation
Option d – Fractional distillation
What are the traits of a reliable energy source?
a. It performs significant work per unit volume or Mass
b. It is cost-effective and easy to access
c. It can be conveniently stored and transported
d. All of these
Option d – All of these
What process powers the Sun’s energy?
a. Nuclear fission of hydrogen
b. Nuclear fusion of hydrogen
c. Natural combustion of hydrogen
d. Nuclear fission of uranium
Option b – Nuclear fusion of hydrogen
Why is a copper pipe coiled and painted black in a Solar water heater?
a. To increase water storage capacity
b. To increase surface area for Heat absorption
c. Both (a) and (b) are correct
d. Both (a) and (b) are incorrect
Option b – To increase surface area for Heat absorption
Which of these lists energy in various forms?
a. Mechanical energy
c. Muscular energy
d. Chemical, electrical, and other energy types
Option d – Chemical, electrical, and other energy types
During metal extraction, coke is primarily used as a:
a. Oxidizing agent
b. Reducing agent
c. Catalyst
d. Flux
Option b – Reducing agent
What drives the energy generation in Ocean Thermal Energy Conversion (OTEC) systems?
a. Tidal movements
b. Temperature differences in ocean layers
c. Ocean waves
d. None of these
Option b – Temperature differences in ocean layers
Why are coal, petroleum, and natural gas referred to as fossil fuels?
a. Because they release pollutants when burned
b. They originated from ancient plant and Animal remains
c. They are nonrenewable resources
d. They are combined with fossils to generate energy
Option b – They originated from ancient plant and Animal remains
What are the downsides of using fossil fuels?
a. Limited availability
b. High Pollution
c. Both (a) and (b)
d. None of these
Option c – Both (a) and (b)
Why is propane commonly used in rural areas instead of natural gas?
a. It’s safer
b. It’s portable
c. It’s cleaner
d. It’s more affordable
Option b – It’s portable
Wood, coal, wind, and water power are considered:
a. Conventional energy sources
b. Unconventional energy sources
c. Renewable sources
d. Non-renewable sources
Option a – Conventional energy sources
What is the primary component of biogas?
a. Methane
b. Carbon dioxide
c. Hydrogen
d. Hydrogen sulfide
Option a – Methane
The efficiency of wind energy production depends mainly on:
a. Damp air in rainy season
b. Height of the windmill tower
c. Wind speed
d. Planting tall trees nearby
Option c – Wind speed
Select the correct statement:
a. The Sun is an infinite energy source
b. Earth has endless fossil fuel reserves
c. Hydro and wind power are polluting
d. Nuclear plant waste is easily disposable
Option a – The Sun is an infinite energy source
What factors contribute to the soaring global energy demand?
a. Industrialization
b. Better quality of life
c. Increased transportation
d. All of the above and more
Option d – All of the above and more
Which of these is an incorrect description of wind power?
a. It’s used in open spaces with strong winds
b. Wind’s potential energy from high altitudes powers turbines
c. Blade motion is used to rotate machinery
d. Windmill motion powers a generator’s turbine
Option b – Wind’s potential energy from high altitudes powers turbines
Electricity can be generated from:
a. Mechanical energy
b. Chemical energy
c. Radiant energy
d. All of the above
Option d – All of the above
What happens in a hydropower plant?
a. Stored water’s potential energy is turned into Electricity
b. Stored water’s kinetic energy becomes potential energy
c. Electricity is extracted directly from water
d. Steam is produced from water to make Electricity
Option a – Stored water’s potential energy is turned into Electricity
In a Solar cooker, what causes the greenhouse effect?
a. Black coating inside the box
b. Reflective mirror
c. Glass cover
d. Outer body of the cooker
Option c – Glass cover
What fuel is primarily used in spacecraft?
a. Hydrogen
b. Alcohol
c. Petrol
d. Diesel
Option a – Hydrogen
Which of the following is a false statement?
a. Using more Solar cookers can help address the energy crisis
b. Relying more on non-renewable energy sources will solve the energy crisis
c. Recycling waste materials for energy can reduce the energy crisis
d. Conserving water contributes to overcoming the energy crisis
Option b – Relying more on non-renewable energy sources will solve the energy crisis
Why is butane the main component of LPG?
a. It can be easily liquefied under high pressure
b. It is made by reacting with ethane and propane
c. Both statements are true
d. Both statements are false
Option a – It can be easily liquefied under high pressure
Which element increases a fuel’s calorific value the most?
a. Carbon
b. Hydrogen
c. Oxygen
d. Nitrogen
Option b – Hydrogen
Why do we still face an energy crisis despite energy conservation laws?
a. Energy changes forms continually
b. Some energy is diverted to other tasks
c. Usable energy degrades into less useful forms
d. All of these
Option d – All of these
What best describes the process of combustion?
a. An exothermic oxidation reaction
b. A reduction and endothermic reaction
c. Both A and B
d. Neither A nor B
Option a – An exothermic oxidation reaction
What does NET primary productivity represent in plants?
a. Rate of Organic Matter production
b. Solar energy utilization rate
c. Rate of Organic Matter storage
d. Herbivore growth rate from biomass
What is meant by biomass?
a. Total dry Matter generated in an ecosystem
b. Total Food produced
c. Energy accumulated in Organisms
d. Energy consumed by Organisms
Option a – Total dry Matter generated in an ecosystem
How can the firewood shortage be resolved?
a. Expanding wastelands
b. Increasing farmland
c. Restoring barren land
d. Promoting energy plantations
Option d – Promoting energy plantations
Which plant is not suitable for producing fuel on wastelands?
a. Subabul
b. Eucalyptus
c. Avicennia
d. Casuarina
Option c – Avicennia
What are key elements of Social forestry?
a. Community members and labor
b. Idle land and Solar energy
c. Water sources
d. All of these
Option d – All of these
How is biogas generated from Organic waste?
a. Aerobic fermentation
b. Anaerobic fermentation
c. Direct combustion
d. Slow combustion
Option b – Anaerobic fermentation
Which system produces electrical signals?
a. Nervous system
b. Respiratory system
c. Circulatory system
d. Digestive system
Option a – Nervous system
How much energy is yielded by 1 gram of carbohydrates?
a. 2 kcal
b. 3 kcal
c. 4 kcal
d. 9 kcal
Option c – 4 kcal
How much energy is yielded by 1 gram of fats?
a. 9 kcal
b. 3 kcal
c. 2 kcal
d. 6 kcal
Option a – 9 kcal
What items are indigestible for carnivores?
a. Shells
b. Feathers
c. Hooves
d. All of these
Option d – All of these
What is the estimated daily household firewood need?
a. 3 kilograms
b. 11 kilograms
c. 25 kilograms
d. None
Option a – 3 kilograms
What helps prevent tree loss?
a. Small plants
b. Weeds
c. Wood
d. None
Option b – Weeds
What percentage of methane is found in biogas?
a. 50–70%
b. 10–20%
c. 15–30%
d. 25–30%
Option a – 50–70%
How much biogas is generated from 1 kg of cow dung?
a. 200 cc
b. 2000 cc
c. 100 cc
d. 1500 cc
Option a – 200 cc
How many stages are involved in biogas production?
a. 2
b. 3
c. 4
d. 6
Option b – 3
What hydrocarbon is mostly found in algae?
a. Alkanes
b. Alkenes
c. Alkynes
d. None
Option b – Alkenes
Which plant naturally contains petroleum compounds?
a. Casuarina
b. Eucalyptus
c. Calotropis procera
d. Leucaena
Option c – Calotropis procera
What energy form is used for creating molecules in cells?
a. Mechanical
b. Electrical
c. ATP
d. Heat
Option c – ATP
What kind of energy is carried by Light particles?
a. Bond energy
b. Chemical energy
c. Thermal energy
d. Electromagnetic radiation
Option d – Electromagnetic radiation
What happens to energy during transformation from one form to another?
a. Remains the same
b. Becomes less than the original
c. Becomes more than the original
d. Stays equal
Option b – Becomes less than the original
What type of process maintains cells and organs?
a. Energy-consuming
b. Energy-releasing
c. Mechanical
d. Thermal
Option a – Energy-consuming
What affects an organism’s basal metabolic rate?
a. Environment
b. Body temperature
c. Hormonal levels
d. All of these
Option d – All of these
Why is a mouse’s metabolic rate higher than an elephant’s?
a. Mice are more active
b. Elephants are active
c. Mice have a higher surface area relative to body weight
d. Elephants have a higher surface area relative to body weight
Option c – Mice have a higher surface area relative to body weight
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