Find here the Most Important NCERT chapter-wise Multiple Choice Questions from Class 10 Science with Answers Pdf free download. this may assist you to understand and check your knowledge about the chapters Most Important MCQ. Students also can take a free test of the Multiple Choice Questions of The chapters Most Important MCQ. Each question has four options followed by the right answer. These Most Important MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.
Q1. Which of the following is a non-renewable source of energy?
(a) Wood
(b) Sun
(c) Fossil fuels
(d) Wind
(c) Fossil fuels
Q2. Acid rain happens because
(a) Sun heats up the upper layer of the atmosphere
(b) burning of fossil fuels releases oxides of carbon, nitrogen and sulphur in the atmosphere
(c) electrical charges are produced due to friction amongst clouds
(d) earth atmosphere contains acids
(b) burning of fossil fuels releases oxides of carbon, nitrogen and sulphur in the atmosphere
Q3. Fuel used in thermal power plants is
(a) water
(b) uranium
(c) biomass
(d) fossil fuels
(d) fossil fuels
Q4. In a hydro power plant
(a) potential energy possessed by stored water is converted into electricity
(b) kinetic energy possessed by stored water is converted into potential energy
(c) electricity is extracted from water
(d) water is converted into steam to produce electricity
(a) potential energy possessed by stored water is converted into electricity
Q5. Which is the ultimate source of energy?
(a) Water
(b) Sun
(c) Uranium
(d) Fossil fuels
(b) Sun
Q6. Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
(a) Nuclear energy
(b) Thermal energy
(c) Solar energy
(d) Geothermal energy
(c) Solar energy
Q7. Ocean thermal energy is due to
(a) energy stored by waves in the ocean
(b) temperature difference at different levels in the ocean
(c) pressure difference at different levels in the ocean
(d) tides arising out in the ocean
(b) temperature difference at different levels in the ocean
Q8. The use of reflector in the solar cooker is to
(a) Decrease efficiency
(b) create green house effect
(c) increase efficiency
(d) None of the above
(b) create green house effect
Q9. Wind is caused due to
(a) uneven heating of earth’s surface
(b) rotation of earth
(c) local conditions
(d) All of the above
(d) All of the above
Q10. Hydropower plant are located in the
(a) desert area
(b) plane area
(c) hilly terrains
(d) None of the above
(c) hilly terrains
Q11. Select the important factor for the site selection of a thermal power plant.
(a) Distance from the populated area
(b) Availability of fuel
(c) Availability of water
(d) Cost of plant
(c) Availability of water
Q12. The main constituent of CNG is
(a) butane
(b) methane
(c) ethane
(d) propane
(b) methane
The temperature inside the solar cooker ranges from
(a) 500-100°C
(b) 100-140°C
(c) 150-200°C
(d) 70-80°C
(b) 100-140°C
Q14. Which of the following is not a bio mass energy source?
(a) gobar gas
(b) coal
(c) wood
(d) nuclear energy
(d) nuclear energy
Q15. Energy can neither be created nor destroyed but still everybody discuss about the energy crisis because
(a) Energy transform into different form continuously.
(b) Usable form of energy is dissipated to the surroundings in less usable forms.
(c) Energy is consumed and cannot be used again.
(d) All of the above
(d) All of the above
Q16. Dead organisms are transformed into petroleum and natural gas in
(a) presence of air
(b) absence of air
(c) presence of sunlight
(d) none of the above
(b) absence of air
Q17. Which one of the following is an renewable energy source?
(a) Coal
(b) Petroleum
(c) Natural gas
(d) Wind energy
(d) Wind energy
Q18. Which one of the following is a non-renewable energy source?
(a) Fossil fuels
(b) Solar energy
(c) Tidal energy
(d) Water energy
(a) Fossil fuels
Q19. A good source of energy is a given small amount of energy:
(a) Gives small amount of energy
(b) It cannot be stored easily
(c) It should be costly
(d) It should be easily accessible
(d) It should be easily accessible
Q20. Fossil fuel is non-renewable because:
(a) It is used more
(b) It is present underground
(c) It is formed in million of years by decomposition of plants and animals
(d) It is costly.
(c) It is formed in million of years by decomposition of plants and animals
Q21. Natural gas is better fossil fuel because:
(a) It is formed by decomposition of plants and animals
(b) It is found in gas form
(c) It is costly
(d) It is smokeless and no ash is left
(d) It is smokeless and no ash is left
Q22. Hydro power plants generate electricity from:
(a) a liquid
(b) by hot liquid
(c) by steam
(d) by potential energy of water
(d) by potential energy of water
Q23. Charcoal is a better source of energy than coal because:
(a) It is black in colour
(b) It has two ‘e’ in its name
(c) It is derived from coal
(d) It produces more heat, burns without flame and produces less smoke
(d) It produces more heat, burns without flame and produces less smoke
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