Advertisements
Advertisements
प्रश्न
Name two sources of energy that you think are renewable. Give reason for your choice.
उत्तर
The following are two sources of energy that are renewable.
a) Wind, which is used to generate energy using wind turbines
b) Water, which is used to generate hydroelectricity from flowing water
They are renewable because they are abundant in nature and can be used again and again..
APPEARS IN
संबंधित प्रश्न
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
What are the disadvantages of burning fossil fuels?
The energy in petrol originally came from the sun. Explain how it got into petrol.
What are the two ways in which cow-dung can be used as a fuel? Which of them is better and why?
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
Answer the following question.
Write the name of the main constituent of Biogas. Also, state its percentage.
State whether the following is True or False.
The Sardar Sarovar Dam is built on the river Narmada.
Who is the odd one out?
Which part of the solar cooker is responsible for greenhouse effect?