Advertisements
Advertisements
प्रश्न
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
उत्तर
conversion of hydrogen gas into helium
The sun's energy is derived from the fusion of hydrogen nuclei into helium nuclei.
APPEARS IN
संबंधित प्रश्न
What are the disadvantages of fossil fuels?
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
The calorific values of three fuels A, B and C are 33 kJ/g, 48 kJ/g and 150 kJ/g, respectively. A is solid, B is liquid and C is a gas at room temperature. One combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal? Give two reasons to support your answer.
Explain why, natural gas is considered to be a good fuel.
What are fossil fuels? Give three examples of fossil fuels.
Fill in the blank
__________ are examples of renewable energy resources.
What are fossil fuels?
Why is charcoal considered better fuel than wood?
Choose the odd one:
