Advertisements
Advertisements
प्रश्न
A good fuel is one which possesses:
(a) high calorific value and low ignition temperature
(b) high calorific value and high ignition temperature
(c) high calorific value and moderate ignition temperature
(d) low calorific value and moderate ignition temperature
उत्तर
high calorific value and moderate ignition temperature
A good fuel should have a high calorific value so that it can give us more heat per unit mass. It should also have a moderate ignition temperature.
APPEARS IN
संबंधित प्रश्न
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name the element X.
What is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?
Describe the construction and working of a biogas plant with the help of a labelled diagram.
The gravitational pull of the moon cause the sea-water to rise periodically.
(a) What name is given to the condition of the sea when water to rise periodically.
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagram to show how this energy can be harnessed from this natural
When the material A mined from the earth is heated strongly in an insufficient supply of air, it produces a solid fuel B which consists mainly of carbon. When another material C obtained from trees is heated in an insufficient supply of air, it produces another solid fuel D which also consists mainly of carbon. Name A, B, C and D
Which of the following is ultimately not derived from the sun's energy (or solar energy)?
(a) wind energy
(b) nuclear energy
(c) biomass energy
(d) ocean thermal energy
Write a short note on nuclear power.
Why should we conserve the non-renewable sources of energy?
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Nutsgilh is an example of inexhaustible natural resources.
