Advertisements
Advertisements
प्रश्न
State whether the following is True or False.
Renewable energy resources have limited supply in nature.
विकल्प
True
False
Advertisements
उत्तर
False
Correct Statement: Renewable energy resources have an unlimited supply in nature.
APPEARS IN
संबंधित प्रश्न
What are the disadvantages of fossil fuels?
Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
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
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 is the composition of liquefied petroleum gas (LPG)?
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
What are the various steps which can be taken to control (or reduce) pollution caused by burning fossil fuels?
The pollution of air caused by burning petroleum fuels (like petrol and diesel) in vehicles can be controlled by fitting a device X in the exhaust system of vehicles.
How does this device help in controlling air pollution?
Name the clean fuel which can be obtained from cow-dung.
Describe the construction and working of a biogas plant with the help of a labelled diagram.
Most of the sources of energy that we sue represent stored solar energy. Which of the following is not ultimately derived from the sun's energy?
(a) wind energy
(b) geothermal energy
(c) fossil fuels
(d) biomass
The non-renewable source of energy among the following is:
(a) hydroelectricity
(b) sewage gas
(c) natural gas
(d) gobar gas
You have three unlabelled test tubes containing ethanol, ethanoic acid and soap solution. Explain the method you would use to identify the compounds in different test tubes by chemical tests using litmus paper and sodium metal.
What are renewable energy resources?
Who is the odd one out?
Why should we conserve the non-renewable sources of energy?
Name two forms of sea energy.
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Why petrol is exhaustible natural resource, whereas sunlight is not? Explain.
