Advertisements
Advertisements
Question
Choose the correct answer.
The coal that has the highest percentage of carbon is
Options
anthracite
bituminous
lignite
peat
Advertisements
Solution
The coal that has the highest percentage of carbon is anthracite
APPEARS IN
RELATED QUESTIONS
Define ignition temperature of a fuel.
Fill in the following blank with a suitable word:
The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.
What is a source of energy? What are the two main categories of the sources of energy?
Classify the following into renewable and non-renewable sources of energy:
Coal, Wind, Tides, Petroleum,Wood, Natural gas
What is meant by conventional sources of energy? Write the names of two conventional sources of energy.
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
What should be the minimum wind speed for the satisfactory working of a wind-powered electric generator?
Name the clean fuel which can be obtained from cow-dung.
Suggest a safe and efficient method for the disposal of biowastes and sewage materials. How is this method advantageous to us?
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
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
Fill in the blank
__________ are examples of renewable energy resources.
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
State whether the following is True or False.
Coal takes millions of years to form.
Can you tell?
Why should we save energy?
Who is the odd one out?
Explain why is it no wise to regard wood as a renewable sources of energy.
Higher Order Thinking Skill (HOT)
What are the objectives for replacing non-conventional energy resources from conventional energy resources?
Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?
