Very Short/Short Answer type questions
Very short answer type questions:
(i)Name two types of natural resources.
(ii)Define the term “Carbonisation”.
(iii)Which type of coal is also known as black lignite?
(iv)In which process coal is heated up to 1000°C in the absence of air to form useful components?
(v)Which component is a mixture of hydrogen, methane, carbon monoxide and other gases?
Short answer type of question:
(i)What are natural resources? Give examples.
(ii)How many types of natural resources and also define each of its category briefly?
(iii)Which is the most important exhaustible resource? Write its major types.
(iv)What do you understand by the term “Destructive Distillation”? Write at least two components prepared by this process.
(v)How do we extract petroleum gas? What is its use?
Short answer type questions/HOTS
Sam wants to establish iron and steel industry in his town. Therefore, he set-up a plant and identify that he requires an enormous amount of coke to produce the goods. What do you think Sam can do to get a large amount of coke and how does he produce coke?
How do you produce ammonium hydroxide solution? Name the process.
How do you perform the process of fractional distillation? Name some useful fractions produced by this method.
Complete the following table by providing correct process of producing the substance.
What is Peat? Write it uses and appearance.
Distinguish between lignite and bituminous.
Do you illustrate the difference between Petrol and Petroleum? Support your answer.
What do we call the process of converting dead vegetation into coal? Also write the types of coal and the carbon content present in them.
Long answer type questions:
Describe the process of destructive distillation. Also draw a well-labelled diagram of it.
Describe the components of petroleum and their uses in details.
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- NCERT Solution
Class 8 Maths
Class 8 Science