Question
Write a short note on petroleum.
✓
Answer
Petroleum is the liquid form of fuel. It is also known as crude oil and found trapped between the layers of impervious rocks under the ground. It is a natural resource, which formed by the dead plants and animals in the sea. It is a dark coloured viscous liquid and like all other oils, it is lighter than water. It is a mixture of different hydrocarbons. It undergoes fractional distillation to yield petrol, kerosene, diesel and other chemicals used in manufacture of plastics.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain the Structure of a Voltaic cell.
Place a pencil behind a transparent glass tumbler (Figure a). Now fill the tumbler halfway with water (Figure b). How does the pencil appear when mewed through the water? Explain why its shape appears changed.
Explain canning.
Explain why holes are made in banners and hoardings.
How does deforestation lead to frequent floods and droughts?
I wonder what makes the Earth unique for living beings to grow and survive!
Given below is a conversation between two farmers Heera and Beera.
Heera: Brother Beera, your maize crops looks beautiful! They have grown pretty fast.
Beera: Yes, I have sprayed urea this time. What about you?
Heera: Well, I am still relying on good old cow dung. I am saving money for buying a tractor.
Beera: That’s good. Tractor saves a lot of time and labour.
Heera: Yes, it’s been very labour intensive for me and now these weeds have come up.
Beera: Try weedicides, they are very effective. Now answer the following questions.
$i.$ List the practices which are not environment friendly and why?
$ii.$ What is the advantage of modern agriculture implements over traditional ones?
$iii.$ Name one weedicide and the precaution farmers must take during its application.
→Heera: Brother Beera, your maize crops looks beautiful! They have grown pretty fast.
Beera: Yes, I have sprayed urea this time. What about you?
Heera: Well, I am still relying on good old cow dung. I am saving money for buying a tractor.
Beera: That’s good. Tractor saves a lot of time and labour.
Heera: Yes, it’s been very labour intensive for me and now these weeds have come up.
Beera: Try weedicides, they are very effective. Now answer the following questions.
$i.$ List the practices which are not environment friendly and why?
$ii.$ What is the advantage of modern agriculture implements over traditional ones?
$iii.$ Name one weedicide and the precaution farmers must take during its application.
What is metamorphosis? Explain.
Differentiate between elements, compounds, and mixtures, highlighting their key characteristics and providing examples for each.
How can gold be classified as both a mineral and a metal?