Question 1

Petroleum is a renewable fossil fuel

Accepted Answer

Petroleum is a fossil fuel which is formed deep under the earth's crust in thousands of years which is a non renewable resource which once depleted cannot be replenished back.It cannot be made artificially in the laboratories.

Question 2

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Accepted Answer

Oil layer is above on water layer because of API gravity. API gravity is a measure of the density of petroleum liquid compared to water. If a petroleum liquids API gravity is greater than 10, it is light, and floats on top of water. If the API gravity is less than 10, it is heavy, and sinks in water.

Question 3

State whether the statement is true of false. Rewrite the false statement correctly.The most accepted theory about the origin of petroleum is believed to be of organic origin.

Accepted Answer

Thus current theory holds that most petroleum is formed by the thermal maturation of organic matter - An Organic Origin generated the vast reserves (pools) of oil and gas. Organic Hypothesis: There are a number of compelling reasons that support an organic development hypothesis.hence , the given statement is true .

Question 4

The boiling range of diesel is :

Accepted Answer

Diesel fuel is a
mixture of hydrocarbons with boiling points in
the range of 150 to
380°C which are obtained from petroleum.

Question 5

Write a short note on occurence of petroleum.

Accepted Answer

Petroleum is formed from the remains of dead plants and animals.When plants and animals die, they sink and settle on the seabed.Millions of years ago, these dead wildlife and vegetation decomposed and got mixed with sand and silt.Certain bacteria helped in the decomposition of this organic matter and caused some chemical change.Matter consisting of largely carbon and hydrogen was left behind. However, as there is not sufficient oxygen at the bottom of the sea, the matter could not decompose completely.The partially decomposed matter remained on the seabed and eventually was covered with multiple layers of sand and silt.This burying took millions of years, and finally, due to high temperature and pressure, the organic matter decomposed completely and formed oil.

Question 6

The layer containing petroleum oil and gas is:

Accepted Answer

The density of gasoline ranges from 0.71–0.77 kg/L, where as that of water is 1kg/L, oil is less dense than water so it will "float" on water. Gas is less dense than both and will float to the top. higher densities having a greater volume of aromatics. Since gasoline floats on water, water cannot generally be used to extinguish a gasoline fire unless used in a fine mist. The petroleum products will separate by density.

Question 7

Petroleum oil is found:

Accepted Answer

Petroleum oil is found deep underground in seabeds.

Question 8

Petroleum is ________natural resource .

Accepted Answer

Petroleum is a non-renewable natural resource. It gets exhausted because it is not a natural renewable source.So, Petroleum is exhaustible natural resource.

Question 9

Natural gas is found as:

Accepted Answer

Natural gas is found in deep underground rock formations as a layer above petroleum oil deep underground or associated with other hydrocarbon reservoirs in coal beds and as methane clathrates. Petroleum is another resource and fossil fuel found close to and with natural gas. Thus, option C is correct.

Question 10

Petroleum is formed from:

Accepted Answer

Petroleum (also known as crude oil or simply oil) is a fossil fuel that was formed from the remains of ancient marine organisms. Millions of years ago, algae and plants lived in shallow seas. After dying and sinking to the seafloor, the organic material mixed with other sediments and was buried.

Important questions on Petroleum And Natural Gas

Petroleum is a renewable fossil fuel

True

False

We see oil layer above water layer

Petroleum liquids API gravity is greater than 10

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Assertion is correct but Reason is incorrect

Both Assertion and Reason are incorrect

State whether the statement is true of false. Rewrite the false statement correctly. The most accepted theory about the origin of petroleum is believed to be of organic origin.

True

False

The boiling range of diesel is :

300oC to 350oC.

400oC to 450oC.

400oC to 550oC.

200oC to 450oC.

Write a short note on occurence of petroleum.

The layer containing petroleum oil and gas is:

below water

between water and sand

below sand

above the water

Petroleum oil is found:

deep underground (sea beds)

in mountains

in glacier

in river

Petroleum is ________natural resource .

exhaustible

Inexhaustible

both (a) & (b)

none of these

Natural gas is found as:

layer above hot-beds

layer below petroleum oil deep underground

layer above petroleum oil deep underground

layer below the glacier

Petroleum is formed from:

insects

wild animals

organisms in sea

domestic animals

More important questions

State whether the statement is true of false. Rewrite the false statement correctly.
The most accepted theory about the origin of petroleum is believed to be of organic origin.

300 $^{o}$ C to 350 $^{o}$ C.

400 $^{o}$ C to 450 $^{o}$ C.

400 $^{o}$ C to 550 $^{o}$ C.

200 $^{o}$ C to 450 $^{o}$ C.