Tag: energy

Quizzes (26) Questions (122)

Questions Related to energy

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

Which of the following aromatic compound is not obtained from reformate during cracking?

  1. Xylene

  2. Toluene

  3. Cummene

  4. Benzene
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Cracking is a process of refining or extraction of crude oil. In this process heat and pressure is used to break, rearrange or combine hydrocarbon molecules. In this process more the depth of cracking, lower octane number of gasoline are obtained. Cummene is not obtained during cracking.
Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

The temperature range of kerosene obtained from petrol is ___________.

  1. between $400^0C to 500^0C$.
  2. between $300^0C to 500^0C$.
  3. between $300^0C to 200^0C$.
  4. between $100^0C to 200^0C$.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. Kerosene is obtained from petroleum between $ 200^0C  to  300^0C $.
Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

The hydrocarbons present in diesel are from:

  1. $C _{15}\ to\ C _{18}$
  2. $C _{25}\ to\ C _{38}$
  3. $C _{35}\ to\ C _{58}$
  4. $C _{55}\ to\ C _{68}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydrocarbons present in

Gasoline $\Rightarrow C _3-C _{12}$
Napthalene $\Rightarrow C _8-C _{12}$
Kerosene/Jet fuels $\Rightarrow C _{11}-C _{14}$
Diesel & fuel oils $\Rightarrow C _{15}-C _{18}$
The hydrocarbons present in diesel are $C _{15}-C _{18}$.

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

The petrol, octance number of which is $80$, has:

  1. $20\%$ n - heptane + $80\%$ iso-octane
  2. $20\%$ n - heptane + $80\%$ n-octane
  3. $80\%$ n - heptane + $20\%$ iso-octane
  4. $80\%$ n - heptane + $20\%$ n-octane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Petrol, which has octane number 80 contain 20% n-heptane and 80% iso-octane.

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

$90-$ Octane Petrol is a rating that indicates that the petrol in the engine would not waster its energy in making a 'knocking sound', but would rather use its energy efficiency to maintaining speed for travel $'90-Octane$ petrol' means that the petrol is as good as:

  1. $90$% octane
  2. $90$% normal heptane and $10$% iso-octane
  3. A mixture of $90$% iso-octane and $10$% normal (straight chain) heptane
  4. $90$% petrol
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

90-Octane petrol is the  mixture of 90% iso-octane and 10% normal (straight chain) heptane.

Hence option C is correct.

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

Synthetic petrol and kerosine can be made form coal by passing one of the following gases under heat and pressure over-coal.

  1. Nitrogen

  2. Hydrogen

  3. Oxygen

  4. Carbon dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When coal is passed through hydrogen under heat and pressure it produces synthetic petrol and kerosene which is used for household fuel.

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

Octane number is a scale for counting?

  1. the quantity of water present in alcohol.

  2. the percentage of liquefied petroleum gas in a given sample of petrol.

  3. the quality of petrol

  4. the number of different hydrocarbons present in a sample of petrol.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Octane rating or octane number is a standard measure of the performance of a motor- or aviation fuel. The higher the octane number, the more compression the fuel can withstand. fuels with a higher octane rating are used in high performance petrol engines that require higher compression ratios. thus it reflects the quality of fuel.

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

Quality of a diesel is measured in terms of its?

  1. Cetane number

  2. Octane number

  3. Gold number

  4. Avogadro number
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A cetane number is the measure of the quality of the diesel . Higher cetane number indicates that the fuel ignites more readily when sprayed over hot compressed air.

Multiple choice chemistry energy rocks and minerals petroleum and natural gas fossil fuels

Which of the following is present in the heavy oil obtained during petroleum distillation ?

  1. Gas oil

  2. Fuel oil

  3. Diesel oil

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The following fuels are present in the heavy oil obtained during petroleum distillation 1. Gas oil  2.Fuel oil and Diesel oil.

So all the given options are correct.

Hence option D is correct.