Units of Heat and Calorific Value Quiz
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Questions and Answers

What is the calorific value in BThU of 1 kcal?

  • 3.968 (correct)
  • 1.252
  • 2.2
  • 0.252

In the Bomb Calorimeter method, what is the purpose of burning a known quantity of fuel?

  • To calculate the water equivalent of calorimeter
  • To heat up the water (correct)
  • To cool down the water
  • To measure the temperature of the water

What is the calorific value in CHU of 1 kcal?

  • 0.252
  • 3.968
  • 1.252
  • 2.2 (correct)

In the FPS system, how is 1 BThU defined?

<p>The amount of heat required to raise the temperature of 1 pound of water by 1OF at 60-61OF (A)</p> Signup and view all the answers

How many calories are equal to 4.184 joules?

<p>418.4 (C)</p> Signup and view all the answers

What process is used to split bigger hydrocarbons into smaller hydrocarbons?

<p>Cracking (D)</p> Signup and view all the answers

Which type of coal contains the highest percentage of volatile matter?

<p>Peat (D)</p> Signup and view all the answers

What is the octane number of iso-octane (2,2,4-trimethyl pentane)?

<p>100 (C)</p> Signup and view all the answers

How can incomplete combustion be best identified in flue gases?

<p>Measuring CO levels (D)</p> Signup and view all the answers

What is the primary purpose of steam reforming methane with a Ni catalyst?

<p>To obtain hydrogen and carbon monoxide (A)</p> Signup and view all the answers

In which industry is liquid hydrogen commonly used as a fuel?

<p>Aerospace industry (D)</p> Signup and view all the answers

What is the purpose of treating crude oil with hot CuO?

<p>To separate sulphur from crude oil (B)</p> Signup and view all the answers

How is water removed from crude oil during the refining process?

<p>By passing the crude oil between electrodes (B)</p> Signup and view all the answers

In the fractional distillation of crude oil, which component gets condensed first?

<p>The component with the highest boiling point (B)</p> Signup and view all the answers

What is the main principle behind fractional distillation of crude oil?

<p>The component with the highest boiling point condenses first (B)</p> Signup and view all the answers

Why is a fractionating tower used in the process of fractional distillation?

<p>To allow different components to condense at their respective boiling points (D)</p> Signup and view all the answers

What is the purpose of Proximate Analysis of coal?

<p>To analyze the percentage of moisture and volatile matter in coal (D)</p> Signup and view all the answers

Which statement best describes the coalification process?

<p>Converting wood into peat, lignite, bituminous, and anthracite (B)</p> Signup and view all the answers

What is the main difference between GCV and NCV when analyzing coal?

<p>GCV accounts for the heat released by combustion, while NCV considers the moisture evaporated (A)</p> Signup and view all the answers

What does the percent fixed carbon in coal represent?

<p>The carbon content that remains after the volatile matter is driven off during combustion (C)</p> Signup and view all the answers

What is the primary reason for considering coal as a highly carbonaceous matter?

<p>Its formation from gradual decomposition of wood and inorganic matter (D)</p> Signup and view all the answers

What occurs during the coalification process from wood to anthracite?

<p>Increase in heating value (A)</p> Signup and view all the answers

What is the main difficulty in the storage and transportation of Hydrogen gas?

<p>Occupies large volume per unit weight (A)</p> Signup and view all the answers

How is liquid Hydrogen mainly transported?

<p>In cryogenic trailers (D)</p> Signup and view all the answers

In the process of combustion, what is the general outcome with regards to heat production?

<p>Evolution of heat (B)</p> Signup and view all the answers

What is considered dry flue gas in the context of combustion?

<p>By-products of combustion without moisture content (A)</p> Signup and view all the answers

In air quantity calculation for combustion, what percentage of O2 does air contain by volume?

<p>23% (A)</p> Signup and view all the answers

For gas fuels, how is the actual air volume required calculated during combustion?

<p>$Vol of O2 x (100 + % excess air)$ (A)</p> Signup and view all the answers

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