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B.Tech Chemical Chemistry — practice by topic

Browse 30 questions across 3 Chemistry topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Chemistry topics

Chemical Engineering (30)Chemistry (30)Thermochemistry (30)

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A textbook defines the capacity to supply heat or do work. That capacity is:Read the answer and worked solution →A hot spoon rests in cold water. Thermal energy moving between them is called:Read the answer and worked solution →A spoon sits in water long enough. Heat flow between them stops once:Read the answer and worked solution →A cutting torch burns acetylene and pours out heat. That process is:Read the answer and worked solution →

Worked practice questions

A textbook defines the capacity to supply heat or do work. That capacity is:

  1. Energy
  2. Entropy
  3. Enzyme
  4. Estuary
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Correct answer: A. Energy

1. Both heating and working need a supply. 2. One quantity covers that ability. 3. That quantity is energy. _Source: OpenStax Chemistry 2e, Chapter 5, Thermochemistry._

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A hot spoon rests in cold water. Thermal energy moving between them is called:

  1. Hull
  2. Heat
  3. Haze
  4. Hail
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Correct answer: B. Heat

1. The two bodies are at different temperatures. 2. Thermal energy crosses from hot to cold. 3. That transfer is heat. _Source: OpenStax Chemistry 2e, Chapter 5, Thermochemistry._

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A spoon sits in water long enough. Heat flow between them stops once:

  1. Temps match
  2. Timers stop
  3. Tables tilt
  4. Tempers cool
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Correct answer: A. Temps match

1. A difference in temperature drives the flow. 2. Once that difference is gone the drive is gone. 3. So flow stops when temperatures match. _Source: OpenStax Chemistry 2e, Chapter 5, Thermochemistry._

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