Indian Navy Pilot Thermodynamics — practice questions

Explore 3 free Thermodynamics questions in Indian Navy Pilot Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Thermodynamics questions and exercises with answers

Showing questions 1–3 of 3.

As per your syllabus, for an ADIABATIC process (no heat exchange, q = 0), the first law reduces to which form?Read the answer and worked solution →As per your syllabus, a reaction with ΔH < 0 AND ΔS > 0 is spontaneous under which condition?Read the answer and worked solution →Complete the Gibbs free energy formulaRead the answer and worked solution →

Worked practice questions

As per your syllabus, for an ADIABATIC process (no heat exchange, q = 0), the first law reduces to which form?

ΔU = w_ad
ΔU = 0
ΔU = q
ΔU = pΔV

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Correct answer: A. ΔU = w_ad

As per your syllabus, adiabatic: q=0 → ΔU = w_ad. All energy change comes from work.

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As per your syllabus, a reaction with ΔH < 0 AND ΔS > 0 is spontaneous under which condition?

Only at low T
At ALL temperatures
Only at high T
Never

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Correct answer: B. At ALL temperatures

As per your syllabus, ΔH(−) + ΔS(+) ⇒ ΔG = ΔH − TΔS is always negative ⇒ spontaneous at all T.

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Complete the Gibbs free energy formula

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Missing parts

Answer
ΔG
Choices
1. ΔG
2. ΔH
3. ΔU
Answer
ΔH
Choices
1. ΔH
2. ΔS
3. T
Answer
ΔS
Choices
1. ΔS
2. ΔH
3. ΔG

Complete the statement

{0} = {1} − T·{2}, where a negative value indicates the reaction is spontaneous.

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