Agniveer Army Technical Thermodynamics & Equilibrium Questions
Top 20 Practice MCQs — with Solutions & Shortcuts
This page covers the top 20 Agniveer Army Technical Thermodynamics & Equilibrium questions with full solutions, difficulty grading, and exam-specific shortcuts. All 4 subtopics are covered with graded practice MCQs.
Which of the following salts will hydrolyze in water to produce an acidic solution?
Q2Easy
What is the oxidation state of sulfur in H₂S₂O₃?
Q3Easy
The ionic product of water (Kw) at 25°C is 1.0 × 10⁻¹⁴. What is the pH of a neutral solution at this temperature?
Q4Easy
The solubility product (Ksp) of AgCl at 25°C is 1.8 × 10⁻¹⁰. If the concentration of Cl⁻ ions in a saturated solution is 1.34 × 10⁻⁵ M, what is the concentration of Ag⁺ ions?
Q5Easy
In the reaction 2KMnO₄ + 3H₂O₂ + 3H₂SO₄ → K₂SO₄ + 2MnSO₄ + 5O₂ + 8H₂O, what is the oxidation state change of manganese?
Q6Easy
In the redox reaction 3Cu + 8HNO₃(dilute) → 3Cu(NO₃)₂ + 2NO + 4H₂O, how many electrons are transferred per mole of Cu oxidized?
Q7Easy
In the equilibrium: PCl₅(g) ⇌ PCl₃(g) + Cl₂(g), if temperature is increased, the equilibrium shifts to the right. This indicates that the forward reaction is:
Q8Easy
Which of the following is an extensive property in thermodynamics?
Q9Easy
If the enthalpy change (ΔH) for a reaction is negative, the reaction is classified as:
Q10Easy
A weak acid HA has a Ka value of 1.8 × 10⁻⁵. Which of the following correctly describes the strength of this acid relative to strong acids?
Q11Easy
The first law of thermodynamics states that ΔU = q + w. What does 'w' represent?
Q12Easy
The Ka of acetic acid is 1.8 × 10⁻⁵ and its Kb is 5.6 × 10⁻¹⁰. What is the relationship between Ka, Kb, and Kw for the acetate ion (CH₃COO⁻)?
Q13Easy
At constant pressure and temperature, a spontaneous process must have:
Q14Easy
Which species acts as the reducing agent in the reaction: Cl₂ + 2KBr → 2KCl + Br₂?
Q15Easy
The standard enthalpy of formation (ΔH°f) of an element in its standard state is:
Q16Easy
For the reaction: N₂(g) + 3H₂(g) ⇌ 2NH₃(g), if the equilibrium constant is Kc = 0.5 at 400°C, what is the relationship between forward and reverse reaction rates at equilibrium?
Q17Easy
For the equilibrium: 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), the equilibrium constant expression Kc is:
Q18Easy
When the pressure on the equilibrium system: N₂(g) + O₂(g) ⇌ 2NO(g) is increased, how does the equilibrium shift?
Q19Easy
For the reaction: H₂(g) + I₂(g) ⇌ 2HI(g), Kc = 50 at 440°C. What is the value of Kc for the reverse reaction: 2HI(g) ⇌ H₂(g) + I₂(g)?
Q20Easy
In the reaction Fe²⁺ + MnO₄⁻ + H⁺ → Fe³⁺ + Mn²⁺ + H₂O, what is the ratio of Fe²⁺ to MnO₄⁻ that must be used for complete redox balance?
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