Stoichiometry

391. Which of the following is not a unit of pressure?

1. Parsec
2. Kilo-Pascal
3. Bar
4. Newton/metre²

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392. Which of the following is not used for computing latent heat of vaporisation?

1. Clausius-Clapeyron equation
2. Reference substance plots based on Duhring & Othmer plots
3. Kistyakowasky's equation
4. Hess's law of constant heat summation

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393. Which of the following is the Clausius-Clapeyron Equation?

1. PV = RT + B/V + y/V² + ....
2. (P + a/V²)(V-b) = RT
3. log_e (p/p₀) = (λ/R) (1/T₀ - 1/T)
4. p = [RT/(V - b)] - (a/TV²)

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394. Which of the following ratios defines the recycle ratio in a chemical process?

1. Gross feed stream/recycle feed stream
2. Recycle stream/fresh feed stream
3. Recycle stream/gross feed stream
4. None of these

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395. Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces?

1. RT
2. P + (a/V²)
3. (V - b)
4. 1/RT

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396. Which property of refractories is the most important for top section of the blast furnace?

1. Resistance to abrasion
2. Resistance to slag penetration
3. Stability of volume at high temperature
4. Resistance to corrosion by slag

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397. With increase in temperature, the surface tension of water

1. Increases
2. Decreases
3. Remain constant
4. Increases linearly

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398. With increase in the alumina content, the refractoriness of high alumina refractories

1. Increases
2. Decreases
3. Remain same
4. May increase or decrease

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399. With increase in the porosity, thermal spalling resistance of fireclay brick

1. Increases
2. Decreases
3. Remain same
4. May increase or decrease

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400. With increase in the solute concentration, the specific heat of aqueous solutions

1. Increases
2. Decreases
3. Remains unchanged
4. Either (A) or (B); depends on the type of solution

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