Stoichiometry MCQ Questions & Answers

91

Pick out the wrong unit conversion.

A) 1 kgf = 9.8 Newton B) 1 stoke = 1 m²/second C) 1 Pascal second = 10 poise D) 1 ppm = 1 ml/m³ = 1 mg/kg

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Answer & Solution

Answer: Option B

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92

Pick out the wrong unit conversion.

A) 1 Joule = 4.186 calorie B) 1 kcal = 3.968 BTU = 0.00116 kWh = 0.00156 hp C) 1 ton of TNT (tri-nitro-toluene) = 4.2 GJ (1G = 10⁹) D) 1 ft.lbf = 0.3238 calorie = 0.1383 kg.m = 1.356 J = 1.356 N.m

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Answer & Solution

Answer: Option A

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93

pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be

A) 0 B) 10 C) 7 D) 14

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Answer & Solution

Answer: Option C

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94

No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules

A) Collide without loss of energy B) Do work equal to loss in kinetic energy C) Are above the inversion temperature D) Exert no attractive force on each other

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Answer & Solution

Answer: Option C

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95

In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality?

A) Use of equation of state B) Fugacity co-efficient C) Activity co-efficient D) None of these

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Answer & Solution

Answer: Option C

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96

Pick out the wrong statement:

A) A vapor is termed as a saturated vapor, if its partial pressure equals its equilibrium vapor pressure B) A vapor whose partial pressure is less than its equilibrium vapor pressure, is termed as a 'superheated vapor' C) The temperature at which a vapor is saturated is termed as the boiling point D) The difference between the existing temperature of a vapor and its saturation temperature (i.e. dew point) is called its 'degree of superheat'

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Answer & Solution

Answer: Option C

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97

Which of the following ideal gas laws are not applicable to mixture of gases ?

A) Amgat's law B) Dalton's law C) Boyle's law & Charle's Law D) None of these

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Answer & Solution

Answer: Option C

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98

Atmospheric pressure corresponds to a hydrostatic head of

A) 13.6 cms of Hg B) 34 ft of H₂O C) 1 metre of H₂O D) 13.6 metres of Hg

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Answer & Solution

Answer: Option B

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99

Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches

A) ∞ B) 0 C) 1 D) 0.24

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Answer & Solution

Answer: Option C

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100

In __________ process, ions of salts react with water to produce acidity or alkalinity.

A) Hydration B) Hydrolysis C) Electrolysis D) Dialysis

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Answer & Solution

Answer: Option B

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Stoichiometry MCQ Questions & Answers | Chemical Engineering