Chemical Reaction Engineering The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are Mostly irreversible Always irreversible Highly temperature sensitive Insensitive to temperature changes Mostly irreversible Always irreversible Highly temperature sensitive Insensitive to temperature changes ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The value of 'n' for a chemical reaction A → B, whose reaction rate is → CAn, will be __________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled. 1 3 2 1 3 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot? CA0 Vs ln t1/2 Ln CA0 Vs t1/2 Ln CA0 Vs ln t1/2 CA0 Vs t1/2 CA0 Vs ln t1/2 Ln CA0 Vs t1/2 Ln CA0 Vs ln t1/2 CA0 Vs t1/2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.) Reduced time (vt/V) None of these Reactor dispersion number (D/vL) Thiele modulus (L√(k/D1) Reduced time (vt/V) None of these Reactor dispersion number (D/vL) Thiele modulus (L√(k/D1) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Reaction rate of a first order reaction, which is half completed in 23 minutes will be 0.05 min⁻¹ 0.03 hr⁻¹ 0.03 sec⁻¹ 0.03 min⁻¹ 0.05 min⁻¹ 0.03 hr⁻¹ 0.03 sec⁻¹ 0.03 min⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst is said to be a negative catalyst, ifit Reduces the value of equilibrium constant Does not initiate the reaction Retards the rate of reaction All of these Reduces the value of equilibrium constant Does not initiate the reaction Retards the rate of reaction All of these ANSWER DOWNLOAD EXAMIANS APP
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