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Chemical Reaction Engineering

Chemical Reaction Engineering
For an ideal plug flow reactor, the value of Peclet number is

0
10
1
∞

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Chemical Reaction Engineering
For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.

8
16
32
12

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Chemical Reaction Engineering
During manufacture of H₂SO₄, the oxidation of SO₂ to SO₃ by oxygen is an en- dothermic reaction. The yield of SO₃ will be maximised, if the

Temperature is reduced and pressure is increased
Temperature is increased
Temperature is increased and pressure is reduced
Pressure is reduced

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Chemical Reaction Engineering
At a given temperature, K₁, K₂ and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH₄(g) + H₂O(g) ⇋ CO(g) + 3H₂(g), CO(g) + H₂O(g) ⇋ CO₂(g) + H₂(g) CH₄(g) + 2H₂O(g) ⇋ CO₂(g) + 4H₂(g) Then K₁, K₂ and K3 are related as:

K3 = (K₁.K₂)2
K3 = K₁.K₂
K3(K₁+K₂)/2
K3 = (K₁.K₂)0.5

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Chemical Reaction Engineering
When a catalyst increases the rate of chemical reaction, the rate constant

Decreases
Increases
Remains constant
Becomes infinite

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Chemical Reaction Engineering
Molecularity of an elementary reaction, P + Q → R + S is

1
2
4
3

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