Question: From among the following, choose one which is not an exothermic process ?

• 1. Methanol synthesis
• 2. Catalytic cracking
• 3. Ammonia synthesis
• 4. Oxidation of sulphur

Question: If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is________________?

• 1. 1
• 2. 2
• 3. 3
• 4. 4

Question: A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of

• 1. Inner catalyst core of radius R/8 does not participate in reaction
• 2. Inner catalyst core of radius R/2 does not participate in reaction
• 3. Inner catalyst core of radius 7R/8 does not participate in reaction
• 4. Effectiveness factor for a zero order reaction cannot be 7/8 as it must always be 1

Question: There is no correspondence between stoichiometric and the rate equation in case of a/an _____________ reaction?

• 1. Elementary
• 2. Multiple
• 3. Autocatalytic
• 4. Non-elementary

Question: Pick out the correct statement?

• 1. Reactions with high activation energies are very temperature sensitive
• 2. Chemical equilibrium is a static state
• 3. A photochemical reaction is catalysed by light
• 4. A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction

Question: Pick out the wrong statement?

• 1. The integral method of analysing kinetic data is used when the data is scattered
• 2. The differential method of analysing kinetic data requires more accurate or larger amounts of data
• 3. When the reaction rate is independent of temperature, the reaction is said to be of zero order
• 4. The ratio of volumes of plug flow reactor to that of mixed reactor is always less than one for identical feed composition, flow rate, conversion and for all positive reaction orders

Question: Pick out the wrong statement ?

• 1. In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time
• 2. In a semi-batch reactor, one reactant is charged batch wise, while the other reactant is fed continuously
• 3. In a continuous flow reactor, uniform concentration cannot be maintained throughout the vessel even in a well agitated system
• 4. In a continuous flow reactor, both the reactants and the products flow out continuously

Question: Pick out the wrong statement?

• 1. Exit age description function E. and internal age distribution function (I) are related as, E = -(dI/dθ)
• 2. Chemisorption studies are useful in the determination of catalyst surface area and pore size distribution
• 3. A higher temperature favours the reaction of higher activation energy
• 4. A catalyst increases the potential energy barrier over which the reactants must pass to form products

Question: Pick out the correct statement?

• 1. In catalytic reactions, the catalyst reacts with the reactants
• 2. A catalyst initiates a chemical reaction
• 3. A catalyst lowers the activation energy of the reacting molecules
• 4. A catalyst cannot be recovered chemically unchanged at the end of the chemical reaction

Question: Pick out the wrong statement ?

• 1. A catalyst does not alter the final position of equilibrium in a reversible reaction
• 2. A catalyst initiates a reaction
• 3. A catalyst is specific in reaction
• 4. A catalyst remains unchanged in chemical composition at the end the reaction