17601. Which of the following is not present in bagasse fibre ?
17602. Nitric acid is not used in the manufacture of
17603. Naphthols are derivates of
17604. Fermentation is adversely affected by the
17605. Extraction of __________ employs an electrolytic process.
17606. Dechlorination of treated water is necessary to
17607. Fire clay is __________ refractory material.
17608. An oil is converted into fat by its
17609. Production of one ton of cement requires about __________ tons of limestone.
17610. Low temperature carbonisation of coal takes place at __________ °C.
17611. Shaving soaps are
17612. Oxidation of SO2 to SO3 is favoured by
17613. Gun powder, which is an explosive comprises of charcoal, sulphur and
17614. Starting raw material for the manufacture of alum is
17615. Salt cake is chemically represented by
17616. Which of the following sugars is the sweetest?
17617. What is the order of a chemical reaction, , if the rate of formation of 'C', increases by a factor of 2.82 on doubling the concentration of 'A' and increases by a factor of 9 on trebling the concentration of 'B'?
17618. For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.
17619. 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.
17620. The single parameter model proposed for describing non-ideal flow is the __________ model.
17621. A first order reaction requires two equal sized CSTR. The conversion is
17622. In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.
17623. The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is
17624. Pick out the wrong statement pertaining to space velocity of flow reactors.
17625. A reactor is generally termed as an autoclave, when it is a
17626. 6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ?
17627. The rate constant of a chemical reaction decreases by decreasing the
17628. Reaction rate equation for the reaction, . If S at is present in large excess, what is the order of this reaction?
17629. Rate of a gaseous phase reaction is given by, . The unit of rate constant is
17630. __________ is the response curve for a step input signal from a reactor.
17631. 'If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the
17632. Which of the following is the most suitable for very high pressure gas phase reaction ?
17633. The reaction between oxygen and organic material is a/an __________ reaction.
17634. With decrease in temperature, the equilibrium conversion of a reversible endother-mic reaction
17635. In an exothermic chemical reaction, the reactants compared to the products have
17636. For a reaction of the type, , the rate of reaction (- rx) is given by
17637. In a consecutive reaction system when E1 is much greater than E2, the yield of B increases with the
17638. A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length
17639. The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is
17640. A batch reactor is suitable for
17641. For a heterogeneous catalytic reaction
17642. The increase in the rate of reaction with temperature is due to
17643. A catalyst loses its activity due to
17644. 'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.
17645. Specific rate constant for a second order reaction
17646. For the irreversible elementary reactions in parallel viz , the rate of disappearance of 'X' is equal to
17647. For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction.
17648. For a zero order chemical reaction, the
17649. BET apparatus
17650. Radioactive decay follows __________ order kinetics.