Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in ___________________?

Related Mcqs:

B.E.T. method can be used to determine the ___________________ of a porous catalyst?

A. Solid density B. Pore volume C. Surface area D. All A., B. and C....

‘n’ number of plug flow reactors (P.F.R) in series with a total volume ‘V’ gives the same conversion as one P.F.R. of volume________________?

A. V/n B. V C. V.n D. 1/V...

A stirred tank reactor compared to tubular-flow reactor provides____________________?

A. More uniform operating conditions B. Permits operation at the optimum temperature for a long reaction time C. Higher overall selectivity for a first order consecutive reaction D. All A., B. and C....

A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is ___________________?

A. 0.33 B. 0.5 C. 1 D. Data insufficient, can’t be predicted...

A space velocity of 5 hr-1 means that ___________________?

A. Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour B. After every 5 hours, reactor is being filled with the feed C. Cent per cent conversion can be achieved in at least 5 hours D. A fixed conversion of a given batch of feed takes 5 hours...