List of top Questions asked in OJEE

Thiele modulus is not a function of initial concentration for which of the following order reactions

Two reactors with average residence times \( t_1 \) and \( t_2 \) are placed in series. Reactor 1 has zero dispersion and reactor 2 has infinite dispersion. The E curve of the system is given by

A pulse tracer is introduced in an ideal CSTR (with a mean residence time of \( t \)) at time = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be

A batch distillation operation is carried out to separate a feed containing 100 mol of a binary mixture of A and B. The mole fraction of A in the feed is 0.7. The distillation progresses until the mole fraction of A in the residue decreases to 0.6. The equilibrium curve in this composition range may be linearized to \( y = 0.7353x + 0.3088 \). Here, \( x \) and \( y \) are the mole fractions of the more volatile component A in the liquid and vapor phases. The number of moles of residue is

Which of the following promotes branch migration at higher rates than does Rec-A?

A first order reversible reaction A to B occurs in a batch reactor. The exponential decay of the concentration of A has the time constant

For a first order isothermal catalytic reaction A to B, occurring in an infinitely long cylindrical pore, the relationship between effectiveness factor \(\epsilon\) and thiele modulus \(\phi\), is

Site directed mutagenesis facilitated research on

Maximum energy per gram on oxidation is yielded from

Insulin receptor is an example of

Autophosphorylation is done on

Whenever the cell's ATP supply is depleted, which of the following enzyme’s activity is increased?

For the determination of fatty acid composition, transesterification is done in a warm aqueous solution of

Meristem culture helps in developing which of the following?

The first amino group entering into the urea cycle is

One of the following nucleic acids has a left handed helix:

Which of the following statements is true about two-dimensional electrophoresis?

....... should enter the cell in the case of activation of reporter gene for two hybrid system.

If a plasmid is having two antibiotic resistant genes, say ampicillin resistant and chloramphenicol resistant. If the plasmid grows in ampicillin containing medium but not in chloramphenicol, what can be concluded?

In higher plants, the light harvesting molecules are:

Most accurate method to determine the molecular weight of a given polypeptide is:

Which of the following activity is not present in Taq polymerase?

The synthesis of proteins requires 20 standard amino acids in the living systems. However, some organisms use selenocysteine as an additional amino acid for synthesizing proteins. Selenocysteine is biosynthesized from:

Which of the following components bind to the solid column made of silica, under high salt concentration?

The process of formation of nitrate from ammonia is known as: