List of practice Questions

Which of the following statements about endogenous synthesis of insulin are correct? \[ P. \text{Insulin is synthesized as preproinsulin.} \quad Q. \text{Preproinsulin is converted to proinsulin.} \quad R. \text{Single-site cleavage of proinsulin eliminates C chain.} \quad S. \text{Mature insulin consists of disulfide-linked A and B chains.} \]
Which one of the following enzymes converts testosterone to estradiol?
Purification of 6×His-tagged protein using Ni-NTA column is an example of
Which of the following carbohydrates has/have a \( \beta 1 \to 4 \) glycosidic linkage?
Which of the immune cells listed below are agranular?
P. Eosinophils
Q. Mast cells
R. Monocytes
S. T-cells
Which one of the following enzymes is located in the outer mitochondrial membrane?
Which one of the following statements about the DNA polymerase III of E. coli is NOT correct?
Which one of the following compounds is NOT a translation inhibitor?
A dye was allowed to undergo migration on a chromatographic paper using a solvent. The dye, and the solvent-front migrated 5 and 20 cm, respectively, from the point of origin. The retention factor (rounded off to two places decimal) for the dye is ________.
The \( pK_a \) values of the carboxylic and amino groups of an amino acid with a non-ionizable side chain are 2.17 and 9.13, respectively. The isoelectric point (rounded off to two places decimals) of this amino acid is ________.
Consider the following reaction:
The CORRECT statement(s) related to mono-chlorination at carbon-2 position is/are
Consider the following enzyme catalyzed reaction:
where \( E \) is enzyme, \( S \) is substrate, \( ES \) is enzyme-substrate complex, and \( P \) is product. The CORRECT statement(s) for the above reaction is/are
Consider the following reaction:
The CORRECT pathway(s) involved in the reaction is/are
An aqueous solution of aspirin (HA) is prepared at pH 7.4. The ratio of concentration of \( \text{A}^- \) and \( \text{HA} \) at equilibrium is ________. (round off to the nearest integer).
The total number of 3-centre-2-electron bonds in \( B_4H_{10} \) is ________. (in integer).
The equilibrium constant for isomerization of 1-butene to trans-2-butene at 27°C is ________ (round off to one decimal place).
A 16 mW monochromatic light emits \( 4 \times 10^{16} \) photons in 1 second. When this light incident on a metal strip, photoelectrons are emitted. The wavelength of the emitted photoelectrons (in Å) is ________ (round off to one decimal place).
The bases present in DNA are
The CORRECT order of basicity for the following compounds is
A sample of benzene, contaminated with a non-volatile and non-ionic solute, boils at 0.31°C higher than that of pure benzene. The molality of the solute in the contaminated solution is ________ (round off to two decimal places).
Among the following statements about cobalt complexes, which is/are CORRECT? Given: Atomic number of Co is 27
Consider a second order reaction, \( 2A \rightarrow \text{Product} \).
The concentration of A is represented as \( [A] \).
Which of the following is the CORRECT plot for determining the rate constant for the above reaction?
Which among the following has the least second ionization energy?
Which among the following metal ions has the highest enthalpy of hydration? (Assume the given metal ions have the same counter ion.) Given: Atomic numbers of Ti, V, Cr and Mn are 22, 23, 24 and 25, respectively.
Among the following, the one having smallest bond angle is