List of top Chemistry Questions asked in GATE XL

The CORRECT order of acidity of the following compounds is
The CORRECT order of acidity of the following compounds is
Which one of the following is the CORRECT representation of the variation of the Gibbs free energy (G) of a substance with temperature (T) at constant pressure?
Among the following, the structure representing histidine is
Which one or more of the following statements is/are correct regarding the transport and retention of proteins in different cell organelles?
Which one of the following is the correct match between the molecular properties listed in Column I and the corresponding biochemical separation methods in Column II?I.
Column IColumn II 
P. Solubilityi. Reverse phase chromatography
Q. Ionic chargeii. Ultracentrifugation
R. Polarityiii. Salting out
S. Molecular size iv. Isoelectric focusing
  v. Gel electrophoresis
In a lactic acid solution at pH 4.8, the concentrations of lactic acid and lactate are 0.01 M and 0.087 M, respectively. The calculated pKa of lactic acid is____ (Round off to one decimal place)
A newly identified viral protein contains one long a-helix spanning 60 amino acid residues. The number of main chain H-bonds formed in this helix is____ (Answer in integer)
The molecule(s) with non-zero dipole moment is/are
The paramagnetic species among the following is/are (Given: Atomic numbers of Cr = 24; Fe = 26; Ni = 28):
The ionic product of water at 40 °C is \( 2.92 \times 10^{-14} \, \text{M}^2 \). The pH of water at 40 °C is __________ (rounded off to 2 decimal places).
Given the standard reduction potentials (\( E^\Theta \)) for the half-cell reactions below, the standard Gibbs free energy of the dissolution of silver chloride in water, at 298 K, is __________ J mol\(^{-1}\) (rounded off to nearest integer).
(Given: Faraday constant, \( F = 96500 \, \text{C mol}^{-1} \); \( J = \text{C} \times \text{V} \))
\[\text{AgCl}(s) + e^{-} \rightarrow \text{Ag}(s) + \text{Cl}^{-}(\text{aq}); \quad E^\Theta = 0.22 \, \text{V at 298 K}\]
\[\text{Ag}^{+}(\text{aq}) + e^{-} \rightarrow \text{Ag}(s); \quad E^\Theta = 0.80 \, \text{V at 298 K}\]
Which one of the following pairs of amino acids is NOT incorporated in a polypeptide chain?
The maximum number of electrons that can be accommodated in the shell with n = 2 is______ (in integer). (Given: n = principal quantum number)
The initial rate of a reaction triples when the concentration of a reactant, A, is doubled. The order of the reaction with respect to A is _______(rounded off to 2 decimal places).
One mole of an ideal gas expands isothermally and reversibly to double its volume. If the expansion work done by the system is 1728.85 J, the temperature of the system is ____ K (rounded off to 2 decimal places).
Given:
Gas constant, \( R = 8.314 \) J·K\(^{-1}\)·mol\(^{-1}\)
Each of the following alkenes undergoes addition reaction with bromine. Under the reaction conditions, the CORRECT trend in the reaction rates is
The CORRECT order of electronegativity is
The CORRECT option(s) of Y for the following reaction is/are
The CORRECT option(s) of Y for the following reaction is/are
Which one of the following is the CORRECT representation of the variation of the Gibbs free energy (G) of a substance with temperature (T) at constant pressure?
Among the following, the structure representing histidine is
The molecules A and B are a pair of___
The molecules A and B are a pair of