List of top Chemistry Questions

What is the hybridization of \([ {CrF}_6 ]^{3-}\)?

Calculate final volume of a gas when pressure of 60 mL gas is increased from 1 to 1.5 atm, keeping temperature constant

40% of HI undergoes decomposition to H2 and I2 at 300 K. ΔG° for this decomposition reaction at one atmosphere pressure is _____ J mol–1. [nearest integer]
(Use R = 8.31 J K–1 mol–1; log 2 = 0.3010, ln 10 = 2.3, log 3 = 0.477)
Water sample is reported to be highly polluted if BOD (Biological Oxygen Demand) value of sample becomes:
Write the mathematical equation for the first law of thermodynamics for Isothermal process, Adiabatic process. Derive the relationship between pH and pOH.
In the 1'H NMR spectrum of ethanol at 400 MHz, the methyl group splits into ___number of peaks.
Assuming the molecule shown below is aromatic, the value of "s" according to "Hückel's rule" is
an aromatic molecule
A double stranded DNA molecule of total 5000 base pairs long, has a melting temperature of 85 °C. What will be the % AT base pairs in this sample? (up to one decimal place).
Amongst the molecules given below, the total number of molecules that have at least one sp² hybridized atom is___.
\(C_6H_6, NO_2, BF_3, H_2O_2,SO_2,C_2H_2, L\) -Tryptophan
Major product formed in the given reaction is
Reaction
The stationary phase of cation-exchange chromatography can be
Components of a Transmission Electron Microscope are
The correct statement/s for bimolecular nucleophilic substitution reactions is/are
Boric acid is polymeric due to:
Among the following, the species having the smallest bond order is:
Which of the following has correct increasing basic strength?
The order of increasing sizes of atomic radii among the elements O, S, Se, and As is:
The correct order of thermal stability of hydroxides is:
Which of the following order is not correct for the ionic radii of the given species: \( {O}^{2-} \), \( {S}^{2-} \), \( {N}^{3-} \), \( {P}^{3-} \)?

The partial pressure of \( CH_3OH(g) \), \( CO(g) \), and \( H_2(g) \) in an equilibrium mixture for the reaction:

\[ CO(g) + 2H_2(g) \rightleftharpoons CH_3OH(g) \]

are 2.0, 1.0, and 0.1 atm respectively at \( 427^\circ C \). The value of \( K_p \) for the decomposition of \( CH_3OH \) to \( CO \) and \( H_2 \) is:

A catalyst is a substance which:
Which of the following is a non-reducing sugar?

The IUPAC name of the following compound is:

Which of the following is not present in a nucleotide?
Heroin is a derivative of: