List of top Chemistry Questions

Which of the following halogen forms maximum number of oxoacids?
Identify neutral ligand from following?
Which from following is used as catalyst in Fisher Tropsch process for the synthesis of gasoline?
Which among the following statements is true for haloalkyne?
Which of the following is correct IUPAC name of catechol?
The pH of a solution is 3. What is the concentration of hydrogen ions in this solution?
Consider the following
Assertion (A): phosphorus can form both phosphorus (III) and phosphorus (V) chlorides but nitrogen cannot form nitrogen(V) chloride.
Reason (R): The electronegativity of nitrogen is more than that of phosphorus
The correct answer is
The magnetic moment of \( \text{Mn}^{3+} \) is:
0.3 g of acetic acid (Molar mass = 60 g mol\(^{-1}\)) dissolved in 30 g of benzene shows a depression in freezing point equal to 0.45°C. Calculate the percentage association of acid if it forms a dimer in the solution.
(Given: \( K_f \) for benzene = 5.12 K kg mol\(^{-1}\))
The rate constant for the hydrolysis of sucrose by an enzyme at $300\,K$ is $k_1$ and at $320\,K$ is $1.25k_1$. The activation energy is (in kJ mol$^{-1}$):
Which of the following is Hinsberg's reagent?
The major product obtained in the dehydration of ethanol in the presence of \(H_{2}SO_{4}\) at 413 K is
Which of the following acid is highly acidic?
Which of the following compound has the highest boiling point?
\(CH_3 - CH_2 - CH(CH_3) - CH(CH_3) - ONa + C_2H_5Br \rightarrow\)
The order of reactivity of the following compounds towards SN2 displacement reaction is (i) \(C_{6}H_{5}CH(CH_{3})Br\) (ii) \(C_{6}H_{5}CH(C_{6}H_{5})Br\) (iii) \(C_{6}H_{5}C(CH_{3})(C_{6}H_{5})Br\) (iv) \(C_{6}H_{5}CH_{2}Br\)
Bromoethane on treatment with sodium metal in dry ethereal solution gives
Which of the following pair of actinoids exhibit maximum oxidation state of \(+7?\)
The IUPAC name of \([Co(en)_3]_2(SO_4)_3\) is
Chromite ore is
Which of the following is an electron donating group?
The IUPAC name of the compound \(HOCH_2(CH_2)_3CH_2COCH_3\) is
Which of the following transition metal does not exhibit variable oxidation state?
In the Arrhenius equation, \(k = Ae^{- Ea / RT}\), which factor corresponds to the fraction of molecules that have kinetic energy greater than activation energy ?
What is the half life period of the first order reaction whose rate constant is \(2.31 \times 10^{- 1} \mathrm{~s}^{- 1}\)