List of top Chemistry Questions

Identify product ' $B$ ' in the following sequence of reaction.
$\text{Aniline} \xrightarrow[273 \text{ K}]{\text{NaNO}_2 + \text{HCl}} \text{A} \xrightarrow{\Delta}{\text{H}_2\text{O}} \text{B} + \text{N}_2 \uparrow$
Which of the following ion exhibits maximum power of coagulation for positively charged Sol ?
Which among the following is NOT Allylic halide?
Identify a monomer used in preparation of neoprene.
Which of the following halogen forms maximum number of oxoacids?
Calculate the change in internal energy of the system if 20 kJ work is done on the system and it releases 10 kJ heat in a particular reaction.
Identify neutral ligand from following?
Which from following is used as catalyst in Fisher Tropsch process for the synthesis of gasoline?
Which of the following is correct IUPAC name of catechol?
Which among the following statements is true for haloalkyne?
The pH of a solution is 3. What is the concentration of hydrogen ions in this solution?
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?
\(CH_3 - CH_2 - CH(CH_3) - CH(CH_3) - ONa + C_2H_5Br \rightarrow\)
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 compound has the highest boiling point?
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) \(C_{6}H_{5}CH_{2}Br\)
Which of the following acid is highly acidic?
Bromoethane on treatment with sodium metal in dry ethereal solution gives
The IUPAC name of the compound \(HOCH_2(CH_2)_3CH_2COCH_3\) is
The IUPAC name of \([Co(en)_3]_2(SO_4)_3\) is
Which of the following is an electron donating group?
Which of the following pair of actinoids exhibit maximum oxidation state of \(+7?\)