List of top Chemistry Questions

Why does the +3 and +4 oxidation state of Cerium (Ce) remain stable?
Is oxidation of bromide ion into bromine by ferric ion possible?
Explain velocity (rate) constant of a reaction.
Explain co-ordination number by giving an example.
Four alternatives are given in each part of this question. Choose the correct alternative and write it in your answer-book. Number of moles in 180 g of water is:
Write general electronic configuration of d-block and f-block elements.
Write chemical equations for the reaction of (x) ethanamine with HCl and (y) aniline with \( NaNO_2 \) and dilute HCl at \( 0^\circ C \).
Write a short note on Rosenmund reduction. Write only the chemical equation of the reaction of ethyne with water in presence of \( H_2SO_4 \) and \( HgSO_4 \).
What are amines? Write one differentiating test for primary, secondary, and tertiary amines.
State important applications of phenol.
State the difference between molecularity of a reaction and order of a reaction. Write the velocity equation for the reaction \( H_2(g) + Cl_2(g) \rightarrow 2HCl(g) \), which is a zero-order reaction.
State the role of hormones in our body.
Define specific resistance and conductance of a cell.
46 g ethanol is dissolved in 54 g water. Calculate mole fraction of ethanol and water.
Write ions produced in an aqueous solution of \( K_4[Fe(CN)_6] \). What is the oxidation number of \( Fe \) in this compound?
Write the difference between Galvanic cell and Electrolytic cell.
Calculate the normality of a solution prepared by dissolving 325 g of anhydrous sodium carbonate (\( Na_2CO_3 \)) in 250 mL of water. Equivalent weight of \( Na_2CO_3 \) is 5
Explain the effect of temperature and concentration on the velocity of a reaction.
Electrode potential of standard hydrogen electrode is:
The configuration showing maximum oxidation state is:
The true statement for the formula \( K = Ae^{-E_a / RT} \) is:
Cyclohexane into Adipic Acid
Ethanentrile into Ethanal
\([Ni(CN)_4]^{2-}\)
\([NiCl_4]^{2-}\)