List of top Chemistry Questions

Names of some compounds are given. Which one is not correct in IUPAC system ?

The major organic product formed from the following reaction:

Which one of the following forms micelles in aqueous solution above certain concentration?

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

For the reaction $N_{2(s)}+O_{2(s)} \rightleftharpoons 2 N O_{(g)}$, the value of $K_{c}$ at $800^{\circ} C$ is $0.1 .$ When the equilibrium concentrations of both the reactants is $0.5 \,mol$, what is the value of $K_{P}$ at the same temperature?

A commercial sample of hydrogen peroxide is labelled as 10 volume. Its percentage strength is nearly

A precipitate of $AgCl$ is formed when equal volumes of the following are mixed. $[K_S\, for\, AgCl = 10^{-10}]$

Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (At. no. of Zn = 30, Cr = 24, Co = 27, Ni = 28)

The main reason for larger number of oxidation states exhibited by the actinides than the corresponding lanthanides, is :

The aqueous solution containing which one of the following ions will be colourless?(Atomic no: Sc=21, Fe=26, Ti=22, Mn=25)

Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?

Which one of the following oxides is expected to exhibit paramagnetic behaviour ?

Which of the following is the electron deficient molecule?

The rate of reaction between two reactants A and B decreases by a factor of 4,if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is:

The decreasing order of nucleophilicity among the nucleophiles : (A)$CH_{3}\underset{\underset{O}{||}}{C}-O^-$ (B)$CH_3O^-$ (C) $CN^-$

The standard electrode potential is measured by

$ H_2S $ gas when passed through a solution of cations containing $HCl$ precipitates the cations of second group in qualitative analysis but not those belonging to the fourth group. It is because

Gold is extracted by hydrometallurgical process, based on its property

Which of the particles cannot be accelerated?

In blast furnace iron oxide is reduced by

The rate at which a substance reacts depends on its

The correct order in which the O—O bond length increases in the following is:

Which of the following molecules has trigonal planar geometry?

The correct sequence of increasing covalent character is represented by