List of top Chemistry Questions

According to the Heisenberg's Uncertainty principle, the value of \(\Delta v \cdot \Delta x\) for an object whose mass is \(10^{-6}\) kg is
Given below are two statements.
The equilibrium constant at 298 K for the reaction \( A + B \rightleftharpoons C + D \) is 100. If the initial concentrations of all the four species were 1 M each, then equilibrium concentration of D (in mol/L) will be
Which one of the following reactions has
\(\Delta H = \Delta U\)?
Which of the following reaction/s does not yield an amine?
Which of the following has the most acidic Hydrogen?
The number of orbitals associated with 'N' shell of an atom is
Which of the following reagents are suitable to differentiate Aniline and N-methylaniline chemically?
Arrange the following compounds in their decreasing order of reactivity towards nucleophilic addition reaction.
Statement-I: Reduction of ester by DIBAL-H followed by hydrolysis gives aldehyde.
Statement-II: Oxidation of benzyl alcohol with aqueous KMnO₄ leads to the formation of benzaldehyde.
Among the above statements, identify the correct statement.
Ethyl alcohol is heated with concentrated sulphuric acid at 413 K (140°C). The major product formed is
Oxidation of Toluene with chromyl chloride followed by hydrolysis gives Benzaldehyde. This reaction is known as
Phenol can be distinguished from propanol by using the reagent
In the preparation of sodium fusion extract, the purpose of fusing organic compound with a piece of sodium metal is to
The IUPAC name of the given organic compound is HC \( \equiv \) C - CH = CH - CH\(_2\).
The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so, it
In the titration of potassium permanganate (KMnO\(_4\)) against Ferrous ammonium sulphate (FAS) solution, dilute sulphuric acid but not nitric acid is used to maintain acidic medium, because
The group reagent NH\(_4\)Cl (s) and aqueous NH\(_3\), will precipitate which of the following ion
The correct sequence of \(\alpha\)-amino acid, hormone, vitamin, carbohydrates respectively is
Which of the following statements are true about \( [NiCl_4]^{2-} \)?
(a) The complex has tetrahedral geometry.
(b) Co-ordination number of Ni is 2 and oxidation state is +4.
(c) The complex is sp\(^3\) hybridised.
(d) It is a high spin complex.
(e) The complex is paramagnetic.
A ligand which has two different donor atoms and either of the two ligates with the central metal atom/ion in the complex is called
Which formula and its name combination is incorrect?
A member of the Lanthanoid series which is well known to exhibit +4 oxidation state is
In the reaction between hydrogen sulphide and acidified permanganate solution,
What is the molarity of a solution prepared by dissolving 5.85 g of NaCl in water to make 250 mL of solution? (Molar mass of NaCl = \( 58.5 \, \text{g/mol} \)).