List of top Chemistry Questions

Identity the incorrect pair from the following:

Which of the following can not act as an oxidising agent?

The incorrect statement regarding conformations of ethane is:

The quantity which changes with temperature:

Which structure of protein remains intact after coagulation of egg white on boiling?

Identify B formed in the reaction.
\[ \text{Cl} - \text{(CH}_2\text{)}_4 - \text{Cl} \xrightarrow{\text{excess NH}_3} A \xrightarrow{\text{NaOH}} B + \text{H}_2\text{O} + \text{NaCl} \]

Identify the following species in which \(d^2sp^3\) hybridization is shown by the central atom.

Given below are two statements:
Statement (I) : Oxygen being the first member of group 16 exhibits only –2 oxidation state.
Statement (II) : Down the group 16 stability of +4 oxidation state decreases and +6 oxidation state increases.
In the light of the above statements, choose the most appropriate answer from the options given below:

Bond line formula of HOCH(CN)$_2$ is:

Products for the below reaction are:

The final product A, formed in the following reaction sequence is:

The technique used for purification of steam volatile water immiscible substance is:

The molecular formula of second homologue in the homologous series of monocarboxylic acid is

Phenolic group can be identified by a positive

Choose the correct option having all the elements with \( d^{10} \) electronic configuration from the following:

Given below are two statements:
Statement (I) : In the Lanthanoids, the formation of Ce⁺⁴ is favoured by its noble gas configuration.
Statement (II) : Ce⁺⁴ is a strong oxidant reverting to the common +3 state.
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following statements is not correct about rusting of iron?

Which among the following halide/s will not show S$_N$1 reaction:

Choose the most appropriate answer from the options given below:

The order of relative stability of the contributing structure is:

Choose the correct answer from the options given below:

The number of electrons present in all the completely filled subshells having n=4 and s=+½​ is _____. (Where n = principal quantum number and s = spin quantum number).

From the given list, the number of compounds with +4 oxidation state of Sulphur_____.
\(SO_3​, H_2​SO_3​, SOCl_2​, SF_4​, BaSO_4​, H_2​S_2​O_7\)​.

In which of the following compound central atom has +4 oxidation state?

Sum of bond order of CO and NO⁺ is _____.

3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for 'A' is ______.

Mass of methane required to produce 22 g of CO₂​ after complete combustion is ______ g.
(Given Molar mass in g mol⁻¹: C=12.0, H=1.0, O=16.0).