List of top Chemistry Questions

Find the order of field strength
\( \text{CN}^- \), \( \text{SCN}^- \), \( \text{NCS}^- \), \( \text{S}^{2-} \), \( \text{OH}^- \)

For a weak base of concentration \(C\) and degree of dissociation \(\alpha\), what is the correct relation between \(K_b\) and \(C\)?

Which one of the following conditions will favour maximum formation of the product in the reaction, \( A_{2}(g) + B_{2}(g) \rightleftharpoons X_{2}(g) \), \( \Delta_r H = -x \,\text{kJ} \):

Among the following species, identify the pair having same bond order \( CN^{-} \), \( O_{2}^{-} \), \( NO^{+} \), \( CN^{+} \):

A neutral molecule \(XF_{3}\) has a zero dipole moment. The element X is most likely:

Which one of the following is not an allylic halide?

Oxidation number of potassium in \( K_{2}O \), \( K_{2}O_{2} \) and \( KO_{2} \), respectively, is:

What are the monomers of Buna-S?

Calculate the pH of a \(0.001\,\text{M}\) solution of \(HNO_3\).

What color is produced when Phenol reacts with neutral Ferric Chloride?

What is the oxidation state of Phosphorus in \(H_3PO_4\)?

Arrange carbocations in increasing order of stability.

What is the Van’t Hoff factor (\(i\)) for a completely dissociated solution of \(K_2SO_4\) in water?

What is the product obtained at the cathode during the electrolysis of molten NaCl?

Which reagent is typically used in Rosenmund reduction to convert acyl chlorides to aldehydes?

What are the monomers of Bakelite?

The pairs among $A = [SO_3^{2-}, CO_3^{2-}]$, $B = [O_2^-, F_2]$, $C = [CN^-, CO]$, $D = [NH_3, H_3O^+]$ and $E = [MnO_4^-, CrO_4^{2-}]$ that do not have similar Lewis dot structure are

What is the stability order of carbocations?

In \( PO_4^{3-} \), the formal charge on each oxygen atom and the P - O bond order respectively are

The Bohr orbit radius for the hydrogen atom (n = 1) is approximately 0.530 \AA. The radius for the first excited state (n = 2) orbit is (in \AA)

For the reaction CO(g) + \(\frac{1}{2}\) O\(_2\)(g) \(\rightarrow\) CO\(_2\)(g) Which one of the statement is correct at constant T and P?

Chloride ion and potassium ion are isoelectronic. Then

The screening effect of d-electrons is

What is the Van't Hoff factor (\(i\)) for a non-electrolyte?

What is the product of the reaction between Phenol and concentrated \(HNO_3\)?